D Link DIR855A2 Xtreme N DUO MEDIA ROUTER User Manual 3

D Link Corporation Xtreme N DUO MEDIA ROUTER 3

User manual 3

47D-Link DIR-855 User ManualSection 3 - ConfigurationEnter the IP address of packets that will take this route.Enter the netmask of the route, please note that the octets must match your destination IP address.Enter your next hop gateway to be taken if this route is used.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. Select the interface that the IP packet must use to transit out of the router when this route is used. Destination IP:Netmask:Gateway:Metric:Interface:RoutingThe Routing option is an advanced method of customizing specific routes of data through your network.
48D-Link DIR-855 User ManualSection 3 - ConfigurationSet the transmit power of the antennas.Beacons are packets sent by an Access Point to synchronize a wireless network. Specify a value. 100 is the default setting and is recommended. This value should remain at its default setting of 2432. If inconsistent data flow is a problem, only a minor modification should be made.The fragmentation threshold, which is specified in bytes, determines whether packets will be fragmented. Packets exceeding the 2346 byte setting will be fragmented before transmission. 2346 is the default setting. (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.When checked, it will disable the ability for computers on the wireless network from seeing each other, but will allow you to see computers on the wired network.WMM is QoS for your wireless network. This will improve the quality of video and voice applications for your wireless clients.Enable this option to prevent associated wireless clients from communicating with each other.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.Transmit Power:Beacon Period:RTS Threshold:Fragmentation Threshold:DTIM Interval:Wireless Isolation:WMM Function:WLAN Partition:Short GI:Advanced Wireless Settings802.11n/g (2.4GHz)
49D-Link DIR-855 User ManualSection 3 - ConfigurationAdvanced Wireless Settings802.11n/a (5GHz)Set the transmit power of the antennas.Beacons are packets sent by an Access Point to synchronize a wireless network. Specify a value. 100 is the default setting and is recommended. This value should remain at its default setting of 2432. If inconsistent data flow is a problem, only a minor modification should be made.The fragmentation threshold, which is specified in bytes, determines whether packets will be fragmented. Packets exceeding the 2346 byte setting will be fragmented before transmission. 2346 is the default setting. (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.When checked, it will disable the ability for computers on the wireless network from seeing each other, but will allow you to see computers on the wired network.WMM is QoS for your wireless network. This will improve the quality of video and voice applications for your wireless clients.Enable this option to prevent associated wireless clients from communicating with each other.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.Transmit Power:Beacon Period:RTS Threshold:Fragmentation Threshold:DTIM Interval:Wireless Isolation:WMM Function:WLAN Partition:Short GI:
50D-Link DIR-855 User ManualSection 3 - ConfigurationWISH SettingsWISH is short for Wireless Intelligent Stream Handling, a technology developed to enhance your experience of using a wireless network by prioritizing the traffic of different applications. Enable this option if you want to allow WISH to prioritize your traffic. Enable WISH:Allows the router to recognize HTTP transfers for many common audio and video streams and prioritize them above other traffic. Such streams are frequently used by digital media players. HTTP:Enables the router to recognize certain audio and video streams generated by a Windows Media Center PC and to prioritize these above other traffic. Such streams are used by systems known as Windows Media Extenders, such as the Xbox 360. Windows Media Center:When enabled, this option causes the router to automatically attempt to prioritize traffic streams that it doesn’t otherwise recognize, based on the behaviour that the streams exhibit. This acts to deprioritize streams that exhibit bulk transfer characteristics, such as file transfers, while leaving interactive traffic, such as gaming or VoIP, running at a normal priority.Automatic:WISH Rules: A WISH Rule identifies a specific message flow and assigns a priority to that flow. For most applications, the priority classifiers ensure the right priorities and specific WISH Rules are not required. WISH supports overlaps between rules. If more than one rule matches for a specific message flow, the rule with the highest priority will be used.
51D-Link DIR-855 User ManualSection 3 - ConfigurationCreate a name for the rule that is meaningful to you.Name:The priority of the message flow is entered here. The four priorities are defined as:BK: Background (least urgent)BE: Best Effort.VI: VideoVO: Voice (most urgent)Priority:The protocol used by the messages. Protocol:The rule applies to a flow of messages for which one computer’s IP address falls within the range set here. Host IP Range:The rule applies to a flow of messages for which host’s port number is within the range set here. Host Port Range:
52D-Link DIR-855 User ManualSection 3 - ConfigurationUPnPInternet Ping BlockInternet Port SpeedMulticast StreamsTo use the Universal Plug and Play (UPnP™) feature click on Enabled. UPNP provides compatibility with networking equipment, software and peripherals.Unchecking the box will not allow the DIR-855 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”.Select from the drop-down menu if you would like to apply the Inbound Filter to the WAN ping. Refer to page 44 for more information regarding Inbound Filter.You may set the port speed of the Internet port to 10Mbps, 100Mbps, or auto. Some older cable or DSL modems may require you to set the port speed to 10Mbps.Check the box to allow multicast traffic to pass through the router from the Internet.Enable UPnP:WAN Ping:WAN Ping Inbound Filter:WAN Port Speed:Multicast streams:Advanced Network Settings
53D-Link DIR-855 User ManualSection 3 - ConfigurationAdministrator SettingsThis 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.Enter a new password for the Administrator Login Name. The administrator can make changes to the settings.Enter the new password for the User login. If you login as the User, you cannot change the settings (you can only view them).Enter a name for the DIR-855 router.Enables a challenge-response test to require users to type 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.Check to enable HTTPS to connect to the router securely.Remote management allows the DIR-855 to be configured 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.The port number used to access the DIR-855.Admin Password:User Password:Gateway Name:Enable Graphical Authentication:Enable HTTPS Server:Enable Remote Management:Remote Admin Inbound Filter:Details:Example: http://x.x.x.x:8080 whereas x.x.x.x is the Internet IP address of the DIR-855 and 8080 is the port used for the Web Management interface. If you have enabled HTTPS Server and checked Use HTTPS, you must enter https:// as part of the URL to access the router remotely.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.
54D-Link DIR-855 User ManualSection 3 - ConfigurationTime SettingsSelect the Time Zone from the drop-down menu.To select Daylight Saving time manually, select enabled or disabled, and enter a start date and an end date for daylight saving time.NTP is short for Network Time Protocol. NTP 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.Enter the NTP server or select one from the drop-down menu.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.Time Zone:Daylight Saving:Enable NTP Server:NTP Server Used:Manual: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.
55D-Link DIR-855 User ManualSection 3 - ConfigurationSysLogThe 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 SysLog Server:SysLog Server IP Address:Check this box to send the router logs to a SysLog Server.The address of the SysLog server that will be 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).
56D-Link DIR-855 User ManualSection 3 - ConfigurationEmail SettingsThe Email feature can be used to send the system log files, router alert messages, and firmware update notification to your email address. Enable Email Notification: From Email Address:To Email Address:SMTP Server Address:Enable Authentication:Account Name:Password:On Log Full:On Schedule:Schedule:When this option is enabled, router activity logs are e-mailed to a designated email address.This email address will appear as the sender when you receive a log file or firmware upgrade notification via email.Enter the email address where you want the email sent. Enter the SMTP server address for sending email. If your SMTP server requires authentication, select this option.Check this box if your SMTP server requires authentication. Enter your account for sending email.Enter the password associated with the account. Re-type the password associated with the account.When this option is selected, logs will be sent via email when the log is full.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 a schedule, go to Tools > Schedules.
57D-Link DIR-855 User ManualSection 3 - ConfigurationUse this option to save the current router 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. Use this option to load previously saved router configuration settings. First, use the Browse control to find a previously save file of configuration settings. Then, click the Load button to transfer those settings to the router. This option will restore all configuration 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. Click to reboot the router.Save Settings to Local Hard Drive:Load Settings from Local Hard Drive:Restore to Factory Default Settings:Reboot Device:System SettingsThis section allows you to manage the router’s configuration settings, reboot the router, and restore the router to the factory default settings. Restoring the unit to the factory default settings will erase all settings, including any rules that you’ve created.
58D-Link DIR-855 User ManualSection 3 - ConfigurationClick on Check Now to find out if there is an updated firmware; if so, download the new firmware to your hard drive.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.Check Automatically Check Online for Latest 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.Firmware Upgrade:Browse:Notifications Options:Update FirmwareYou 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.
59D-Link DIR-855 User ManualSection 3 - ConfigurationDynamic Domain Name System is a method of keeping a domain name linked to a changing IP Address. Check the box to enable DDNS.Choose your DDNS provider from the drop down menu.Enter the Host Name that you registered with your DDNS service provider.Enter the Username for your DDNS account.Enter the Password for your DDNS account.Enter a time (in hours).Enable Dynamic DNS:Server Address:Host Name:Username or Key:Password or Key:Timeout:DDNSThe 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.
60D-Link DIR-855 User ManualSection 3 - ConfigurationThe 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.The results of your ping attempts will be displayed here.System CheckPing Test:Ping Results:
61D-Link DIR-855 User ManualSection 3 - ConfigurationEnter a name for your new schedule.Select a day, a range of days, or All Week to include every day.Check All Day - 24hrs or enter a start and end time for your schedule.Click Save to save your schedule. You must click Save Settings at the top for your schedules to go into effect.The list of schedules will be listed here. Click the Edit icon to make changes or click the Delete icon to remove the schedule.Name:Days:Time:Save:Schedule Rules List:SchedulesSchedules can be created for use with enforcing rules. For example, if you want to restrict web access to Mon-Fri from 3pm to 8pm, you could create a schedule selecting Mon, Tue, Wed, Thu, and Fri and enter a Start Time of 3pm and End Time of 8pm.
62D-Link DIR-855 User ManualSection 3 - ConfigurationThis page displays the current information for the DIR-855. 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.Displays the router’s time and firmware version.Displays the MAC address and the public IP settings for the router.Displays the MAC address and the private (local) IP settings for the router.Displays the wireless MAC address and your wireless settings such as SSID and Channel.Displays computers and devices that are connected to the router via Ethernet and that are receiving an IP address assigned by the router (DHCP). Displays the Multicast Group IP Address.General:WAN:LAN:Wireless LAN:LAN Computers:IGMP Multicast Memberships:Device Information
63D-Link DIR-855 User ManualSection 3 - ConfigurationLogWhat to View:View Levels:Apply Log Settings:Refresh:Clear:Email Now:Save Log: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.There are three levels of message importance: Informational, Warning, and Critical. Select the levels that you want displayed in the log.Will filter the log results so that only the selected options appear.Updates the log details on the screen so it displays any recent activity.Clears all of the log contents.This option will send a copy of the router log to the email address configured in the Tools > Email screen.This option will save the router to a log file on your computer.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.
64D-Link DIR-855 User ManualSection 3 - ConfigurationStatsThe screen below displays the Traffic Statistics. Here you can view the amount of packets that pass through the DIR-855 on both the Internet, LAN ports and both the 802.11n/g (2.4GHz) and 802.11n/a (5GHz) wireless bands. The traffic counter will reset if the device is rebooted.
65D-Link DIR-855 User ManualSection 3 - ConfigurationInternet SessionsThe Internet Sessions page displays full details of active Internet sessions through your router. An Internet session is a conversation between a program or application on a LAN-side computer and a program or application on a WAN-side computer.
66D-Link DIR-855 User ManualSection 3 - ConfigurationThe 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.WirelessThe WISH details page displays full details of wireless clients that are connected when WISH is enabled.WISH
67D-Link DIR-855 User ManualSection 3 - ConfigurationSupport
68D-Link DIR-855 User ManualSection 4 - SecurityWireless SecurityThis section will show you the different levels of security you can use to protect your data from intruders. The DIR-855 offers the following types of security:• WPA2 (Wi-Fi Protected Access 2) • WPA2-PSK (Pre-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/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.
69D-Link DIR-855 User ManualSection 4 - SecurityWireless Security Setup WizardTo run the security wizard, click on Setup at the top and then click Launch Wireless Security Setup Wizard.Check the Manually set 5GHz band Network Name... box to manually set your desired wireless network name for the 5GHz band.Type your desired wireless network name (SSID). Automatically: Select this option to automatically generate the router’s network key and click Next.Manually: Select this option to manually enter your network key and click Next.
70D-Link DIR-855 User ManualSection 4 - SecurityIf you selected Automatically, the summary window will display your settings. Write down the security key and enter this on your wireless clients. Click Save to save your settings.If you selected Manually, the following screen will appear.
71D-Link DIR-855 User ManualSection 4 - SecurityFrom the Basic > Wizard screen, click Add Wireless Device with WPS.Add Wireless Device with WPS WizardPIN: 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.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.
72D-Link DIR-855 User ManualSection 4 - SecurityConfigure 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 Cypher Type, 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. 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.
73D-Link DIR-855 User ManualSection 4 - SecurityIt 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 Cypher Type, 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 Authentication Timeout, enter the amount of time before a client is required to re-authenticate (60 minutes is default). 7. Next to RADIUS Server IP Address enter the IP Address of your RADIUS server.Configure WPA-Enterprise (RADIUS)
74D-Link DIR-855 User ManualSection 4 - Security8. 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 user will 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.
75D-Link DIR-855 User ManualSection 5 - Connecting to a Wireless NetworkConnect to a Wireless NetworkUsing 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.Right-click on the wireless computer icon in your system tray (lower-right corner next to the time). Select Connect to a network.If you receive the Wireless Networks Detected bubble, click on the center of the bubble to access the utility. orThe 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.
76D-Link DIR-855 User ManualSection 5 - Connecting to a Wireless NetworkConfigure Wireless SecurityIt 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.2. Highlight the wireless network (SSID) you would like to connect to and click Connect.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.
77D-Link DIR-855 User ManualSection 5 - Connecting to a Wireless Network3. 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.
78D-Link DIR-855 User ManualSection 5 - Connecting to a Wireless NetworkConnect 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. 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.
79D-Link DIR-855 User ManualSection 5 - Connecting to a Wireless NetworkConnect to a Wireless NetworkUsing Windows® XPWindows® 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.Right-click on the wireless computer icon in your system tray (lower-right corner next to the time). Select View Available Wireless Networks.If you receive the Wireless Networks Detected bubble, click on the center of the bubble to access the utility. orThe 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.
80D-Link DIR-855 User ManualSection 5 - Connecting to a Wireless NetworkConfigure WPA-PSKIt 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.2. Highlight the wireless network (SSID) you would like to connect to and click Connect.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.
81D-Link DIR-855 User ManualSection 5 - Connecting to a Wireless Network3. 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.
82D-Link DIR-855 User ManualSection 6 - TroubleshootingTroubleshootingThis chapter provides solutions to problems that can occur during the installation and operation of the DIR-855. 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• Firefox 3.0 or higher• Safari 3.0 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.
83D-Link DIR-855 User ManualSection 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.
84D-Link DIR-855 User ManualSection 6 - Troubleshooting3. 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] [-l] [MTU value] Example: ping yahoo.com -f -l 1472
85D-Link DIR-855 User ManualSection 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.
86D-Link DIR-855 User ManualAppendix A - Wireless BasicsD-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 will be able to enjoy the freedom that wireless networking delivers.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.Wireless Basics
87D-Link DIR-855 User ManualAppendix A - Wireless BasicsWhat 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.
88D-Link DIR-855 User ManualAppendix A - Wireless BasicsWireless Personal Area Network (WPAN)Bluetooth is the industry standard wireless technology used for WPAN. Bluetooth devices in WPAN operate in a range up to 30 feet away.Compared to WLAN the speed and wireless operation range are both less than WLAN, but in return it doesn’t use nearly as much power which makes it ideal for personal devices, such as mobile phones, PDAs, headphones, laptops, speakers, and other devices that operate on batteries.Who uses wireless? Wireless technology as become so popular in recent years that almost everyone is using it, whether it’s for home, office, business, D-Link has a wireless solution for it.Home • Gives everyone at home broadband access • Surf the web, check email, instant message, and etc • Gets rid of the cables around the house • Simple and easy to use Small Office and Home Office • Stay on top of everything at home as you would at office • Remotely access your office network from home • Share Internet connection and printer with multiple computers • No need to dedicate office space
89D-Link DIR-855 User ManualAppendix A - Wireless BasicsWhere is wireless used? Wireless technology is expanding everywhere not just at home or office. People like the freedom of mobility and it’s becoming so popular that more and more public facilities now provide wireless access to attract people. The wireless connection in public places is usually called “hotspots”.Using a D-Link Cardbus Adapter with your laptop, you can access the hotspot to connect to Internet from remote locations like: Airports, Hotels, Coffee Shops, Libraries, Restaurants, and Convention Centers.Wireless network is easy to setup, but if you’re installing it for the first time it could be quite a task not knowing where to start. That’s why we’ve put together a few setup steps and tips to help you through the process of setting up a wireless network.TipsHere are a few things to keep in mind, when you install a wireless network.Centralize your router or Access Point Make sure you place the router/access point in a centralized location within your network for the best performance. Try to place the router/access point as high as possible in the room, so the signal gets dispersed throughout your home. If you have a two-story home, you may need a repeater to boost the signal to extend the range.Eliminate Interference Place home appliances such as cordless telephones, microwaves, and televisions as far away as possible from the router/access point. This would significantly reduce any interference that the appliances might cause since they operate on same frequency.

Navigation menu