D Link DIR825B1 Xtreme N DUAL BAND GIGABIT ROUTER User Manual UserMan 8 KA2DIR825B1

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Document ID	1029606
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Document Description	Manual Part 5
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Date Submitted	2008-11-12 00:00:00
Date Available	2008-11-12 00:00:00
Creation Date	2008-11-12 13:21:45
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Document Title	UserMan-8_KA2DIR825B1.pdf
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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-825 offers the following types of security:
- WPA2 (Wi-Fi Protected Access 2) - WPA2-PSK (Pro-Shared Key)
- WPA (Wi-Fi Protected Access) - 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/WPAZ-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 (!?*&7) 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.
D-Link DIR»825 User Manual 71
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.
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Automatically: Select this option to automatically generate CZ:ZZZ§§Z$:"§$22§LWw m.
the router’s network key and click Next.
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Manually: Select this option to manually enter your network M
key and click Next.
D-Link DIR—825 User Manual 72
Section 4 . Security
If you selected Automatically, the summary window will
display your settings. Write down the security key and flxfiumflmmmmmmkmwms
enter this on your wireless clients. Click Save to save your
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D-Link DIR—825 User Manual 73
Section 4 » Security
Add 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
cIient(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.
D-Link DIR—825 User Manual
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74
Section 4 » Security
Configure WPA-Personal (PSK)
It is recommended to enable encryption on your wireless router before yourwireless 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, orWPA Only. Use
Auto if you have wireless clients using both WPA and WPA2.
4. Next to Cypher 7jvpe, select TKIP and AES, TKIP, or AES.
5. 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).
6. 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.
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7. 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.
D-Link DIR—825 User Manual
75
Section 4 » Security
1.
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.
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.
Next to Security Mode, select WPA-Enterprise.
Next to WPA Mode, select Auto, WPA2 Only, orWPA Only. Use
Auto if you have wireless clients using both WPA and WPA2.
Next to Cypher 7jvpe, select TKIP and AES, TKIP, or AES.
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).
Next to Authentication Timeout, enter the amount of time before
a client is required to re-authenticate (60 minutes is default).
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Next to RADIUS Server IP Address enter the IP Address of your RADIUS server.
D-Link DIR»825 User Manual
Section 4 » Security
8. Next to RADIUS Server Port, enter the port you are using with
your RADIUS server. 1812 is the default port.
9. Next to RADIUS Server Shared Secret, enter the security
key.
10. If the MAC Address Authentication box is selected then the
userwill need to connect from the same computer whenever
logging into the wireless network.
11. Click Advanced to enter settings for a secondary RADIUS
Server.
12. Click Apply Settings to save your settings.
D-Link DIR—825 User Manual
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77
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 orWindows® 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 yourwireless adapter. Refer to the Networking
Basics section in this manual for more information.
D-Link DIR—825 User Manual
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78
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.
Not Connected
1. Open the Windows Vista®WireIess Utility by right-clicking on
the wireless computer icon in your system tray (lower right
‘. Wireless networks are available,
corner of screen). Select Connect to a network. ‘
Connect to a network
Network and Sharmg Center
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2. Highlight the wireless network (SSID) you would like to u g Cmmmt
connect to and click Connect.
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D-Link DIR—825 User Manual 79
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.
D-Link DIR—825 User Manual
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80
Section 5 » Connecting to a Wireless Network
Connect Using WCN 2.0 in Windows Vista®
The router supports Wi-Fi protection, referred to as WCN 2.0 in Windows Vista®. The following instructions for setting
this up depends on whether you are using Windows Vista® to configure the router or third party software.
When you first set up the router, Wi-Fi protection is disabled and unconfigured.To enjoy the benefits of Wi-Fi protection,
the router must be both enabled and configured.There are three basic methods to accomplish this: use Windows Vista’s
built-in support for WCN 2.0, use software provided by a third party, or manually configure.
If you are running Windows Vista®, log into the router and click the Enable checkbox in the Basic > Wireless section.
Use the Current PIN that is displayed on the Advanced > Wi-Fi Protected Setup section or choose to click the Generate
New PIN button or Reset PIN to Default button.
For additional information, please refer to page 52.
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If you are using third party software to set up Wi-Fi Protection, carefully follow the directions. When you are finished,
proceed to the next section to set up the newly-configured router.
D-Link DIR»825 User Manual 81
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 toryour wireless adapter. Refer to the Networking
Basics section in this manual for more information.
D-Link DIR—825 User Manual
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82
Section 5 , Connecting to a Wireless Network
Configure WPA-PSK
It is recommended to enable WPA 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 WPA key 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 “mmm‘cme‘ms
Wireless Networks. “9°"
Change Windows Firewall settings
2. Highlight the wireless network (SSID) you would like to
connect to and click Connect. umammmnemm
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D-Link DIR—825 User Manual 83
Section 5 » Connecting to a Wireless Network
3. The Wireless Network Connection box will appear. Enter the “We“"worktonnemon
WPA-PSK passphrase and click Connect.
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It may take 20-30 seconds to connect to the wireless network. If the runwmmmcmr.
connection fails, please verify that the WPA-PSK settings are correct. Nemflkev: |
The WPA-PSK passphrase must be exactly the same as on the ‘
wireless router.
D-Link DIR—825 User Manual 84
Section 6 » Troubleshooting
Troubleshooting
This chapter provides solutions to problems that can occur during the installation and operation of the DIR-825. 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 (192.168.01 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
0 Mozilla 1.7.12 (5.0) or higher
0 Opera 8.5 or higher
- Safari 1.2 or higher (with Java 1.3.1 or higher)
0 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.
D-Link DIR»825 User Manual 85
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. Cllck 0K.
0 Go to the Advanced tab and click the button to restore these settings to their defaults. Click OK three
times.
- Close your web browser (it 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 192.1 68.0.1 . When logging in, the username is
admin and leave the password box empty.
D-Link DIR»825 User Manual 86
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, and XP 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] [_|] [MTU value] C:\>|’liri§l Halmnmnn 7; f] 145"7
' ' : n.r.nm [65.94 .131 with 1482 bytes “r data:
hr: — - hut DF
hr: hut DF
hr‘ hut DF
hr‘ hut DF :.
Example: ping yahoo.com -f -I 1472 ‘ ' ‘ n,,;,n.,,,
f l 147}!
l’lnylny -,.. rum ll-l..‘i'| "1.1.1” ullh l‘1"'
apply A ' ' ‘I'lm
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tlnr: r
D-Link DIR-825 User Manual 87
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.
D-Link DIR»825 User Manual 88
Appendix A » Wireless Basics
Wireless Basics
D-Link wireless products are based on industry standards to provide easy-to-use and compatible high-speed wireless
connectivity within your home, business or public access wireless networks. Strictly adhering to the IEEE standard,
the D-Link wireless family of products will allow you to securely access the data you want, when and where you want
It.You wIII be able to enjoy the freedom that wlreless networklng dellvers.
A wireless local area network (WLAN) is a cellular computer network that transmits and receives data with radio signals
instead of wires. Wireless LANs are used increasingly in both home and office environments, and public areas such
as airports, coffee shops and universities. Innovative ways to utilize WLAN technology are helping people to work and
communicate more efficiently. Increased mobility and the absence of cabling and other fixed infrastructure have proven
to be beneficial for many users.
Wireless users can use the same applications they use on a wired network. Wireless adapter cards used on laptop
and desktop systems support the same protocols as Ethernet adapter cards.
Under many circumstances, it may be desirable for mobile network devices to link to a conventional Ethernet LAN in
order to use servers, printers or an Internet connection supplied through the wired LAN. A Wireless Router is a device
used to provide this link.
D-Link DIR»825 User Manual 89
Appendix A » Wireless Basics
What is Wireless?
Wireless or Wi-Fi technology is another way of connecting your computer to the network without using wires. Wi-Fi
uses radio frequency to connect wirelessly, so you have the freedom to connect computers anywhere in your home or
office network.
Why D-Link Wireless?
D-Link is the worldwide leader and award winning designer, developer, and manufacturer of networking products.
D-Link delivers the performance you need at a price you can afford. D-Link has all the products you need to build your
network.
How does wireless work?
Wireless works similar to how cordless phone work, through radio signals to transmit data from one point A to point
B. But wireless technology has restrictions as to how you can access the network. You must be within the wireless
network range area to be able to connect your computer. There are two different types of wireless networks Wireless
Local Area Network (WLAN), and Wireless Personal Area Network (WPAN).
Wireless Local Area Network (WLAN)
In a wireless local area network, a device called an Access Point (AP) connects computers to the network. The access
point has a small antenna attached to it, which allows it to transmit data back and forth over radio signals. With an
indoor access point as seen in the picture, the signal can travel up to 300 feet. With an outdoor access point the signal
can reach out up to 30 miles to serve places like manufacturing plants, industrial locations, college and high school
campuses, airports, golf courses, and many other outdoor venues.
D-Link DIR»825 User Manual 90

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Modify Date                     : 2008:11:12 13:22:05-05:00
Create Date                     : 2008:11:12 13:21:45-05:00
Title                           : UserMan-8_KA2DIR825B1.pdf
Author                          : yfaziloglu
Creator                         : PrimoPDF http://www.primopdf.com
Producer                        : PrimoPDF
Page Count                      : 20
Mod Date                        : 2008:11:12 13:22:05-05:00
Creation Date                   : 2008:11:12 13:21:45-05:00
Metadata Date                   : 2008:11:12 13:22:05-05:00

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