LINKSYS WRT120N Wireless-N Home Router User Manual WRT120N User Guide

LINKSYS LLC Wireless-N Home Router WRT120N User Guide

Contents

Manual 1

USER GUIDEWireless-N Home RouterModel: WRT120N
 About This GuideiWireless-N Home RouterAbout This GuideIcon DescriptionsWhile  reading  through  the  User  Guide  you  may  see various icons that call attention to specific items. Below is a description of these icons:NOTE: This  check  mark  indicates  that there  is a  note  of  interest  and  is  something  that  you should pay special attention to while using the product. WARNING:  This  exclamation  point  indicates that  there  is  a  caution  or  warning  and  it  is something that could damage your property or product.WEB:  This  globe  icon  indicates  a  noteworthy website address or e-mail address.Online ResourcesWebsite  addresses  in  this  document  are  listed  without http:// in front of the address because most current web browsers do not require it. If you use an older web browser, you may have to add http:// in front of the web address.Resource WebsiteLinksys www.linksysbycisco.comLinksys International  www.linksysbycisco.com/internationalGlossary www.linksysbycisco.com/glossaryNetwork Security www.linksysbycisco.com/securityCopyright and TrademarksLinksys,  Cisco  and  the  Cisco  Logo  are registered  trademarks  or  trademarks  of Cisco  Systems,  Inc.  and/or  its  affiliates  in the U.S. and certain other countries. Other brands and product names are trademarks or registered trademarks of their respective holders. Copyright © 2009 Cisco Systems, Inc. All rights reserved.
 Table of ContentsiiWireless-N Home RouterChapter 1: Product Overview  1Front Panel.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  1Back Panel .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  1Chapter 2: Wireless Security Checklist  3General Network Security Guidelines .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  3Additional Security Tips   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  3Chapter 3: Advanced Conguration  4Setup > Basic Setup .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  4Setup > DDNS.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  8Setup > MAC Address Clone.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  9Setup > Advanced Routing  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  9Wireless > Basic Wireless Settings  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .10Wireless > Wireless Security .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .12Wireless > Wireless MAC Filter.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .14Wireless > Advanced Wireless Settings .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .15Security > Firewall .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .16Security > VPN Passthrough .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .17Access Restrictions > Internet Access .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .17Applications and Gaming > Single Port Forwarding.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .19Applications and Gaming > Port Range Forwarding   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .19Applications & Gaming > Port Range Triggering .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .20Applications and Gaming > DMZ   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .20Applications and Gaming > QoS .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .21Administration > Management.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .23Administration > Log .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .24Administration > Diagnostics .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .24Administration > Factory Defaults .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .25Administration > Firmware Upgrade  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .25Status > Router .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .26Status > Local Network .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .26Status > Wireless Network .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .27Appendix A: Troubleshooting  28Appendix B: Specications  29Appendix C: Warranty Information  30Limited Warranty.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .30
 Table of ContentsiiiWireless-N Home RouterAppendix D: Regulatory Information  32FCC Statement  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .32FCC Radiation Exposure Statement  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .32Safety Notices.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .32Industry Canada Statement .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .32Avis d’Industrie Canada.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .33Wireless Disclaimer  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .33Avis de non-responsabilité concernant les appareils sans fil   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .33User Information for Consumer Products Covered by EU Directive 2002/96/EC on Waste Electric and Electronic Equipment (WEEE) .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .34Appendix E: Software End User License Agreement  38Cisco Products  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .38Software Licenses  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .38
Chapter 1 Product Overview1Wireless-N Home RouterChapter 1:  Product OverviewThank you  for  choosing the  Linksys by  Cisco Wireless-N Home Router. The Router lets you access the Internet via a wireless connection or through one of its four switched ports.  You  can  also  use  the  Router  to  share  resources such as computers, printers and files. A variety of security features  help  to  protect  your  data  and  your  privacy while  you  are  online.  Security  features  include  WPA2 security,  a  Stateful  Packet  Inspection  (SPI)  firewall,  and NAT technology. Configuring the Router is easy using the provided browser–based utility.Front Panel1,  2,  3,  4  (Blue)  These  numbered  LEDs, corresponding with the numbered ports on the Router’s back panel, serve two purposes. If the LED is continuously lit, the Router is successfully connected  to  a  device  through  that  port.  A flashing  LED  indicates  network  activity  over that port. Wi-Fi  Protected  Setup  Button  If  you  have client  devices,  such  as  wireless  adapters,  that support  Wi-Fi  Protected  Setup,  then  you  can use  Wi-Fi  Protected  Setup  to  automatically configure  wireless  security  for  your  wireless network.To  use  Wi-Fi  Protected  Setup,  run  the  Setup Wizard, or refer to Wi-Fi Protected Setup, page 11.Wi-Fi  Protected  Setup  LED  (Blue/Amber)  The LED lights up blue when wireless security  is  enabled.  It  flashes  blue  for  two minutes  during  Wi-Fi  Protected  Setup.    The  LED  lights  up  amber  if  there  is  an  error during the Wi-Fi Protected Setup process. Make sure the client device supports Wi-Fi Protected Setup. Wait until the LED is off, and then try again.   The LED flashes when a Wi-Fi Protected Setup session  is  active.  The  Router  supports  one session at a time. Wait until the LED is solidly lit, or off before starting the next Wi-Fi Protected Setup session.Wireless  (Blue)  The  Wireless  LED  lights  up when the wireless feature is enabled. If the LED is  flashing,  the  Router  is  sending  or  receiving data over the network.Internet  (Blue)  The  Internet  LED  lights  up when there is a connection made through the Internet  port.  It  flashes  to  indicate  network activity over the Internet port. Power  (Blue)  The Power LED lights up and will stay on while the Router is powered on. When the  Router  goes  through  its  self-diagnostic mode during every boot-up, this LED will flash. When the diagnostic is complete, the LED will be solidly lit.Back PanelInternet  The  Internet  port  is  where  you  will connect your cable or DSL Internet connection. 4,  3,  2,  1  These  Ethernet  ports  (4,  3,  2,  1) connect the Router to computers on your wired network and other Ethernet network devices. Reset  The  Reset  button  is  located  on  the right  side  of  the  product  label. There  are  two ways to reset the Router to its factory defaults. Either  press  and  hold  the  Reset  button  for approximately  five  seconds,  or  restore  the defaults  from  the  Administration >  Factory Defaults  screen  of the  Router’s browser-based utility. Power  The Power port connects to the included power adapter.Horizontal PlacementThe Router has four rubber feet on its bottom panel. Place the Router on a level surface near an electrical outlet.
Chapter 1 Product Overview2Wireless-N Home RouterWall-Mounting PlacementThe  Router  has  two  wall-mount  slots  on  its  bottom panel.  The  distance  between  the  slots  is  152  mm  (6 inches). Two screws are needed to mount the Router.Suggested Mounting Hardware2.5-3.0 mm4-5 mm 1-1.5 mm †Note: Mounting hardware illustrations are not true to scale.NOTE:  Linksys is not  responsible  for  damages incurred by insecure wall-mounting hardware. Follow these instructions:1.  Determine where you want to mount the Router. Make sure  that  the  wall  you  use  is  smooth,  flat,  dry,  and sturdy. Also make sure the location is within reach of an electrical outlet.2.  Drill two holes into the wall. Make sure the holes are  152 mm (6 inches) apart.3.  Insert  a  screw  into  each  hole  and  leave  3  mm  (0.12 inches) of its head exposed.4.  Maneuver the Router so the wall-mount slots line up with the two screws.5.  Place the wall-mount slots over the screws and slide the Router  down until the  screws  fit snugly into  the wall-mount slots.152 mmWall-Mounting TemplatePrint this page at 100% size. Cut along the dotted line, and place on the wall to drill precise spacing.
Chapter 2 Wireless Security Checklist3Wireless-N Home RouterChapter 2:  Wireless Security ChecklistWireless  networks are convenient  and  easy to install, so homes with high-speed Internet access are adopting them at a rapid pace. Because wireless networking operates by sending  information  over  radio  waves,  it  can  be  more vulnerable to intruders than a traditional wired network. Like signals from your cellular or cordless phones, signals from your wireless network can also be intercepted. Since you cannot physically prevent someone from connecting to your wireless network, you need to take some additional steps to keep your network secure. 1.  Change the default wireless    network name or SSIDWireless  devices  have  a  default  wireless  network  name or  Service  Set  Identifier  (SSID)  set  by  the  factory.  This is  the  name  of  your  wireless  network,  and  can  be  up to  32  characters  in  length.  Linksys  wireless  products use  linksys  as  the  default  wireless  network  name.  You should change the wireless network name to something unique  to distinguish  your wireless  network from  other wireless networks that may exist around you, but do not use  personal  information  (such  as  your  Social  Security number)  because  this  information  may  be  available  for anyone to see when browsing for wireless networks. 2.  Change the default passwordFor wireless products such as access points and routers, you will be asked for a password when you want to change their settings. These devices have a default password set by  the  factory.  The  Linksys  default  password  is  admin. Hackers  know  these  defaults  and  may  try  to  use  them to access your wireless device and change your network settings. To thwart any unauthorized changes, customize the device’s password so it will be hard to guess.3.  Enable MAC address filteringLinksys routers give you the ability to enable Media Access Control  (MAC)  address  filtering.  The  MAC  address  is  a unique  series  of  numbers  and  letters  assigned  to  every networking  device. With  MAC  address filtering  enabled, wireless  network  access  is  provided  solely  for  wireless devices with specific MAC addresses. For example, you can specify the MAC address of each computer in your home so  that  only  those  computers  can  access  your  wireless network. 4.  Enable encryptionEncryption  protects  data  transmitted  over  a  wireless network. Wi-Fi Protected  Access (WPA/WPA2) and Wired Equivalent Privacy (WEP) offer different levels of security for wireless communication.A  network  encrypted  with  WPA/WPA2  is  more  secure than a network encrypted with WEP, because WPA/WPA2 uses dynamic key encryption. To protect the information as  it  passes  over  the  airwaves,  you  should  enable  the highest  level  of  encryption  supported  by  your  network equipment. WEP  is  an  older  encryption  standard  and  may  be  the only option available on some older devices that do not support WPA.General Network Security GuidelinesWireless  network  security  is  useless  if  the  underlying network is not secure.  •Password protect  all computers on  the network  and individually password protect sensitive files. •Change passwords on a regular basis. •Install  anti-virus  software  and  personal  firewall software. •Disable file sharing (peer-to-peer). Some applications may  open  file  sharing  without  your  consent  and/or knowledge.Additional Security Tips •Keep wireless routers, access points, or gateways away from exterior walls and windows. •Turn  wireless  routers,  access  points,  or  gateways off  when  they  are  not  being  used  (at  night,  during vacations). •Use strong passphrases that are at least eight characters in length. Combine letters and numbers to avoid using standard words that can be found in the dictionary. WEB: For more information on wireless security, visit www.linksysbycisco.com/security
Chapter 3 Advanced Configuration4Wireless-N Home RouterChapter 3:  Advanced ConfigurationAfter setting up the Router with the Setup Wizard (located on the CD-ROM), the Router will be ready for use. However, if  you  want  to  change  its  advanced  settings,  use  the Router’s browser-based utility. This chapter describes each web page of the utility and each page’s key functions. You can access the  utility via  a  web browser  on a computer connected to the Router.The  browser-based  utility  has  these  main  tabs:  Setup, Wireless,  Security,  Access  Restrictions,  Applications  & Gaming, Administration, and Status. Additional tabs will be available after you click one of the main tabs.NOTE:  When  first  installing  the  Router,  you should  use  the  Setup  Wizard  on  the  Setup CD-ROM.  If  you  want  to  configure  advanced settings,  use  this  chapter  to  learn  about  the browser-based utility.Access the Browser-Based UtilityTo  access  the  browser-based  utility,  launch  the  web browser on your computer, and enter the Router’s default IP address, 192.168.1.1, in  the Address  field. Then press Enter.A  login  screen  will  appear.  (Non-Windows  XP  users  will see  a  similar  screen.)  Leave  the  User  name  field  blank. The first time you open the browser-based utility, use the default  password  admin.  (You  can  set  a  new  password from the Administration > Management screen.) Click OK to continue.Login ScreenSetup > Basic SetupThe first screen that appears is the Basic Setup screen. This allows you to change the Router’s general settings. Setup > Basic SetupLanguageSelect your language To use a different language, select one  from  the  drop-down  menu.  The  language  of  the browser-based  utility  will  change  five  seconds  after  you select another language.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Internet SetupThe Internet Setup section configures the Router to your Internet  connection.  Most  of  this  information  can  be obtained through your Internet Service Provider (ISP).Internet Connection TypeSelect the type of Internet connection your ISP provides from the drop-down menu. These are the available types: •Automatic Configuration - DHCP •Static IP •PPPoE •PPTP •L2TP •Telstra Cable
Chapter 3 Advanced Configuration5Wireless-N Home RouterAutomatic Configuration - DHCPBy  default,  the  Router’s  Internet  Connection Type  is  set to  Automatic  configuration  -  DHCP,  which  should  be kept only if your ISP supports DHCP or you are connecting through a dynamic IP address. (This option usually applies to cable connections.)Internet Connection Type > Automatic Configuration - DHCPStatic IPIf  you  are  required  to  use  a  permanent  IP  address  to connect to the Internet, select Static IP.Internet Connection Type > Static IPInternet IP Address  This is the Router’s IP address, when seen from the Internet. Your ISP will provide you with the IP Address you need to specify here.Subnet Mask  This is the Router’s Subnet Mask, as seen by users on the Internet (including your ISP). Your ISP will provide you with the Subnet Mask.Default Gateway  Your  ISP  will  provide you  with  the  IP address of the ISP server.DNS 1-3  Your ISP will provide you with at least one DNS (Domain Name System) server IP address.PPPoESome DSL-based ISPs use PPPoE (Point-to-Point Protocol over Ethernet) to establish Internet connections. If you are connected to the Internet through a DSL line, check with your ISP to see if they use PPPoE. If they do, you will have to enable PPPoE.Internet Connection Type > PPPoEUsername  and  Password  Enter  the  Username  and Password provided by your ISP.Service Name (Optional)  If provided by your ISP, enter the Service Name.Connect on Demand: Max Idle Time  You can configure the Router to cut the Internet connection after it has been inactive for a specified period of time (Max Idle Time). If your  Internet  connection  has  been  terminated  due  to inactivity,  Connect  on  Demand  enables  the  Router  to automatically re-establish your connection as soon as you attempt to access the Internet again. To use this option, select  Connect  on  Demand.  In  the  Max  Idle  Time  field, enter the number of minutes you want to have elapsed before your Internet connection  terminates. The default Max Idle Time is 5 minutes.Keep  Alive:  Redial  Period  If  you  select  this  option, the  Router  will  periodically  check  your  Internet connection.  If  you  are  disconnected,  then  the  Router will  automatically  re-establish  your  connection.  To  use this option,  select Keep Alive. In  the  Redial Period  field, you  specify  how  often  you  want  the  Router  to  check the  Internet  connection.  The  default  Redial  Period  is  30 seconds.PPTPPoint-to-Point Tunneling Protocol (PPTP) is a service that applies to connections in Europe only.Internet Connection Type > PPTPIf your ISP supports DHCP or you are connecting through a dynamic IP address, then select Obtain an IP Address Automatically. If you are required to use a permanent IP address to connect to the Internet, then select Specify an IP Address. Then configure the following: •Specify an IP Address  This is the Router’s IP address, as  seen  from  the  Internet. Your  ISP  will  provide  you with the IP Address you need to specify here. •Subnet  Mask  This  is  the  Router’s  Subnet  Mask,  as seen by users on the Internet (including your ISP). Your ISP will provide you with the Subnet Mask. •Default Gateway  Your ISP will provide you with the IP address of the ISP server.
Chapter 3 Advanced Configuration6Wireless-N Home Router •DNS 1-3  Your  ISP will provide you with at least one DNS (Domain Name System) server IP address.PPTP Server IP Address  Your ISP will provide you with the IP address of the PPTP server.Username  and  Password  Enter  the  Username  and Password provided by your ISP.Connect on Demand: Max Idle Time  You can configure the Router to cut the Internet connection after it has been inactive for a specified period of time (Max Idle Time). If your  Internet  connection  has  been  terminated  due  to inactivity,  Connect  on  Demand  enables  the  Router  to automatically re-establish your connection as soon as you attempt to access the Internet again. To use this option, select  Connect  on  Demand.  In  the  Max  Idle  Time  field, enter the number of minutes you want to have elapsed before your Internet connection  terminates. The default Max Idle Time is 5 minutes.Keep Alive: Redial  Period If  you  select  this  option,  the Router will  periodically check your Internet connection.  If you  are  disconnected,  then  the  Router  will  automatically  re-establish  your  connection.  To  use  this  option,  select Keep Alive. In the Redial Period field, you specify how often you want the Router to check the Internet connection. The default value is 30 seconds.L2TPL2TP is a service that applies to connections in Israel only.Internet Connection Type > L2TPServer  IP  Address  This  is  the  IP  address  of  the  L2TP Server. Your ISP will provide you with the IP Address you need to specify here.Username  and  Password  Enter  the  Username  and Password provided by your ISP.Connect on Demand: Max Idle Time  You can configure the Router to cut the Internet connection after it has been inactive for a specified period of time (Max Idle Time). If your  Internet  connection  has  been  terminated  due  to inactivity,  Connect  on  Demand  enables  the  Router  to automatically re-establish your connection as soon as you attempt to access the Internet again. To use this option, select  Connect  on  Demand.  In  the  Max  Idle  Time  field, enter the number of minutes you want to have elapsed before your Internet connection  terminates. The default Max Idle Time is 5 minutes.Keep  Alive:  Redial  Period  If  you  select  this  option, the  Router  will  periodically  check  your  Internet connection.  If  you  are  disconnected,  then  the  Router will  automatically  re-establish  your  connection.  To  use this option,  select Keep Alive. In  the  Redial Period  field, you  specify  how  often  you  want  the  Router  to  check the  Internet  connection.  The  default  Redial  Period  is  30 seconds.Telstra CableTelstra  Cable  is  a  service  that  applies  to  connections  in Australia only.Internet Connection Type > Telstra CableServer IP Address  This is the IP address of the Heartbeat Server. Your ISP will provide you with the IP Address you need to specify here.Username  and  Password  Enter  the  Username  and Password provided by your ISP.Connect on Demand: Max Idle Time  You can configure the Router to cut the Internet connection after it has been inactive for a specified period of time (Max Idle Time). If your  Internet  connection  has  been  terminated  due  to inactivity,  Connect  on  Demand  enables  the  Router  to automatically re-establish your connection as soon as you attempt to access the Internet again. To use this option, select  Connect  on  Demand.  In  the  Max  Idle  Time  field, enter the number of minutes you want to have elapsed before your Internet connection  terminates. The default Max Idle Time is 5 minutes.Keep  Alive:  Redial  Period  If  you  select  this  option, the  Router  will  periodically  check  your  Internet connection.  If  you  are  disconnected,  then  the  Router will  automatically  re-establish  your  connection.  To  use this option,  select Keep Alive. In  the  Redial Period  field, you  specify  how  often  you  want  the  Router  to  check the  Internet  connection.  The  default  Redial  Period  is  30 seconds.Optional SettingsSome of these settings may be required by your ISP. Verify with your ISP before making any changes.Optional Settings
Chapter 3 Advanced Configuration7Wireless-N Home RouterHost Name and Domain Name  These fields allow you to supply a host and domain name for the Router. Some ISPs, usually cable ISPs, require these names as identification. You  may  have  to  check  with  your  ISP  to  see  if  your broadband  Internet  service  has been  configured with  a host and domain name. In most cases, leaving these fields blank will work. MTU  MTU is the Maximum Transmission Unit. It specifies the largest packet size permitted for Internet transmission. Select Manual if you want to manually enter the largest packet size that is transmitted. To have the Router select the  best  MTU  for  your  Internet  connection,  keep  the default, Auto.Size  When Manual is selected in the MTU field, this option is enabled. Leave this value in the 1200 to 1500 range. The default size depends on the Internet Connection Type: •DHCP, Static IP, or Telstra: 1500 •PPPoE: 1492 •PPTP or L2TP: 1460Network SetupThe  Network  Setup section  changes the  settings  of the local  network. Wireless  setup  is  performed  through  the Wireless tab.Router IPThis  presents  both  the  Router’s  Local  IP  Address  and Subnet Mask as seen by your network.Router IPDHCP Server SettingThe settings allow you to configure the Router’s Dynamic Host Configuration Protocol (DHCP) server function. The Router can be used as a DHCP server for your network. A DHCP server automatically assigns an IP address to each computer on your network. If you choose to enable the Router’s DHCP server option, make sure there is no other DHCP server on your network. DHCP Server SettingDHCP Server  DHCP is enabled by factory default. If you already have a DHCP server on your network, or you do not want a DHCP server, then select Disabled (no other DHCP features will be available).DHCP Reservation  Click this button if you want to assign a fixed local IP address to a MAC address. DHCP ReservationYou will see a list of DHCP clients with the following information:  Client  Name,  Interface,  IP  Address,  and MAC Address. DHCP Reservation •Select  Clients  from  DHCP  Table  Click  the  Select check box  to  reserve a  client’s  IP address. Then  click Add Clients. •Manually  Adding  Client  To  manually  assign  an  IP address,  enter  the  client’s  name  in  the  Enter  Client Name field. Enter the IP address you want it to have in the Assign IP Address field. Enter its MAC address in the To This MAC Address field. Then click Add.Clients Already ReservedA list of DHCP clients and their fixed local IP addresses will be displayed at the bottom of the screen. If  you want to remove a client from this list, click Remove.Click  Save  Settings  to  apply  your  changes,  or  click Cancel Changes to clear your changes. To update the on-screen information, click Refresh. To exit this screen and return to the Basic Setup screen, click Close.Start  IP  Address  Enter  a  value  for  the  DHCP  server  to start with when issuing IP addresses. Because the Router’s default IP address is 192.168.1.1, the Start IP Address must be 192.168.1.2 or greater, but smaller than 192.168.1.253. The default is 192.168.1.100.Maximum Number of Users  Enter the maximum number of computers that you want the DHCP server to assign IP
Chapter 3 Advanced Configuration8Wireless-N Home Routeraddresses  to.  This  number  cannot  be  greater  than  253. The default is 50.IP Address Range  Displayed here is the range of available IP addresses.Client Lease Time  The Client Lease Time is the amount of time a network user will be allowed connection to the Router  with their  current  dynamic IP  address. Enter  the amount of time, in minutes, that the user will be “leased” this dynamic  IP address.  After the time  has  expired,  the user  will  be  automatically  assigned  a  new  dynamic  IP address,  or  the  lease  will  be  renewed. The  default  is  0 minutes, which means one day.Static DNS 1-3 The Domain Name  System (DNS) is  how the  Internet  translates  domain  or  website  names  into Internet addresses or URLs. Your ISP will provide you with at least one DNS Server IP Address. If you wish to use another, enter that IP Address in one of these fields. You can enter up to three DNS Server IP Addresses here. The Router will use these for quicker access to functioning DNS servers.WINS  The  Windows  Internet  Naming  Service  (WINS) manages each computer’s interaction with the Internet. If you use a WINS server, enter that server’s IP Address here. Otherwise, leave this blank.Time SettingsTime Zone  Select the time zone in which your network functions  from  this  drop-down  menu.  (You  can  even automatically adjust for daylight saving time.)Time SettingsClick Save Settings to apply your changes, or click Cancel Changes to clear your changes.Setup > DDNSThe Router offers a Dynamic Domain Name System (DDNS) feature.  DDNS  lets  you  assign  a  fixed  host  and  domain name to a dynamic Internet IP address. It is useful when you  are  hosting  your  own website,  FTP  server,  or  other server behind the Router. Before  you  can  use  this  feature,  you  need  to  sign up  for  DDNS  service  with  a  DDNS  service  provider,  www.dyndns.org or www.TZO.com. If you do not want to use this feature, keep the default, Disabled.DDNSDDNS ServiceIf  your  DDNS  service  is  provided  by  DynDNS.org,  then select  DynDNS.org  from  the  drop-down  menu.  If  your DDNS service is  provided by TZO,  then  select TZO.com. The  features  available  on  the  DDNS  screen  will  vary, depending on which DDNS service provider you use. DynDNS.orgSetup > DDNS > DynDNSUsername  Enter the Username for your DDNS account.Password  Enter the Password for your DDNS account.Host Name  The is the DDNS URL assigned by the DDNS service.System  Select  the  DynDNS  service  you  use:  Dynamic, Static, or Custom. The default selection is Dynamic.Mail Exchange (Optional)  Enter the address of your mail exchange server, so e-mails to your DynDNS address go to your mail server.Backup MX  This feature allows the mail exchange server to be a backup. To disable this feature, keep the default, Disabled. To  enable  the  feature,  select  Enabled.  If  you are  not  sure  which  setting  to  select,  keep  the  default, Disabled.Wildcard  This  setting  enables  or  disables  wildcards for  your  host.  For  example,  if  your  DDNS  address  is myplace.dyndns.org  and  you  enable  wildcards,  then x.myplace.dyndns.org will work as well (x is the wildcard). To disable wildcards, keep the default, Disabled. To enable wildcards, select Enabled. If you are not sure which setting to select, keep the default, Disabled.Internet IP  Address  The  Router’s  Internet  IP address is displayed here. Because it is dynamic, it will change.Status  The  status  of  the  DDNS  service  connection  is displayed here.Update  To manually trigger an update, click this button.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.
Chapter 3 Advanced Configuration9Wireless-N Home RouterTZO.comSetup > DDNS > TZOE-mail Address, TZO Key, and Domain Name  Enter the settings of the account you set up with TZO.Internet IP  Address  The  Router’s  Internet  IP address is displayed here. Because it is dynamic, it will change.Status  The  status  of  the  DDNS  service  connection  is displayed here.Update  To manually trigger an update, click this button.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Setup > MAC Address CloneA  MAC  address  is a  12-digit  code  assigned  to  a  unique piece of hardware for identification. Some ISPs will require you  to  register  a  MAC  address  in  order  to  access  the Internet. If you do not wish to re-register the MAC address with your ISP, you may assign the MAC address you have currently registered with your ISP to the Router with the MAC Address Clone feature.Setup > MAC Address CloneMAC Address CloneEnabled/Disabled  To  have  the  MAC  Address  cloned, select Enabled.MAC  Address  Enter  the  MAC  Address  registered  with your ISP here.Clone My PC’s MAC  Click this button to clone the MAC address of the computer you are using.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Setup > Advanced RoutingThis  screen  is  used  to  set  up  the  Router’s  advanced functions.  Operating  Mode  allows  you  to  select  the type(s) of advanced functions you use. Dynamic Routing automatically adjusts how packets travel on your network. Static Routing  sets up a  fixed  route  to  another network destination.Setup > Advanced RoutingAdvanced RoutingNATEnabled/Disabled  If this Router is hosting your network’s connection to the Internet, keep the default, Enabled. If another  router  exists on your  network, select  Disabled. When the NAT setting is disabled, dynamic routing will be enabled.Dynamic Routing (RIP)Enabled/Disabled  This  feature  enables  the  Router  to automatically adjust to physical changes in the network’s layout and exchange routing tables with the other router(s). The Router determines the network packets’ route based on the fewest number of hops between the source and the  destination.  When  the  NAT  setting  is  enabled,  the Dynamic Routing feature is automatically disabled. When the NAT setting is disabled, this feature is available. Select Enabled to use the Dynamic Routing feature.Static RoutingA static route is a pre-determined pathway that network information must travel to reach a specific host or network. Enter the  information described  below to  set up  a new static route.
Chapter 3 Advanced Configuration10Wireless-N Home RouterRoute Entries  To set up a static route between the Router and  another  network,  select  a  number  from  the  drop-down list. Click Delete This Entry to delete a static route.Enter  Route  Name  Enter  a  name  for  the  Route  here, using a maximum of 25 alphanumeric characters.Destination LAN IP  The Destination LAN IP is the address of the remote network or host to which you want to assign a static route.Subnet  Mask  The  Subnet  Mask  determines  which portion  of  a  Destination  LAN  IP  address  is  the  network portion, and which portion is the host portion. Default Gateway  This  is  the IP address  of the gateway device that allows for contact between the Router and the remote network or host.Interface  This interface tells you whether the Destination IP Address is on the LAN & Wireless (Ethernet and wireless networks) or the WAN (Internet).Click Show Routing Table to view the static routes you have already set up.Advanced Routing > Routing TableRouting TableFor each route, the Destination LAN IP address, Subnet Mask, Gateway, and Interface are displayed. To update the information, click Refresh. To exit this screen and return to the Advanced Routing screen, click Close.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Wireless > Basic Wireless SettingsThe basic settings for wireless networking are set on this screen.There  are  two  ways  to  configure  the  Router’s  wireless network(s), manual and Wi-Fi Protected Setup.Wi-Fi Protected Setup is a feature that makes it easy to set up your wireless network. If you have client devices, such as wireless adapters, that support Wi-Fi Protected Setup, then you can use Wi-Fi Protected Setup.Configuration View  To manually configure your wireless network,  select  Manual.  Proceed  to  Basic  Wireless Settings  (Manual),  page  10.  To  use  Wi-Fi  Protected Setup,  select  Wi-Fi  Protected  Setup.  Proceed  to  Wi-Fi Protected Setup, page 11.Basic Wireless Settings (Manual)Wireless > Basic Wireless Settings (Manual Setup)Network  Mode  From  this  drop-down  menu,  you  can select the wireless standards running on your network. If you have Wireless-N, Wireless-G, and Wireless-B devices in your network, keep the default, Mixed. If you have only Wireless-G and Wireless-B devices in your network, select BG-Mixed.  If  you  have  only  Wireless-N  devices,  select Wireless-N  Only.  If  you  have  only  Wireless-G  devices, select  Wireless-G  Only.  If  you  have  only  Wireless-B devices, select  Wireless-B Only. If  you do not have any wireless devices in your network, select Disabled.Network  Name  (SSID)  The  SSID  is  the  network  name shared  among  all  points  in  a  wireless  network.  The SSID  must  be  identical  for  all  devices  in  the  wireless network.  It  is  case-sensitive  and  must  not  exceed  32 characters (use any of the characters on the keyboard). Make  sure  this setting is  the same  for  all points in  your wireless network. For added security, you should change the default SSID (linksys) to a unique name.Channel  Width  For  best  performance  in  a  Wireless-N network, select 40MHz only. For Wireless-G and Wireless-B networking  only,  keep  the  default,  20MHz  only.  If  you are not sure which option to use, select Auto (20MHz or 40MHz).NOTE: If you select 40MHz only for the Channel Width  setting,  then  Wireless-N  can  use  two channels:  a  primary  one  (Wide  Channel)  and a  secondary  one  (Standard  Channel). This  will enhance Wireless-N performance.Wide  Channel  If  40MHz  only  is  the  Channel  Width setting, then this setting will be available for your primary
Chapter 3 Advanced Configuration11Wireless-N Home RouterWireless-N  channel.  Select  any  channel  from  the  drop-down menu. If you are not sure which channel to select, keep the default, Auto.Standard Channel  If  20MHz only  is the Channel Width setting,  then  select  the  appropriate  channel  for  your wireless  network.  If  you  are  not  sure  which  channel  to select, then keep the default, Auto. If  40MHz  only  is  the  Channel  Width  setting,  then  the Standard  Channel  will  be  a  secondary  channel  for Wireless-N  (2.4  GHz).  If  you  selected  a  specific  channel for the Wide Channel setting, then the Standard Channel options will be available. Select the appropriate channel for your wireless network. SSID  Broadcast  When  wireless  clients  survey  the  local area  for  wireless  networks  to  associate  with,  they  will detect the SSID broadcast by the Router. To broadcast the Router’s SSID, keep the default, Enabled. If you do not want to broadcast the Router’s SSID, then select Disabled.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Wi-Fi Protected SetupThere are three methods available. Use the method that applies to the client device you are configuring.Wireless > Basic Wireless Settings (Wi-Fi Protected Setup)Wi-Fi Protected Setup ConfiguredNOTE:  Wi-Fi  Protected  Setup  configures  one client device at a time. Repeat the instructions for  each  client  device  that  supports  Wi-Fi Protected Setup.Method #1Use this method if your client device has a Wi-Fi Protected Setup button.1.  Click  or press  the Wi-Fi Protected  Setup  button  on the client device.2.  Click  the  Wi-Fi  Protected  Setup  button  on  this screen.3.  After  the  client  device  has  been  configured,  click OK.  Then  refer  back  to  your  client  device  or  its documentation for further instructions.Wi-Fi Protected Setup > CongratulationsMethod #2Use this method if your client device has a Wi-Fi Protected Setup PIN number.1.  Enter the PIN number in the field on this screen.2.  Click Register.3.  After  the  client  device  has  been  configured,  click OK.  Then  refer  back  to  your  client  device  or  its documentation for further instructions.
Chapter 3 Advanced Configuration12Wireless-N Home RouterMethod #3Use this method if your client device asks for the Router’s PIN number. 1.  Enter the PIN number listed on this screen. (It is also listed on the label on the bottom of the Router.)2.  After  the  client  device  has  been  configured,  click OK.  Then  refer  back  to  your  client  device  or  its documentation for further instructions.The Wi-Fi Protected Setup Status, Network Name (SSID), Security, Encryption, and Passphrase are displayed at the bottom of the screen.NOTE:  If  you  have  client  devices  that  do  not support Wi-Fi Protected Setup, note the wireless settings,  and  then  manually  configure  those client devices.Wireless > Wireless SecurityThe  Wireless  Security  screen  configures  the  security  of your  wireless  network.  There  are  six  wireless  security mode  options  supported  by  the  Router:  WPA  Personal, WPA Enterprise, WPA2 Personal, WPA2 Enterprise, RADIUS, and WEP. (WPA stands for Wi-Fi Protected Access, which is a security standard stronger than WEP encryption. WEP stands for Wired Equivalent Privacy, while RADIUS stands for  Remote  Authentication  Dial-In  User  Service.)  These six  are  briefly  discussed  here.  For  detailed  instructions on  configuring  wireless  security  for  the  Router,  refer  to Chapter 2:  Wireless Security Checklist, page 3.Wireless SecuritySecurity ModeSelect  the security  method for your  wireless  network. If you do not want to use wireless security, keep the default, Disabled.WPA PersonalNOTE: If you are using WPA, then each device in your wireless network MUST use the same WPA method and shared key, or else the network will not function properly.Security Mode > WPA PersonalPassphrase  Enter a Passphrase of 8-63 characters. Key Renewal  Enter a Key Renewal period, which instructs the  Router  how  often  it  should  change  the  encryption keys. The default is 3600 seconds.WPA2 PersonalSecurity Mode > WPA2 PersonalEncryption  WPA2  supports  two  encryption  methods, TKIP and  AES,  with dynamic encryption keys. Select the type of algorithm, AES or TKIP or AES. The default is TKIP or AES.Passphrase  Enter a Passphrase of 8-63 characters. Key Renewal  Enter a Key Renewal period, which instructs the  Router  how  often  it  should  change  the  encryption keys. The default is 3600 seconds.
Chapter 3 Advanced Configuration13Wireless-N Home RouterWPA EnterpriseThis option features WPA used with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router.) Security Mode > WPA EnterpriseRADIUS Server  Enter the IP address of the server.RADIUS Port   Enter the port number of the server. The default is 1812.Shared Secret  Enter the key shared between the Router and the server.Key Renewal  Enter a Key Renewal period, which instructs the  Router  how  often  it  should  change  the  encryption keys. The default is 3600 seconds.WPA2 EnterpriseThis option features WPA2 used with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router.)Security Mode > WPA2 EnterpriseEncryption  WPA2  supports  two  encryption  methods, TKIP and  AES,  with dynamic encryption keys. Select the type of algorithm, AES or TKIP or AES. The default is TKIP or AES.RADIUS Server  Enter the IP address of the server.RADIUS Port   Enter the port number of the server. The default is 1812.Shared Secret  Enter the key shared between the Router and the server.Key Renewal  Enter a Key Renewal period, which instructs the  Router  how  often  it  should  change  the  encryption keys. The default is 3600 seconds.RADIUSThis option features WEP used with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router.) IMPORTANT:  If  you  are  using  WEP,  then  each device  in  your  wireless  network  MUST  use  the same WEP  encryption  method  and  key,  or  else the network will not function properly.Security Mode > RADIUSRADIUS Server  Enter the IP address of the server.RADIUS Port   Enter the port number of the server. The default is 1812.Shared Secret  Enter the key shared between the Router and the server.Encryption  Select  a  level  of  WEP  encryption, 40/64 bits (10 hex digits) or 104/128 bits (26 hex digits). The default is 40/64 bits (10 hex digits).Passphrase  Enter a Passphrase to automatically generate WEP keys. Then click Generate.Key 1  If you did  not enter a Passphrase, enter the WEP key manually.TX Key  TX (Transmit) Key 1 is used.
Chapter 3 Advanced Configuration14Wireless-N Home RouterWEPWEP is a basic encryption method, which is not as secure as WPA. IMPORTANT:  If  you  are  using  WEP  encryption, then each device in your wireless network MUST use the same WEP encryption method and key, or else the network will not function properly.Security Mode > WEPEncryption  Select  a  level  of  WEP  encryption, 40/64 bits (10 hex digits) or 104/128 bits (26 hex digits). The default is 40/64 bits (10 hex digits).Passphrase  Enter a Passphrase to automatically generate WEP keys. Then click Generate.Key 1  If you did  not enter a Passphrase, enter the WEP key manually.TX Key  TX (Transmit) Key 1 is used.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Wireless > Wireless MAC FilterWireless access can be filtered by using the MAC addresses of the wireless devices transmitting within your network’s radius. Wireless > Wireless MAC FilterWireless MAC FilterEnabled/Disabled To filter wireless users by MAC Address, either permitting or blocking access, select Enabled. If you do not wish to filter users by MAC Address, keep the default, Disabled.Access RestrictionPrevent  Select  this  option to  block  wireless  access  by MAC Address. This button is selected by default.Permit  Select this option to allow wireless access by MAC Address. This button is not selected by default.MAC Address Filter ListWireless Client List  Click this button to open the Wireless Client List screen.
Chapter 3 Advanced Configuration15Wireless-N Home RouterWireless Client ListWireless Client ListThis  screen  shows  computers  and  other  devices  on the wireless network. The list can be sorted by Client Name, IP Address, MAC Address, and Status. Select Save to MAC Address Filter List for any device you want to add to the MAC Address Filter List. Then click Add. To  update  the  on-screen  information,  click  Refresh. To exit this screen and return to the Wireless MAC Filter screen, click Close.MAC  01-32  Enter  the  MAC  addresses  of  the  devices whose wireless access you want to block or allow.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Wireless > Advanced Wireless SettingsThis  Advanced  Wireless  Settings  screen  is  used  to  set  up the Router’s advanced wireless functions. These settings should  only  be  adjusted  by  an  expert  administrator  as incorrect settings can reduce wireless performance.Wireless > Advanced Wireless SettingsAdvanced WirelessAP Isolation  This option isolates all wireless clients and wireless devices on your network from each other. Wireless devices will be able to communicate with the Router but not with each other. To use this option, select Enable. AP Isolation is disabled by default. Frame  Burst  This  option  should  provide  your  network with greater performance, depending on the manufacturer of  your  wireless  products. To  use  this  option,  keep  the default, Enable. To disable this option, select Disable.Authentication  Type  The  Authentication  Type  setting is  available  if  the  Security  Mode  is  RADIUS  or WEP. The default is set to Auto, which allows either Open System or  Shared  Key  authentication  to  be  used.  With  Open System authentication,  the sender  and  the recipient  do NOT use a WEP  key  for  authentication. With  Shared  Key authentication, the sender and recipient use a WEP key for authentication. Select Shared Key to only use Shared Key authentication.Basic Rate  The Basic Rate setting is not actually one rate of transmission but a series of rates at which the Router can  transmit.  (The  Basic  Rate  is  not  the  actual  rate  of data transmission. If you want to specify the Router’s rate of  data  transmission,  configure  the  Transmission  Rate setting.) The Router will advertise its Basic Rate to the other wireless  devices  in  your  network,  so  they  know  which rates will be used. The Router will also advertise that it will automatically  select  the  best  rate  for  transmission.  The default setting is Auto, when the Router can transmit at all standard wireless rates (1-2 Mbps, 5.5 Mbps, 11 Mbps, 18 Mbps, and 24Mbps). Select 1-2Mbps for use with older wireless  technology.  Select  All,  when  the  Router  can transmit at all wireless rates. Transmission Rate  The Transmission setting is available if  the  Network  Mode  is  BG-Mixed,  Wireless-G  Only,  or Wireless-B Only. The rate of data transmission should be set depending on the speed of your wireless network. Select from a range of transmission speeds, or keep the default, Auto,  to  have  the  Router  automatically  use  the  fastest possible data rate and enable the Auto-Fallback feature. Auto-Fallback will negotiate the best possible connection speed between the Router and a wireless client. N  Transmission  Rate  The  N  Transmission  setting  is available if the Network Mode is Mixed or Wireless-N Only. The  rate  of  data  transmission  should  be  set  depending on the speed of your Wireless-N networking. Select from a  range  of  transmission  speeds,  or  keep  the  default, Auto,  to  have  the  Router  automatically  use  the  fastest possible data rate and enable the Auto-Fallback feature. Auto-Fallback will negotiate the best possible connection speed between the Router and a wireless client.CTS Protection Mode  The Router automatically uses CTS (Clear-To-Send) Protection Mode when your Wireless-N and
Chapter 3 Advanced Configuration16Wireless-N Home RouterWireless-G devices are experiencing severe problems and are not able to transmit to the Router in an environment with heavy 802.11b traffic. This option boosts the Router’s ability to catch all Wireless-N and Wireless-G transmissions but  severely  decreases  performance. To use  this option, keep  the  default,  Auto.  To  disable  this  option,  select Disabled. Beacon  Interval  Enter  a  value  between  1  and  65,535 milliseconds.  The  Beacon  Interval  value  indicates  the frequency  interval  of  the  beacon.  A  beacon  is  a  packet broadcast  by  the  Router  to  synchronize  the  wireless network. The default is 100 milliseconds.DTIM Interval  This value, between 1 and 255, indicates the  interval  of  the  Delivery  Traffic  Indication  Message (DTIM).  A  DTIM  field  is  a  countdown  field  informing clients  of  the  next  window  for  listening  to  broadcast and  multicast  messages. When  the  Router  has  buffered broadcast or multicast messages for associated clients, it sends the next DTIM with a DTIM Interval value. Its clients hear  the  beacons  and  awaken  to  receive  the  broadcast and multicast messages. The default value is 1.Fragmentation  Threshold  This  value  specifies  the maximum  size  for  a  packet  before  data  is  fragmented into  multiple  packets.  If  you  experience  a  high  packet error  rate,  you  may  slightly  increase  the  Fragmentation Threshold. Setting the Fragmentation Threshold too low may  result  in  poor  network  performance.  Only  minor reduction of the default value is recommended. In most cases, it should remain at its default value of 2346.RTS Threshold  Should you encounter inconsistent data flow, only minor reduction of the default value, 2347, is recommended.  If  a  network  packet  is  smaller  than  the preset  RTS  threshold  size,  the  RTS/CTS  mechanism  will not be enabled. The Router sends Request to Send (RTS) frames  to  a  particular  receiving  station  and  negotiates the sending of a data frame. After receiving an RTS, the wireless station responds with a Clear to Send (CTS) frame to acknowledge the right to begin transmission. The RTS Threshold  value  should  remain  at  its  default  value  of 2347.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Security > FirewallThe Firewall screen is used to configure a firewall that can filter out various types of unwanted traffic on the Router’s local network. Security > FirewallFirewallSPI  Firewall  Protection  To  use  firewall  protection, keep  the  default  selection,  Enabled. To turn  off firewall protection, select Disabled.Internet FilterFor the following options, select the option to enable it, or deselect the option to disable it.Filter Anonymous Internet Requests  This feature makes it more difficult for outside users to work their way into your network. This feature is enabled by default. Deselect this option to allow anonymous Internet requests.Filter  Multicast  Multicasting  allows  for  multiple transmissions  to  specific  recipients  at  the  same  time.  If multicasting  is  permitted,  then  the  Router  will  allow  IP multicast  packets  to  be  forwarded  to  the  appropriate computers. Select  this  option to  filter  multicasting. This option is disabled by default.Filter Internet  NAT  Redirection  This  feature  uses  port forwarding  to  block  access  to  local  servers  from  local networked computers. Select this option to filter Internet NAT redirection. This option is disabled by default.Filter IDENT (Port 113)  This feature keeps port 113 from being scanned by devices outside of your local network. This feature is enabled by default. Deselect this option to disable it.Web FilterFor the following options, select the option to enable it, or deselect the option to disable it.Proxy  Use  of WAN  proxy  servers  may  compromise  the Gateway’s security. Denying Proxy will  disable access  to any WAN proxy servers. Select this option to enable proxy filtering. This option is disabled by default.Java  Java is a programming language for websites. If you deny Java, you run the risk of not having access to Internet sites  created  using  this  programming  language.  Select
Chapter 3 Advanced Configuration17Wireless-N Home Routerthis option to enable Java filtering. This option is disabled by default.ActiveX  ActiveX is a programming language for websites. If you deny ActiveX, you run the risk of not having access to Internet sites created using this programming language. Select this option to enable ActiveX filtering. This option is disabled by default.Cookies  A  cookie is data stored on your computer and used by Internet sites when you interact with them. Select this  option  to  filter  cookies.  This  option  is  disabled  by default.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Security > VPN PassthroughThe  VPN  Passthrough  screen  allows  you  to  enable  VPN tunnels using IPSec, PPTP, or L2TP protocols to pass through the Router’s firewall.Security > VPN PassthroughVPN PassthroughIPSec  Passthrough  Internet  Protocol Security  (IPSec)  is a suite of protocols used to implement secure exchange of packets at the IP layer. To allow IPSec tunnels to pass through the Router, keep the default, Enabled. PPTP  Passthrough  Point-to-Point  Tunneling  Protocol (PPTP)  allows  the  Point-to-Point  Protocol  (PPP)  to  be tunneled through an IP network. To allow PPTP tunnels to pass through the Router, keep the default, Enabled. L2TP  Passthrough  Layer  2  Tunneling  Protocol  is  the method  used  to  enable  Point-to-Point  sessions  via  the Internet on the Layer 2 level. To allow L2TP tunnels to pass through the Router, keep the default, Enabled.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Access Restrictions > Internet AccessThe  Internet  Access  screen  allows  you  to  block  or  allow specific kinds of Internet usage and traffic, such as Internet access, designated services, and websites during specific days and times.Access Restrictions > Internet AccessInternet Access PolicyAccess Policy  Access can  be  managed by a  policy.  Use the settings  on this screen to establish  an  access policy (after  Save Settings  is  clicked).  Selecting  a  policy  from the drop-down menu will display that policy’s settings. To delete a policy, select that policy’s number and click Delete This Entry. To view all the policies, click Summary. SummaryThe policies are listed with the following information: No., Policy  Name,  Days,  and Time  of  Day. To delete  a  policy, select the policy’s Delete option, and then click Delete. To return to the Internet Access Policy screen, click Close.
Chapter 3 Advanced Configuration18Wireless-N Home RouterSummaryStatus  Policies are disabled by default. To enable a policy, select the policy number from the drop-down menu, and select Enabled.To create a policy, follow steps 1-11. Repeat these steps to create additional policies, one at a time.1.  Select  a  number  from  the  Access  Policy  drop-down menu.2.  Enter a Policy Name in the field provided. 3.  To enable this policy, select Enabled.4.  Click  Edit  List  to  select  which  computers  will  be affected by the policy. The Internet Access PC List screen appears. You can select a computer by MAC address or IP address. You can also enter a range of IP addresses if you want this policy to affect a group of computers. After  making  your  changes,  click  Save  Settings  to apply your changes, or click Cancel Changes to clear your changes. Then click Close. Internet Access PC List5.  Select  the  appropriate  option,  Deny  or  Allow, depending  on  whether  you  want  to  block  or  allow Internet  access  for  the  computers  you  listed  on  the Internet Access PC List screen.6.  Decide which days and what times you want this policy to be enforced. Select the individual days during which the policy  will be in effect, or select Everyday. Then enter a range of hours and minutes during which the policy will be in effect, or select 24 Hours.7.  You  can  block  websites  with  specific  URL  addresses. Enter each URL in a separate Website Blocking by URL Address field.8.  You can also block websites using specific keywords. Enter each keyword in a separate Website Blocking by Keyword field. 9.  You  can  filter  access  to  various  services  accessed over  the  Internet,  such  as  FTP  or  telnet.  (You can  block  up  to  three  applications  per  policy.)  From the Applications list, select the application you want to block. Then click the >> button to move it to the  Blocked  List. To  remove  an application  from  the Blocked List, select it and click the << button.10. If the application you want to block is not listed or you want to edit a service’s settings, enter the application’s name  in  the  Application  Name  field.  Enter  its  range in the Port Range fields. Select its protocol from the Protocol drop-down menu. Then click Add.To modify a service, select it from the Application list. Change its name, port range, and/or protocol setting. Then click Modify.
Chapter 3 Advanced Configuration19Wireless-N Home RouterTo delete a service, select it from the Application list. Then click Delete.11. Click  Save  Settings  to  save  the  policy’s  settings,  or click Cancel Changes to clear the changes.Applications and Gaming > Single Port ForwardingThe Single Port Forwarding  screen allows you to  customize port services for common applications on this screen.When users send these types of requests to your network via the Internet, the Router will forward those requests to the appropriate  servers  (computers).  Before  using  forwarding, you  should  assign  static  IP  addresses  to  the  designated servers (use the DHCP Reservation feature on the Basic Setup screen; refer to DHCP Reservation, page 7).Applications and Gaming > Single Port ForwardingSingle Port ForwardingCommon  applications  are  available  for  the  first  five entries. Select the appropriate application. Then enter the IP address of the server that should receive these requests. Select Enabled to activate this entry.For additional applications, complete the following fields:Application Name  Enter the name you wish to give the application. Each name can be up to 12 characters.External  Port  Enter  the  external  port  number  used  by the server or Internet application. Check with the Internet application documentation for more information.Internal  Port  Enter  the  internal  port  number  used  by the server or Internet application. Check with the Internet application documentation for more information.Protocol  Select the protocol(s) used for this application, TCP, UDP, or Both.To IP Address  For each application, enter the IP address of the computer that should receive the requests. If you assigned  a  static  IP  address  to  the  computer,  then  you can look up its IP address; click DHCP Reservation on the Basic Setup screen (refer to DHCP Reservation, page 7).Enabled  For each application, select Enabled to enable port forwarding.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Applications and Gaming > Port Range ForwardingThe  Port  Range  Forwarding  screen  allows  you  to  set  up public  services  on  your  network,  such  as  web  servers, ftp  servers,  e-mail  servers,  or  other  specialized  Internet applications.  (Specialized  Internet  applications  are  any applications that  use Internet  access  to  perform  functions such as videoconferencing or online gaming. Some Internet applications may not require any forwarding.)When users send these types of requests to your network via the Internet, the Router will forward those requests to the appropriate  servers  (computers).  Before  using  forwarding, you  should  assign  static  IP  addresses  to  the  designated servers (use the DHCP Reservation feature on the Basic Setup screen; refer to DHCP Reservation, page 7).If you need to forward all ports to one computer, click the DMZ tab.Applications and Gaming > Port Range ForwardingPort Range ForwardingTo forward a port, enter the information on each line for the criteria required.Application  Name  In  this  field,  enter  the  name  you wish to give the application. Each name can be up to 12 characters.
Chapter 3 Advanced Configuration20Wireless-N Home RouterStart~End  Port  Enter  the  number  or  range  of  port(s) used  by  the  server  or  Internet  applications.  Check with  the  Internet  application  documentation  for  more information.Protocol  Select the protocol(s) used for this application, TCP, UDP, or Both.To IP Address  For each application, enter the IP address of the computer that should receive the requests. If you assigned  a  static  IP  address  to  the  computer,  then  you can look up its IP address; click DHCP Reservation on the Basic Setup screen (refer to DHCP Reservation, page 7).Enabled  Select  Enabled  to  enable  port  forwarding  for the applications you have defined.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Applications & Gaming > Port Range TriggeringThe  Port  Range  Triggering  screen  allows  the  Router  to watch  outgoing  data  for  specific  port  numbers.  The  IP address of the computer that sends the matching data is remembered by the Router, so that when the requested data returns through the Router, the data is pulled back to  the  proper  computer  by  way  of  IP  address  and  port mapping rules.Applications and Gaming > Port Range TriggeringPort Range TriggeringApplication  Name  Enter  the  application  name  of  the trigger.Triggered Range  For each application, enter the starting and ending port numbers of the triggered port number range. Check with the Internet application documentation for the port number(s) needed.Forwarded Range  For each application, enter the starting and ending port numbers of the forwarded port number range. Check with the Internet application documentation for the port number(s) needed.Enabled  Select Enabled to enable port triggering for the applications you have defined.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Applications and Gaming > DMZThe  DMZ  feature  allows  one  network  computer  to  be exposed  to  the  Internet  for  use  of  a  special-purpose service  such  as  Internet  gaming  or  videoconferencing. DMZ hosting forwards all the ports at the same time to one computer. The Port Range Forwarding feature is more secure because it only opens the ports you want to have opened,  while  DMZ  hosting  opens  all  the  ports  of  one computer, exposing the computer to the Internet. Applications and Gaming > DMZDMZAny computer whose port is being forwarded must have its DHCP client function disabled and should have a new static IP address assigned to it because its IP address may change when using the DHCP function.Enabled/Disabled  To  disable  DMZ  hosting,  select Disabled. To expose one computer, select Enabled. Then configure the following settings:Source IP Address  If you want any IP address to be the source, select Any IP Address. If you want to specify an IP address or range of IP addresses as the designated source, select and complete the IP address range fields.Destination  If  you  want to  specify  the DMZ  host by  IP address,  select  IP  Address  and  enter  the  IP  address  in the  field  provided.  If you  want  to specify  the  DMZ host
Chapter 3 Advanced Configuration21Wireless-N Home Routerby MAC address, select MAC Address and enter the MAC address in the field provided. To retrieve this information, click DHCP Client Table.DMZ > DHCP Client TableDHCP Client TableThe  DHCP  Client  Table  lists  computers  and  other devices that have been assigned IP addresses by the Router. The list can be sorted by Client Name, Interface, IP  Address,  MAC  Address,  and  Expires  time  (how much time is left for the current IP address). To select a  DHCP client,  click Select. To  update  the on-screen information,  click  Refresh.  To  exit  this  screen  and return to the DMZ screen, click Close. Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Applications and Gaming > QoSQuality  of  Service  (QoS)  ensures  better  service  to high-priority  types  of  network  traffic,  which  may involve  demanding,  real-time  applications,  such  as videoconferencing. Applications and Gaming > QoSQoS (Quality of Service)WirelessYou can configure the support and No Acknowledgement settings in this section.WMM  Support  If  you  have  other  devices  that  support Wi-Fi  Multimedia  (WMM)  on  your  network,  keep  the default, Enabled. Otherwise, select Disabled.No Acknowledgement  If you want to disable the Router’s Acknowledgement feature, so the Router will not re-send data if  an error  occurs,  then select  Enabled. Otherwise, keep the default, Disabled.Internet Access PriorityIn  this  section, you can  set  the bandwidth priority for a variety of applications and devices. There are four levels priority:  High,  Medium,  Normal,  or  Low.  When  you  set priority, do not set all applications to High, because this will defeat the purpose of allocating the available bandwidth. If you want to select below normal bandwidth, select Low. Depending  on  the  application,  a  few  attempts  may  be needed to set the appropriate bandwidth priority.Enabled/Disabled  To use the QoS policies you have set, keep the default, Enabled. Otherwise, select Disabled. CategorySelect  one  of  the  following  categories:  Applications, Online  Games,  MAC  Address,  Ethernet Port,  or  Voice Device. Proceed to the instructions for your selection.SummaryThis  lists  the  QoS  entries  you  have  created  for  your applications and devices. Refer to Summary, page 22 for more information.ApplicationsApplication  Select  the  appropriate  application.  If  you select  Add  a  New  Application,  follow  the  Add  a  New Application instructions.Priority  Select  the  appropriate  priority:  High,  Medium (Recommend), Normal, or Low.Click Add to save your changes. Your new entry appears in the Summary list.Add a New ApplicationQoS > Add a New ApplicationEnter a Name  Enter any name to indicate the name  of the entry.
Chapter 3 Advanced Configuration22Wireless-N Home RouterPort Range  Enter the port range that the application will be using. For example, if you want to allocate bandwidth for FTP, you can enter 21-21. If you need services for an application that uses from 1000 to 1250, you enter 1000-1250  as your  settings. You  can have  up to  three  ranges to  define  for  this  bandwidth  allocation.  Port  numbers can  range  from  1  to  65535.  Check  your  application’s documentation for details on the service ports used.Select the protocol TCP or UDP, or select Both. Priority  Select  the  appropriate  priority:  High,  Medium (Recommend), Normal, or Low.Click Add to save your changes. Your new entry appears in the Summary list.Online GamesQoS > Online GamesGame  Select the appropriate game. If you select Add a New Game, follow the Add a New Game instructions.Priority  Select  the  appropriate  priority:  High,  Medium (Recommend), Normal, or Low.Click Add to save your changes. Your new entry appears in the Summary list.Add a New GameQoS > Add a New GameEnter a Name  Enter any name to indicate the name  of the entry.Port Range  Enter the port range that the game will be using. You can have up to three ranges to define for this bandwidth allocation. Port numbers can range from 1 to 65535. Check your application’s documentation for details on the service ports used.Select the protocol TCP or UDP, or select Both. Priority  Select  the  appropriate  priority:  High,  Medium (Recommend), Normal, or Low.Click Add to save your changes. Your new entry appears in the Summary list.MAC AddressQoS > MAC AddressEnter a Name  Enter a name for your device.MAC Address  Enter the MAC address of your device.Priority  Select  the  appropriate  priority:  High,  Medium (Recommend), Normal, or Low.Click Add to save your changes. Your new entry appears in the Summary list.Ethernet PortQoS > Ethernet PortEthernet  Select the appropriate Ethernet port.Priority  Select  the  appropriate  priority:  High,  Medium (Recommend), Normal, or Low.Click Add to save your changes. Your new entry appears in the Summary list.Voice DeviceQoS > Voice DeviceMy  Voice  Device’s  MAC  Address  The  MAC  address  of your voice device is automatically displayed.Enter a Name  Enter a name for your voice device.MAC  Address  Enter  the  MAC  address  of  your  voice device.Priority  Select  the  appropriate  priority:  High (Recommend), Medium, Normal, or Low.Click Add to save your changes. Your new entry appears in the Summary list.SummaryThis  lists  the  QoS  entries  you  have  created  for  your applications and devices.
Chapter 3 Advanced Configuration23Wireless-N Home RouterPriority  This column displays the  bandwidth priority of High, Medium, Normal, or Low.Name  This  column  displays  the  application,  device,  or port name.Information  This  column  displays  the  port  range  or MAC address  entered for your entry. If  a pre-configured application or game was selected, there will be no valid entry shown in this section.Remove  Click this button to remove an entry.Edit  Click this button to make changes.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Administration > ManagementThe  Administration  >  Management  screen  allows  the network’s  administrator  to  manage  specific  Router functions for access and security.Administration > ManagementManagementRouter AccessTo ensure the Router’s security, you will be asked for your password  when  you  access  the  Router’s  browser-based utility. The default is admin.Router Password  Enter a new password for the Router.Re-enter  to  confirm  Enter  the  password  again  to confirm.Local Management AccessAccess  via  HTTP  (HyperText  Transport  Protocol)  is  the communications protocol used to connect to servers on the  World  Wide  Web.  HTTPS  uses  SSL  (Secured  Socket Layer)  to  encrypt  data  transmitted  for  higher  security. Select HTTP or HTTPS. HTTP is the default.Access via Wireless  If you are using the Router in a public domain  where  you  are  giving  wireless  access  to  your guests,  you  can  disable  wireless  access  to  the  Router’s browser-based utility. You will only be able to access the utility  via a  wired connection  if you  disable  the  setting. Keep the default, Enabled, to allow wireless access to the utility, or select Disabled to block wireless access to the utility.Remote Management AccessRemote  Management  To  permit  remote  access  of  the Router, from  outside the  local  network,  select  Enabled. Otherwise, keep the default, Disabled.Access  via HTTP  (HyperText  Transport  Protocol)  is  the communications protocol used to connect to servers on the  World  Wide  Web.  HTTPS  uses  SSL  (Secured  Socket Layer)  to  encrypt  data  transmitted  for  higher  security. Select HTTP or HTTPS. HTTP is the default.Remote Upgrade  If you want to be able to upgrade the Router  remotely,  from  outside  the  local  network,  select Enabled.  (You  must  have  the  Remote  Management feature  enabled  as  well.)  Otherwise,  keep  the  default, Disabled.Allowed Remote  IP  Address  If  you want to be  able  to access the Router from any external IP address, select Any IP Address. If you want to specify an external IP address or range of IP addresses, then select the second option and complete the fields provided.Remote Management Port  Enter the port number that will be open to outside access.NOTE:  When  you  are  in  a  remote  location and  wish  to  manage  the  Router,  enter  http://xxx.xxx.xxx.xxx:yyyy  or https://xxx.xxx.xxx.xxx:yyyy,  depending on whether you use HTTP or HTTPS. Enter the Router’s  specific  Internet  IP  address  in  place of  xxx.xxx.xxx.xxx,  and  enter  the  Remote Management Port number in place of yyyy.UPnPUniversal  Plug  and  Play  (UPnP)  allows  the  appropriate Windows operating system to automatically configure the Router for various Internet applications, such as gaming and videoconferencing.
Chapter 3 Advanced Configuration24Wireless-N Home RouterUPnP  To use UPnP, keep the default, Enabled. Otherwise, select Disabled.Allow  Users  to  Configure  Keep  the  default,  Enabled, if  you  want to  be able  to  make  manual  changes to  the Router  while  using  the  UPnP  feature.  Otherwise,  select Disabled.Allow Users to Disable Internet Access  Select Enabled, if  you  want  to  be  able  to  prohibit  any  and  all  Internet connections. Otherwise, keep the default, Disabled.Backup and RestoreBackup  Configuration  To  back  up  the  Router’s configuration  settings,  click  this  button  and  follow  the on-screen instructions.Restore  Configuration  To  restore  the  Router’s configuration  settings,  click  this  button  and  follow  the on-screen instructions. (You must have previously backed up the Router’s configuration settings.)System RebootStart to  Reboot  If  you  need to restart  the Router, click this button.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Administration > LogThe  Router  can  keep  logs  of  all  traffic  for your  Internet connection.Administration > LogLogEnabled/Disabled  To  disable  the  Log  function,  select Disabled. To monitor traffic between the network and the Internet, keep the default, Enabled. With logging enabled, you can choose to view temporary logs.View Log  To view the logs, click View Log. Log > View LogLog •Type  Select Incoming Log, Outgoing Log, Security Log, or DHCP Client Log.  •<Type> Log  The Incoming Log displays a temporary log  of  the  source  IP  addresses  and  destination port  numbers  for  the  incoming  Internet  traffic.  The Outgoing Log displays a temporary log of the local IP addresses, destination URLs/IP addresses, and service/port  numbers  for  the  outgoing  Internet  traffic.  The Security  log  displays  the  login  information  for  the browser-based  utility.  The  DHCP  Client  Log  displays the LAN DHCP server status information.Click Save the Log to save this information to a file on your computer’s  hard drive. Click  Refresh to  update the log. Click Clear to clear all the information that is displayed.Click Save Settings to apply your changes, or click Cancel Changes to clear your changes.Administration > DiagnosticsThe  diagnostic tests  (Ping  and Traceroute)  allow you  to check the connections of your network devices, including connection to the Internet.Administration > Diagnostics
Chapter 3 Advanced Configuration25Wireless-N Home RouterDiagnosticsPing TestPing checks the status of a connection. IP  or  URL  Address  Enter  the  address  of  the  computer whose connection you wish to test.Packet Size  Enter the packet  size you want to use. The default is 32 bytes.Number to Ping  Enter the number of times you wish to test the connection. The default is 5.Start to Ping  To run the test, click this button. The Ping screen shows if the test is successful. Click Close to return to the Diagnostics screen. Diagnostics > PingTraceroute TestTraceroute checks the performance of a connection.IP  or  URL  Address  Enter  the  address  of  the  computer whose connection you wish to test.Start to Traceroute  To run the test, click this button. The Traceroute screen shows if the test is successful. Click Close to return to the Diagnostics screen. Diagnostics > TracerouteAdministration > Factory DefaultsRestore the Router to its factory default settings.Administration > Factory DefaultsNOTE: Do not restore the factory defaults unless you are having difficulties with the Router and have  exhausted  all  other  troubleshooting measures. Once the Router is reset, you will have to re-enter all of your configuration settings.Factory DefaultsRestore All Settings  To reset the Router’s settings to the defaults, click this button and then follow the on-screen instructions. Any custom settings you have saved will be lost when the default settings are restored.Administration > Firmware UpgradeThe  Firmware  Upgrade  screen  allows  you  to upgrade  the Router’s  firmware.  Do  not  upgrade  the  firmware  unless you are experiencing problems with the Router or the new firmware has a feature you want to use. Administration > Firmware UpgradeNOTE:  The  Router  may  lose  the  settings  you have  customized.  Before  you  upgrade  its firmware, write down all of your custom settings. After you upgrade its firmware, you may have to re-enter all of your configuration settings.
Chapter 3 Advanced Configuration26Wireless-N Home RouterFirmware UpgradeBefore  upgrading  the  firmware,  download  the  Router’s firmware  upgrade  file  from  the  Linksys  website,  www.linksysbycisco.com.Please select  a  file to  upgrade  To select  the  firmware upgrade  file,  click  Browse  and  follow  the  on-screen instructions.Start  to  Upgrade  After  you  have  selected  the appropriate file, click this button, and follow the on-screen instructions. WARNING:  The  firmware  upgrade  must  not be interrupted; do not reboot or power off the Router during the firmware upgrade.Status > RouterThe Router screen displays information about the Router and its current settings.Status > RouterRouter InformationFirmware Version  The  version  number  of  the  Router’s current firmware is displayed.Boot Code Version  The version number of the Router’s boot code is displayed.Firmware  Verification  The  unique  identifier  of  the firmware is displayed.Current Time  The time set on the Router is displayed.Internet  MAC  Address  The  Router’s  MAC  Address,  as seen by your ISP, is displayed.Host Name  The Host Name of the Router is displayed (if it was entered on the Setup > Basic Setup screen).Domain  Name  The  Domain  Name  of  the  Router  is displayed  (if  it  was  entered  on  the  Setup  >  Basic  Setup screen).Internet ConnectionThis  section  shows  the  current  network  information stored in the Router. The information varies depending on the Internet connection type selected on the Setup > Basic Setup screen.Select  Release  IP  Address  or  Renew  IP  Address  as appropriate to release or renew a DHCP lease.Click Refresh to update the on-screen information.Status > Local NetworkThe Local Network screen displays information about the local, wired network.Status > Local NetworkLocal NetworkLocal  MAC  Address  The  MAC  address  of  the  Router’s local, wired interface is displayed.Router IP Address  The Router’s IP address, as it appears on your local network, is displayed.Subnet  Mask  The  Subnet  Mask  of  the  Router  is displayed.DHCP ServerDHCP  Server  The  status  of  the  Router’s  DHCP  server function is displayed.Start IP Address  For the range of IP addresses that can be used by devices on your local network, the starting IP address is displayed.End IP  Address  For the  range of  IP addresses  that can be used by devices on your local network, the ending IP address is displayed.DHCP  Clients Table  Click  this  button  to  view  a  list  of computers or other devices that are using the Router as a DHCP server.
Chapter 3 Advanced Configuration27Wireless-N Home RouterDHCP Clients TableDHCP Client TableThe  DHCP  Client  Table  lists  computers  and  other devices that have been assigned IP addresses by the Router.  The  list  can  be  sorted  by  IP  Address,  MAC Address,  Interface,  and  Client  Name.  To  remove  a DHCP  client,  click  Delete.  To  update  the  on-screen information,  click  Refresh.  To  exit  this  screen  and return to the Local Network screen, click Close. Status > Wireless NetworkThe  Wireless  Network  screen  displays  information  about your wireless network.Status > WirelessWireless NetworkMAC  Address  The  MAC  address  of  the  Router’s  local, wireless interface is displayed.Mode  The  wireless  mode  used  by  the  network  is displayed.Network Name (SSID)  The name of the wireless network, which is also called the SSID, is displayed.Channel Width  The Channel Width setting (selected on the Wireless > Basic Wireless Settings screen) is displayed.Wide  Channel  The  Wide  Channel  setting  (selected  on the Wireless > Basic Wireless Settings screen) is displayed.Standard  Channel  The  Standard  Channel  setting (selected on the Wireless > Basic Wireless Settings screen) is displayed.Security  The wireless security method used by the Router is displayed.SSID Broadcast  The status of the SSID Broadcast feature is displayed.
Appendix A Troubleshooting28Wireless-N Home RouterAppendix A:  TroubleshootingYour computer cannot connect to the Internet. Follow these instructions until your computer can connect to the Internet: •Make sure that the Router is powered on. The Power LED should be lit and not flashing. •If  the  Power  LED  is  flashing,  then  power  off  all  of your network devices, including the modem, Router, and  computers. Then  power  on  each  device  in  the following order:1.  Cable or DSL modem2.  Router3.  Computer •Check  the cable  connections. The  computer should be connected to one of the ports numbered 1-4 on the Router, and the modem must be connected to the Internet port on the Router.The modem does not have an Ethernet port.The  modem  is  a  dial-up  modem  for  traditional  dial-up service. To use the Router, you need a cable/DSL modem and high-speed Internet connection.You cannot use the DSL service to connect manually to the Internet.After you have installed  the  Router,  it will automatically connect to your Internet Service Provider (ISP), so you no longer need to connect manually.The  DSL  telephone  line  does  not  fit  into  the  Router’s Internet port.The Router does not replace your modem. You still need your DSL modem in order to use the Router. Connect the telephone  line  to  the  DSL  modem,  and  then  insert  the setup CD into your computer. Click Setup and follow the on-screen instructions.When  you  double-click  the  web  browser,  you  are prompted for a username and password. If you want to get rid of the prompt, follow these instructions.Launch the web browser and perform the following steps (these steps are specific to Internet Explorer but are similar for other browsers):1.  Select Tools > Internet Options. 2.  Click the Connections tab.3.  Select Never dial a connection. 4.  Click OK.The  Router  does  not  have a  coaxial  port  for  the  cable connection.The Router does not replace your modem. You still need your  cable  modem  in  order  to  use the  Router.  Connect your  cable  connection  to  the  cable  modem,  and  then insert the setup CD into your computer. Click Setup and follow the on-screen instructions.The computer cannot connect wirelessly to the network.Make sure the wireless network name or SSID is the same on both the computer and the Router. If you have enabled wireless  security,  then  make  sure  the  same  security method and key are used by both the computer and the Router.You need to modify the settings on the Router.Open the web browser (for example, Internet Explorer or Firefox), and enter the Router’s IP address in the address field  (the  default  IP  address  is  192.168.1.1).  When prompted, enter the password to the Router (the default is admin). Click the appropriate tab to change the settings.WEB:  If  your  questions  are  not  addressed here,  refer  to  the  Linksys  website, www.linksysbycisco.com
Appendix B Specifications29Wireless-N Home RouterAppendix B:  SpecificationsModel  WRT120NStandards  IEEE 802.3u, 802.11g, 802.11b,    Draft 802.11nLEDs  Power, Internet, Wireless, Wi-Fi    Protected Setup™, Ethernet (1-4)Ports  Internet, Ethernet (1-4), PowerButtons  Reset, Wi-Fi Protected Setup™Cabling Type  Cat 5# of Antennas  2 (internal)Detachable (y/n)  NoModulations  802.11b: CCK/QPSK, BPSK    802.11g: OFDM/BPSK, QPSK,    16-QAM, 64-QAM   802.11n: OFDM/BPSK, QPSK,    16-QAM, 64-QAM Transmitted Power  in dBm  802.11b: 16.5 ± 1.5 dBm (typical)   802.11g: 13.5 ± 1.5 dBm (typical)   802.11n: 13.5 ± 1.5 dBm (typical)Receive Sensitivity  in dBm  -94 dBm (typical) @ 1 Mbps   -90 dBm (typical) @ 11 Mbps   -75 dBm (typical) @ 54 Mbps   -66 dBm (typical) @ 270 MbpsAntenna Gain in dBi  2.0 (max)UPnP able/cert  AbleWireless Security  Wi-Fi Protected Access™ 2 (WPA2),    WEP, Wireless MAC FilteringSecurity Key Bits  Up to 128-Bit EncryptionOS Requirements  Windows XP, Vista, or Vista 64-Bit    Edition with Latest Updates (for    Network Magic and Setup Wizard)   Mac OS X 10.4 or higher (for    Setup Wizard)EnvironmentalDimensions  7.99" x 1.38" x 6.30"   (203 x 35 x 160 mm)Unit Weight  8.4 oz (238 g)Power  12V, 1ACertifications  FCC, UL/cUL, ICES-003, RSS210, CE,    Wi-Fi (IEEE 802.11b/g), WPA2™,    WMM®, Wi-Fi Protected Setup™Operating Temp.  0 to 40°C (32 to 104°F)Storage Temp.  -20 to 60°C (-4 to 140°F)Operating Humidity  10 to 80%, NoncondensingStorage Humidity  5 to 90% NoncondensingSpecifications are subject to change without notice.
Appendix C Warranty Information30Wireless-N Home RouterAppendix C:  Warranty InformationLimited WarrantyLinksys  warrants  this  Linksys  hardware  product  against defects  in  materials  and  workmanship  under  normal use for the Warranty Period, which begins on the date of purchase by the original end-user purchaser and lasts for the period specified below: •One (1) year for new product •Ninety (90) days for refurbished productYour  exclusive remedy and Linksys’  entire liability under this limited warranty will be for Linksys, at its option, to (a)  repair  the  product  with  new  or  refurbished  parts, (b)  replace  the  product  with  a  reasonably  available equivalent new or refurbished Linksys product, or (c) refund the purchase  price of the  product  less any rebates. Any repaired or  replacement  products  will  be warranted  for the remainder of the original Warranty Period or thirty (30) days, whichever is longer. All products and parts that are replaced become the property of Linksys.Linksys  additionally  warrants  that  any  media  on  which the software may be provided will be free from defects in materials and workmanship under normal use for a period of  ninety  (90)  days  from  the  date  of  original  purchase.  Your  exclusive remedy and Linksys’  entire liability under this limited warranty will be for Linksys, at its option, to (a) replace the software media, or (b) refund the purchase price of the software media.Exclusions and LimitationsThis  limited  warranty  does  not  apply  if:  (a) the  product assembly  seal  has  been  removed  or  damaged,  (b)  the product has been altered or modified, except by Linksys, (c)  the  product  damage  was  caused  by  use  with  non-Linksys products, (d) the product has not been installed, operated,  repaired,  or  maintained  in  accordance  with instructions  supplied  by  Linksys,  (e)  the  product  has been subjected to abnormal physical or electrical stress, misuse, negligence, or accident, (f) the serial number on the  Product  has  been  altered,  defaced,  or  removed,  or (g) the product is supplied or licensed for beta, evaluation, testing or demonstration purposes for which Linksys does not charge a purchase price or license fee.EXCEPT FOR THE LIMITED WARRANTY ON MEDIA SET FORTH ABOVE  AND  TO THE  MAXIMUM  EXTENT  PERMITTED  BY APPLICABLE LAW, ALL SOFTWARE PROVIDED BY LINKSYS WITH THE PRODUCT, WHETHER FACTORY LOADED ON THE PRODUCT  OR  CONTAINED  ON  MEDIA  ACCOMPANYING THE PRODUCT, IS PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND. Without limiting the foregoing, Linksys does not warrant that the operation of the product or software will  be  uninterrupted  or  error  free.  Also,  due  to  the continual development of new techniques for intruding upon and  attacking  networks, Linksys does  not warrant that the product, software or any equipment, system or network on which the product or software is used will be free  of  vulnerability  to  intrusion  or  attack.  The  product may include or be bundled with third party software or service offerings. This limited warranty shall not apply to such third party software or service offerings. This limited warranty  does  not  guarantee  any  continued  availability of a  third party’s  service  for  which this  product’s use  or operation may require. TO  THE  EXTENT  NOT  PROHIBITED  BY  APPLICABLE LAW,  ALL  IMPLIED  WARRANTIES  AND  CONDITIONS OF  MERCHANTABILITY,  SATISFACTORY  QUALITY  OR FITNESS  FOR  A  PARTICULAR  PURPOSE  ARE  LIMITED  TO THE  DURATION  OF THE WARRANTY  PERIOD.  ALL OTHER EXPRESS  OR  IMPLIED  CONDITIONS,  REPRESENTATIONS AND  WARRANTIES  ARE  DISCLAIMED.  Some  jurisdictions do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. This limited warranty gives you specific legal rights, and you may also have other rights which vary by jurisdiction.TO  THE  EXTENT  NOT  PROHIBITED  BY  APPLICABLE  LAW, IN  NO  EVENT  WILL  LINKSYS  BE  LIABLE  FOR  ANY  LOST DATA,  REVENUE  OR  PROFIT,  OR  FOR  SPECIAL,  INDIRECT, CONSEQUENTIAL,  INCIDENTAL  OR  PUNITIVE  DAMAGES, REGARDLESS  OF THE THEORY  OF  LIABILITY  (INCLUDING NEGLIGENCE), ARISING OUT OF OR RELATED TO THE USE OF  OR INABILITY TO USE THE  PRODUCT,  SOFTWARE OR ANY SERVICES PROVIDED IN RESPECT OF SUCH PRODUCT OR SOFTWARE, EVEN IF LINKSYS HAS BEEN ADVISED  OF THE  POSSIBILITY  OF  SUCH  DAMAGES.   TO  THE  EXTENT NOT PROHIBITED BY APPLICABLE LAW, IN NO EVENT WILL LINKSYS’  LIABILITY  EXCEED  THE  AMOUNT  PAID  BY  YOU FOR THE PRODUCT.  The foregoing limitations will apply even if any warranty or remedy provided under this limited warranty fails of its essential purpose. Some jurisdictions do  not  allow  the  exclusion  or  limitation  of  incidental or  consequential  damages,  so  the  above  limitation  or exclusion may not apply to you.Obtaining Warranty ServiceIf  you  have  a  question  about  your  product or  experience  a  problem  with  it,  please  go  to www.linksysbycisco.com/support where you will find a variety of online support tools and information to assist you  with  your  product.  If  the  product  proves  defective during  the  Warranty  Period,  contact  Linksys  Technical Support for instructions on how to obtain warranty service. The  telephone  number  for  Linksys Technical  Support  in your  area  can  be  found  in  the  product  User  Guide  and at  www.linksysbycisco.com.  Have  your  product  serial number and proof of purchase on hand when calling. A
Appendix C Warranty Information31Wireless-N Home RouterDATED PROOF OF ORIGINAL PURCHASE IS REQUIRED TO PROCESS  WARRANTY  CLAIMS.  If  you  are  requested  to return your product, you will be given a Return Materials Authorization  (RMA)  number.  You  are  responsible  for properly packaging and shipping your product to Linksys at your cost and risk. You must include the RMA number and a copy of your dated proof of original purchase when returning your product. Products received without a RMA number  and  dated  proof  of  original  purchase  will  be rejected. Do not include any other items with the product you are returning to  Linksys. Defective  product  covered by this limited warranty will be repaired or replaced and returned  to  you  without  charge.  Customers  outside  of the United States of America and Canada are responsible for  all  shipping  and  handling  charges,  custom  duties, VAT  and  other  associated  taxes  and  charges.  Repairs  or replacements not covered under this limited warranty will be subject to charge at Linksys’ then-current rates.Technical SupportThis  limited  warranty  is  neither  a  service  nor  a support  contract.    Information  about  Linksys’  current technical  support  offerings  and  policies  (including any  fees  for  support  services)  can  be  found  at www.linksysbycisco.com/support.This  limited  warranty  is  governed  by  the  laws  of  the jurisdiction in which the Product was purchased by you.Please direct all inquiries to: Linksys, P.O. Box 18558, Irvine, CA 92623.

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