D Link IR665A1 Xtreme N 450 Dual Band Gigabit Router User Manual UserMan 2 KA2IR665A1

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Section 3 - Configuration
Firewall Settings
A firewall protects your network from the outside world. The D-Link DIR-665 offers a firewall type functionality. The SPI
feature helps prevent cyber attacks. Sometimes you may want a computer exposed to the outside world for certain
types of applications. If you choose to expose a computer, you cam enable DMZ. DMZ is short for Demilitarized Zone.
This option will expose the chosen computer completely to the outside world.
Enable SPI: SPI (Stateful Packet Inspection, also known as dynamic packet
filtering) helps to prevent cyber attacks by tracking more state per
session. It validates that the traffic passing through the session
conforms to the protocol.
NAT Endpoint Select one of the following for TCP and UDP ports:
Filtering: Endpoint Independent - Any incoming traffic sent to an open port
will be forwarded to the application that opened the port. The port
will close if idle for 5 minutes.
Address Restricted - Incoming traffic must match the IP address
of the outgoing connection.
Address + Port Restriction - Incoming traffic must match the IP
address and port of the outgoing connection.
Enable DMZ Host: If an application has trouble working from behind the router, you
can expose one computer to the Internet and run the application
on that computer.
Note: Placing a computer in the DMZ may expose that computer to
a variety of security risks. Use of this option is only recommended
as a last resort.
IP Address: Specify the IP address of the computer on the LAN that you want to have unrestricted Internet communication. If this
computer obtains it’s IP address automatically using DHCP, be sure to make a static reservation on the Basic > DHCP
page so that the IP address of the DMZ machine does not change.
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Section 3 - Configuration
Application Level Gateway (ALG) Configuration
Here you can enable or disable ALG’s. Some protocols and applications require special handling of the IP payload to
make them work with network address translation (NAT). Each ALG provides special handling for a specific protocol
or application. A number of ALGs for common applications are enabled by default.
PPTP: Allows multiple machines on the LAN to connect to their corporate network using PPTP protocol.
IPSEC (VPN): Allows multiple VPN clients to connect to their corporate network using IPSec. Some VPN clients support traversal of IPSec
through NAT. This ALG may interfere with the operation of such VPN clients. If you are having trouble connecting with your
corporate network, try turning this ALG off. Please check with the system adminstrator of your corporate network whether
your VPN client supports NAT traversal.
RTSP: Allows applications that use Real Time Streaming Protocol to receive streaming media from the internet. QuickTime and
Real Player are some of the common applications using this protocol.
SIP: Allows devices and applications using VoIP (Voice over IP) to communicate across NAT. Some VoIP applications and devices
have the ability to discover NAT devices and work around them. This ALG may interfere with the operation of such devices.
If you are having trouble making VoIP calls, try turning this ALG off.
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Section 3 - Configuration
Routing
The Routing option is an advanced method of customizing specific routes of data through your network.
Destination IP: Enter the IP address of packets that will take
this route.
Netmask: Enter the netmask of the route, please note
that the octets must match your destination IP
address.
Gateway: Enter your next hop gateway to be taken if this
route is used.
Metric: The route metric is a value from 1 to 16 that
indicates the cost of using this route. A value 1
is the lowest cost and 15 is the highest cost.
Interface: Select the interface that the IP packet must
use to transit out of the router when this route
is used.
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Section 3 - Configuration
Advanced Wireless Settings
Transmit Power
Mode
Transmit Power: Set the transmit power of the antennas.
Beacon Period: Beacons are packets sent by an Access Point
to synchronize a wireless network. Specify
a value. 100 is the default setting and is
recommended.
RTS Threshold: This value should remain at its default setting of
2432. If inconsistent data flow is a problem, only
a minor modification should be made.
DTIM Interval: (Delivery Traffic Indication Message) 3 is the
default setting. A DTIM is a countdown informing
clients of the next window for listening to
broadcast and multicast messages.
WMM Function: WMM is QoS for your wireless network. This will
improve the quality of video and voice applications for your wireless clients.
WMM Enable: Check box if you wish to enable this feature.
Short GI: Check this box to reduce the guard interval time therefore increasing the data capacity. However, it’s less reliable and may
create higher data loss.
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Section 3 - Configuration
Advanced Network Settings
UPnP Settings: To use the Universal Plug and Play (UPnP™)
feature click on Enabled. UPNP provides
compatibility with networking equipment, software
and peripherals.
Internet Ping: Unchecking the box will not allow the DIR-665 to
respond to pings. Blocking the Ping may provide
some extra security from hackers. Check the box
to allow the Internet port to be “pinged”.
Internet Port You may set the port speed of the Internet port
Speed: to 10Mbps, 100Mbps, or auto. Some older cable
or DSL modems may require you to set the port
speed to 10Mbps.
UPnP
Internet Ping Block
Internet Port Speed
Multicast Streams
Multicast Check the box to allow multicast traffic to pass
streams: through the router from the Internet.
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Section 3 - Configuration
Administrator Settings
This page will allow you to change the Administrator and User passwords. You can also enable Remote Management.
There are two accounts that can access the management interface through the web browser. The accounts are admin
and user. Admin has read/write access while user has read-only access. User can only view the settings but cannot
make any changes. Only the admin account has the ability to change both admin and user account passwords.
Admin Password: Enter a new password for the Administrator Login Name. The
administrator can make changes to the settings.
User Password: Enter the new password for the User login. If you login as
the User, you can only see the settings, but cannot change
them.
Gateway Name: Enter a name for the DIR-665 router.
Enable Graphical Enables a challenge-response test to require users to type
Authentication: letters or numbers from a distorted image displayed on the
screen to prevent online hackers and unauthorized users
from gaining access to your router’s network settings.
Enable Remote Remote management allows the DIR-665 to be configured
Management: from the Internet by a web browser. A username and
password is still required to access the Web-Management
interface. In general, only a member of your network can
browse the built-in web pages to perform Administrator tasks.
This feature enables you to perform Administrator tasks from
the remote (Internet) host.
Remote Admin The port number used to access the DIR-665.
Port: Example: http://x.x.x.x:8080 whereas x.x.x.x is the Internet IP address of the DIR-665 and 8080 is the port used for the Web
Management interface.
Change Password
Remote Management
Inbound Filter: This section will list any rules that are created. You may click the Edit icon to change the settings or enable/disable the rule,
or click the Delete icon to remove the rule.
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Section 3 - Configuration
Time Settings
The Time Configuration option allows you to configure, update, and maintain the correct time on the internal system
clock. From this section you can set the time zone that you are in and set the Time Server. Daylight Saving can also
be configured to automatically adjust the time when needed.
Time Zone: Select the Time Zone from the drop-down
menu.
Daylight Saving: To select Daylight Saving time manually, select
enabled or disabled, and enter a start date and
an end date for daylight saving time.
Enable NTP NTP is short for Network Time Protocol. NTP
Server: synchronizes computer clock times in a network
of computers. Check this box to use a NTP
server. This will only connect to a server on the
Internet, not a local server.
NTP Server Used: Enter the NTP server or select one from the
drop-down menu.
Manual: To manually input the time, enter the values
in these fields for the Year, Month, Day, Hour,
Minute, and Second and then click Set Time.
You can also click Copy Your Computer’s Time
Settings.
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Section 3 - Configuration
SysLog
The Broadband Router keeps a running log of events and activities occurring on the Router. You may send these logs
to a SysLog server on your network.
Enable Logging to Check this box to send the router logs to a
SysLog Server: SysLog Server.
SysLog Server IP The address of the SysLog server that will be
Address: used to send the logs. You may also select
your computer from the drop-down menu (only
if receiving an IP address from the router via
DHCP).
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Section 3 - Configuration
Email Settings
The Email feature can be used to send the system log files, router alert messages, and firmware update notification
to your email address.
Enable Email When this option is enabled, router activity logs
Notification: are e-mailed to a designated email address.
From Email This email address will appear as the sender
Address: when you receive a log file or firmware upgrade
notification via email.
To Email Address: Enter the email address where you want the
email sent.
SMTP Server Enter the SMTP server address for sending email.
Address: If your SMTP server requires authentication,
select this option.
Enable Check this box if your SMTP server requires
Authentication: authentication.
Account Name: Enter your account for sending email.
Password: Enter the password associated with the account.
Re-type the password associated with the
account.
On Log Full: When this option is selected, logs will be sent
via email when the log is full.
On Schedule: Selecting this option will send the logs via email according to schedule.
This option is enabled when On Schedule is selected. You can select a schedule from the list of defined schedules. To create
Schedule: a schedule, go to Tools > Schedules.
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Section 3 - Configuration
System Settings
Save Settings to Use this option to save the current router
Local Hard Drive: configuration settings to a file on the hard disk
of the computer you are using. First, click the
Save button. You will then see a file dialog,
where you can select a location and file name
for the settings.
Load Settings Use this option to load previously saved
from Local Hard router configuration settings. First, use the
Drive: Browse control to find a previously save file
of configuration settings. Then, click the Load
button to transfer those settings to the router.
Restore to Factory This option will restore all configuration settings
Default Settings: back to the settings that were in effect at the
time the router was shipped from the factory.
Any settings that have not been saved will be
lost, including any rules that you have created. If
you want to save the current router configuration
settings, use the Save button above.
Reboot Device: Click to reboot the router.
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Section 3 - Configuration
Update Firmware
You can upgrade the firmware of the Router here. Make sure the firmware you want to use is on the local hard drive of
the computer. Click on Browse to locate the firmware file to be used for the update. Please check the D-Link support
site for firmware updates at http://support.dlink.com. You can download firmware upgrades to your hard drive from the
D-Link support site.
Firmware Click on Check Online Now for Latest Firmware
Upgrade: Version to find out if there is an updated firmware;
if so, download the new firmware to your hard
drive.
Browse: After you have downloaded the new firmware,
click Browse to locate the firmware update on
your hard drive. Click Upload to complete the
firmware upgrade.
Notifications Check Automatically Check Online for Latest
Options: Firmware Version to have the router check
automatically to see if there is a new firmware
upgrade.
Check Email Notification of Newer Firmware
Version to have the router send an email when
there is a new firmware available.
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Section 3 - Configuration
DDNS
The DDNS feature allows you to host a server (Web, FTP, Game Server, etc…) using a domain name that you have
purchased (www.whateveryournameis.com) with your dynamically assigned IP address. Most broadband Internet
Service Providers assign dynamic (changing) IP addresses. Using a DDNS service provider, your friends can enter in
your domain name to connect to your server no matter what your IP address is.
DDNS: Dynamic Domain Name System is a method of
keeping a domain name linked to a changing IP
Address. Check the box to enable DDNS.
Server Address: Choose your DDNS provider from the drop
down menu.
Host Name: Enter the Host Name that you registered with
your DDNS service provider.
Username or Key: Enter the Username for your DDNS account.
Password or Key: Enter the Password for your DDNS account.
Timeout: Enter a time (in hours).
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Section 3 - Configuration
System Check
Ping Test: The Ping Test is used to send Ping packets
to test if a computer is on the Internet. Enter
the IP Address that you wish to Ping, and
click Ping.
Ping Results: The results of your ping attempts will be
displayed here.
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Section 3 - Configuration
Schedules
Name: Enter a name for your new schedule.
Days: Select a day, a range of days, or All Week to
include every day.
Time: Check All Day - 24hrs or enter a start and
end time for your schedule.
Save: Click Save to save your schedule. You
must click Save Settings at the top for your
schedules to go into effect.
Schedule Rules The list of schedules will be listed here. Click
List: the Edit icon to make changes or click the
Delete icon to remove the schedule.
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Section 3 - Configuration
Device Information
This page displays the current information for the DIR-665. It will display the LAN, WAN (Internet), and Wireless
information.
If your Internet connection is set up for a Dynamic IP address then a Release button and a Renew button will be
displayed. Use Release to disconnect from your ISP and use Renew to connect to your ISP.
If your Internet connection is set up for PPPoE, a Connect button
and a Disconnect button will be displayed. Use Disconnect to drop
the PPPoE connection and use Connect to establish the PPPoE
connection.
General: Displays the router’s time and firmware version.
WAN: Displays the MAC address and the public IP settings for the
router.
LAN: Displays the MAC address and the private (local) IP settings for
the router.
Wireless LAN: Displays the wireless MAC address and your wireless settings
such as SSID and Channel.
LAN Computers: Displays computers and devices that are connected to the router
via Ethernet and that are receiving an IP address assigned by the
router (DHCP).
IGMP Multicast Displays the Multicast Group IP Address.
Memberships:
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Section 3 - Configuration
Log
The router automatically logs (records) events of possible interest in it’s internal memory. If there isn’t enough internal
memory for all events, logs of older events are deleted but logs of the latest events are retained. The Logs option allows
you to view the router logs. You can define what types of events you want to view and the level of the events to view.
This router also has external Syslog Server support so you can send the log files to a computer on your network that
is running a Syslog utility.
What to View: You can select the types of messages that you want
to display from the log. Firewall & Security, System,
and Router Status messages can be selected.
View Levels: There are three levels of message importance:
Informational, Warning, and Critical. Select the
levels that you want displayed in the log.
Apply Log Will filter the log results so that only the selected
Settings: options appear.
Refresh: Updates the log details on the screen so it displays
any recent activity.
Clear: Clears all of the log contents.
Email Now: This option will send a copy of the router log to
the email address configured in the Tools > Email
screen.
Save Log: This option will save the router to a log file on your
computer.
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Section 3 - Configuration
Statistics
The screen below displays the Traffic Statistics. Here you can view the amount of packets that pass through the DIR-665 on
both the Internet and the LAN ports. The traffic counter will reset if the device is rebooted.
Internet Sessions
This screen displays details of the active internet sessions connected to your router.
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Section 3 - Configuration
Routing
This screen displays the routing details configured from your router.
Wireless
The wireless client table displays a list of current connected wireless clients. This table also displays the connection
time and MAC address of the connected wireless clients.
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Section 3 - Configuration
Support
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Section 4 - Security
Wireless Security
This section will show you the different levels of security you can use to protect your data from intruders. The
DIR-665 offers the following types of security:
• WPA2 (Wi-Fi Protected Access 2) 		
• WPA (Wi-Fi Protected Access)			
• WPA2-PSK (Pre-Shared Key)
• WPA-PSK (Pre-Shared Key)
What is WPA?
WPA, or Wi-Fi Protected Access, is a Wi-Fi standard that was designed to improve the security features of WEP (Wired
Equivalent Privacy).
The 2 major improvements over WEP:
• Improved data encryption through the Temporal Key Integrity Protocol (TKIP). TKIP scrambles the keys
using a hashing algorithm and, by adding an integrity-checking feature, ensures that the keys haven’t
been tampered with. WPA2 is based on 802.11i and uses Advanced Encryption Standard (AES) instead
of TKIP.
• User authentication, which is generally missing in WEP, through the extensible authentication protocol
(EAP). WEP regulates access to a wireless network based on a computer’s hardware-specific MAC
address, which is relatively simple to be sniffed out and stolen. EAP is built on a more secure public-key
encryption system to ensure that only authorized network users can access the network.
WPA-PSK/WPA2-PSK uses a passphrase or key to authenticate your wireless connection. The key is an alpha-numeric
password between 8 and 63 characters long. The password can include symbols (!?*&_) and spaces. This key must
be the exact same key entered on your wireless router or access point.
WPA/WPA2 incorporates user authentication through the Extensible Authentication Protocol (EAP). EAP is built on a
more secure public key encryption system to ensure that only authorized network users can access the network.
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Section 4 - Security
Wireless Security Setup Wizard
To run the security wizard, click on Setup at the top and then
click Launch Wireless Security Setup Wizard.
Enter the SSID (Service Set Identifier) name for your network.
You may also create a name using up to 32 characters.
The SSID is also case sensitive. Select from the following
choices:
• Automatically assign a network key
• Manually assign a network key
Click Next to continue.
The Setup is now complete. Keep the information provided
for future reference. Click Save to finish.
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Section 4 - Security
Enter the SSID (Service Set Identifier). The SSID is the
name of your wireless network. Create a name using up to
32 characters. The SSID is case-sensitive. If you selected to
Manually assign a network key, click Next to continue.
Select a wireless security password between 8 and 63
characters.
Click Next to continue.
Your setup is now complete. Print the information provided
or write on a piece of paper to configure the correct settings.
Click Save to finish.
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Section 4 - Security
If you selected Better, the following screen will show you your
Pre-Shared Key to enter on your wireless clients.
Click Save to finish the Security Wizard.
If you selected Best, the following screen will show you your
Pre-Shared Key to enter on your wireless clients.
Click Save to finish the Security Wizard.
If you selected WPA-Enterprise, the RADIUS information will be displayed. Click Save to finish the Security Wizard.
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Section 4 - Security
Wireless Device with WPS Wizard
From the Setup > Wireless Settings screen, click Add
Wireless Device with WPS.
Select Auto to add a wireless client using WPS (Wi-Fi Protected
Setup). Once you select Auto and click Connect, you will have
a 120 second time limit to apply the settings to your wireless
client(s) and successfully establish a connection.
If you select Manual, a settings summary screen will appear.
Write down the security key and enter this on your wireless
clients.
PIN: Select this option to use PIN method. In order to use
this method you must know the wireless client’s 8 digit PIN
and click Connect.
PBC: Select this option to use PBC (Push Button) method to
add a wireless client. Click Connect.
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Section 4 - Security
Configure WPA-Personal (PSK)
It is recommended to enable encryption on your wireless router before your wireless network adapters. Please establish
wireless connectivity before enabling encryption. Your wireless signal may degrade when enabling encryption due to
the added overhead.
1. Log into the web-based configuration by opening a web browser
and entering the IP address of the router (192.168.0.1). Click
on Setup and then click Wireless Settings on the left side.
2. Next to Security Mode, select WPA-Personal.
3. Next to WPA Mode, select Auto, WPA2 Only, or WPA Only.
Use Auto if you have wireless clients using both WPA and
WPA2.
4. Next to Group Key Update Interval, enter the amount of time
before the group key used for broadcast and multicast data
is changed (3600 is default).
5. Next to Pre-Shared Key, enter a key (passphrase). The key
is entered as a pass-phrase in ASCII format at both ends of
the wireless connection. The pass-phrase must be between
8-63 characters.
6. Click Save Settings to save your settings. If you are configuring the router with a wireless adapter, you will lose
connectivity until you enable WPA-PSK on your adapter and enter the same passphrase as you did on the router.
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Section 4 - Security
Configure WPA-Enterprise (RADIUS)
It is recommended to enable encryption on your wireless router before your wireless network adapters. Please establish
wireless connectivity before enabling encryption. Your wireless signal may degrade when enabling encryption due to
the added overhead.
1. Log into the web-based configuration by opening a web browser
and entering the IP address of the router (192.168.0.1). Click
on Setup and then click Wireless Settings on the left side.
2. Next to Security Mode, select WPA-Enterprise.
3. Next to WPA Mode, select Auto, WPA2 Only, or WPA Only. Use
Auto if you have wireless clients using both WPA and WPA2.
4. Next to Group Key Update Interval, enter the amount of time
before the group key used for broadcast and multicast data is
changed (3600 is default).
5. Next to Authentication Timeout, enter the amount of time before
a client is required to re-authenticate (60 minutes is default).
6. Next to RADIUS Server IP Address enter the IP Address of
your RADIUS server.
7. Next to RADIUS Server Port, enter the port you are using with
your RADIUS server. 1812 is the default port.
8. Next to RADIUS Server Shared Secret, enter the security
key.
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Section 4 - Security
9. If the MAC Address Authentication box is selected then the
user will need to connect from the same computer whenever
logging into the wireless network.
10. Click Advanced to enter settings for a secondary RADIUS
Server.
11. Click Apply Settings to save your settings.
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Section 5 - Connecting to a Wireless Network
Connect to a Wireless Network
Using Windows® Vista™
Windows® Vista™ users may use the built-in wireless utility. If you are using another company’s utility or Windows® 2000,
please refer to the user manual of your wireless adapter for help with connecting to a wireless network. Most utilities
will have a “site survey” option similar to the Windows® Vista™ utility as seen below.
If you receive the Wireless Networks Detected bubble, click
on the center of the bubble to access the utility.
or
Right-click on the wireless computer icon in your system tray
(lower-right corner next to the time). Select Connect to a
network.
The utility will display any available wireless networks in your
area. Click on a network (displayed using the SSID) and click
the Connect button.
If you get a good signal but cannot access the Internet, check you
TCP/IP settings for your wireless adapter. Refer to the Networking
Basics section in this manual for more information.
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Section 5 - Connecting to a Wireless Network
Configure Wireless Security
It is recommended to enable wireless security (WPA/WPA2) on your wireless router or access point before configuring
your wireless adapter. If you are joining an existing network, you will need to know the security key or passphrase
being used.
1. Open the Windows® Vista™ Wireless Utility by right-clicking
on the wireless computer icon in your system tray (lower
right corner of screen). Select Connect to a network.
2. Highlight the wireless network (SSID) you would like to
connect to and click Connect.
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Section 5 - Connecting to a Wireless Network
3. Enter the same security key or passphrase that is on your router
and click Connect.
It may take 20-30 seconds to connect to the wireless network. If the
connection fails, please verify that the security settings are correct.
The key or passphrase must be exactly the same as on the wireless
router.
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Section 5 - Connecting to a Wireless Network
Connect to a Wireless Network
Using Windows® XP
Windows® XP users may use the built-in wireless utility (Zero Configuration Utility). The following instructions are for
Service Pack 2 users. If you are using another company’s utility or Windows® 2000, please refer to the user manual
of your wireless adapter for help with connecting to a wireless network. Most utilities will have a “site survey” option
similar to the Windows® XP utility as seen below.
If you receive the Wireless Networks Detected bubble, click on
the center of the bubble to access the utility.
or
Right-click on the wireless computer icon in your system tray (lower
right corner next to the time). Select View Available Wireless
Networks.
The utility will display any available wireless networks in your
area. Click on a network (displayed using the SSID) and click the
Connect button.
If you get a good signal but cannot access the Internet, check you
TCP/IP settings for your wireless adapter. Refer to the Networking
Basics section in this manual for more information.
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Section 5 - Connecting to a Wireless Network
Configure WPA-PSK
It is recommended to enable encryption on your wireless router or access point before configuring your wireless adapter.
If you are joining an existing network, you will need to know the passphrase being used.
1. Open the Windows® XP Wireless Utility by right-clicking
on the wireless computer icon in your system tray
(lower-right corner of screen). Select View Available
Wireless Networks.
2. Highlight the wireless network (SSID) you would like to
connect to and click Connect.
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Section 5 - Connecting to a Wireless Network
3. The Wireless Network Connection box will appear. Enter the
WPA-PSK passphrase and click Connect.
It may take 20-30 seconds to connect to the wireless network. If the
connection fails, please verify that the WPA-PSK settings are correct.
The WPA-PSK passphrase must be exactly the same as on the
wireless router.
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Section 6 - Troubleshooting
Troubleshooting
This chapter provides solutions to problems that can occur during the installation and operation of the DIR-665. Read
the following descriptions if you are having problems. (The examples below are illustrated in Windows® XP. If you have
a different operating system, the screenshots on your computer will look similar to the following examples.)
1. Why can’t I access the web-based configuration utility?
When entering the IP address of the D-Link router (192.168.0.1 for example), you are not connecting to a website on
the Internet or have to be connected to the Internet. The device has the utility built-in to a ROM chip in the device itself.
Your computer must be on the same IP subnet to connect to the web-based utility.
• Make sure you have an updated Java-enabled web browser. We recommend the following:
• Internet Explorer 6.0 or higher
• Netscape 8 or higher
• Mozilla 1.7.12 (5.0) or higher
• Opera 8.5 or higher
• Safari 1.2 or higher (with Java 1.3.1 or higher)
• Camino 0.8.4 or higher
• Firefox 1.5 or higher
• Verify physical connectivity by checking for solid link lights on the device. If you do not get a solid link light, try using
a different cable or connect to a different port on the device if possible. If the computer is turned off, the link light may
not be on.
• Disable any internet security software running on the computer. Software firewalls such as Zone Alarm, Black Ice,
Sygate, Norton Personal Firewall, and Windows® XP firewall may block access to the configuration pages. Check the
help files included with your firewall software for more information on disabling or configuring it.
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Section 6 - Troubleshooting
• Configure your Internet settings:
• Go to Start > Settings > Control Panel. Double-click the Internet Options Icon. From the Security tab,
click the button to restore the settings to their defaults.
• Click the Connection tab and set the dial-up option to Never Dial a Connection. Click the LAN Settings
button. Make sure nothing is checked. Click OK.
• Go to the Advanced tab and click the button to restore these settings to their defaults. Click OK three
times.
• Close your web browser (if open) and open it.
• Access the web management. Open your web browser and enter the IP address of your D-Link router in the address
bar. This should open the login page for your the web management.
• If you still cannot access the configuration, unplug the power to the router for 10 seconds and plug back in. Wait
about 30 seconds and try accessing the configuration. If you have multiple computers, try connecting using a different
computer.
2. What can I do if I forgot my password?
If you forgot your password, you must reset your router. Unfortunately this process will change all your settings back
to the factory defaults.
To reset the router, locate the reset button (hole) on the rear panel of the unit. With the router powered on, use a
paperclip to hold the button down for 10 seconds. Release the button and the router will go through its reboot process.
Wait about 30 seconds to access the router. The default IP address is 192.168.0.1. When logging in, the username is
admin and leave the password box empty.
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Section 6 - Troubleshooting
3. Why can’t I connect to certain sites or send and receive emails when connecting through my router?
If you are having a problem sending or receiving email, or connecting to secure sites such as eBay, banking sites, and
Hotmail, we suggest lowering the MTU in increments of ten (Ex. 1492, 1482, 1472, etc).
Note: AOL DSL+ users must use MTU of 1400.
To find the proper MTU Size, you’ll have to do a special ping of the destination you’re trying to go to. A destination could
be another computer, or a URL.
• Click on Start and then click Run.
• Windows® 95, 98, and Me users type in command (Windows® NT, 2000, XP and Vista™ users type in
cmd) and press Enter (or click OK).
• Once the window opens, you’ll need to do a special ping. Use the following syntax:
ping [url] [-f] [-l] [MTU value]
Example: ping yahoo.com -f -l 1472
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Section 6 - Troubleshooting
You should start at 1472 and work your way down by 10 each time. Once you get a reply, go up by 2 until you get a
fragmented packet. Take that value and add 28 to the value to account for the various TCP/IP headers. For example,
lets say that 1452 was the proper value, the actual MTU size would be 1480, which is the optimum for the network
we’re working with (1452+28=1480).
Once you find your MTU, you can now configure your router with the proper MTU size.
To change the MTU rate on your router follow the steps below:
• Open your browser, enter the IP address of your router (192.168.0.1) and click OK.
• Enter your username (admin) and password (blank by default). Click OK to enter the web configuration
page for the device.
• Click on Setup and then click Manual Configure.
• To change the MTU enter the number in the MTU field and click Save Settings to save your settings.
• Test your email. If changing the MTU does not resolve the problem, continue changing the MTU in
increments of ten.
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