D-Link DIR-825 manual Troubleshooting

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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, 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

D-Link DIR-825 User Manual

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Contents Page Revision Date Description PrefaceManual Revisions TrademarksTable of Contents Registration Wireless SecurityProductPackageOverviewContents Utility Requirements System RequirementsComputer with the following Browser RequirementsTotal Performance IntroductionFeatures Connections Hardware OverviewStatus LED Power LEDLEDs Internet LEDBefore you Begin InstallationWireless Installation Considerations Connect to Cable/DSL/Satellite Modem Connect to Another Router Installation Getting Started Click Install RouterWeb-based Configuration Utility ConfigurationClick Launch Internet Connection Setup Wizard to begin Setup WizardConfiguration Configuration Configuration Click Manual Internet Connection Setup to begin Manual Internet Connection SetupServer Dynamic CableHost Name PrimaryPPPoE DSL Internet SetupConnection Manual PptpPage L2TP Reconnect Mode Select either Always-on,On-Demand, or ManualPage Static assigned by ISP Wireless Settings 802.11n/g 2.4GHz Manual Wireless SettingsPage 802.11n/a 5GHz Page Router Settings Network SettingsDhcp Server Settings Dhcp Reservation Virtual Server Configuration Port Forwarding Application Rules Speed QoS EnginePage Network Filters Access Control Wizard Access ControlAccess Control Wizard Access Control Wizard Add Website Select Allow or Deny Filtering Rule Website FiltersInbound Filters Enable SPI NAT Endpoint Filtering Firewall SettingsEnable DMZ Routing Transmit Power Set the transmit power of the antennas Advanced Wireless Settings802.11n/a 5GHz Wish Settings Page Reset PIN to Wi-Fi Protected Setup WPSDevice Wizard StationEnable UPnP WAN Ping Advanced Network SettingsGuest Zone Security ModeSchedule Administrator Settings Time Settings SysLog Server SysLog Server SysLogAuthentication authentication Email SettingsSystem Settings Check Email Notification of Newer Firmware Update FirmwareDdns System Check Schedules Device Information Log Statistics Internet Sessions Wish WirelessSupport What is WPA? Wireless SecurityWireless Security Setup Wizard Security Add Wireless Device with WPS Wizard Next to Security Mode, select WPA-Personal Configure WPA-Personal PSKNext to Security Mode, select WPA-Enterprise Configure WPA-Enterprise RadiusSecurity Using Windows Vista Connect to a Wireless NetworkConfigure Wireless Security Connecting to a Wireless Network Connect Using WCN 2.0 in Windows Vista Using Windows XP Configure WPA-PSK Connecting to a Wireless Network Why can’t I access the web-based configuration utility? TroubleshootingWhat can I do if I forgot my password? Troubleshooting Troubleshooting Wireless Basics Wireless Local Area Network Wlan What is Wireless?Home Wireless Personal Area Network WpanSmall Office and Home Office Eliminate Interference Centralize your router or Access PointSecurity Wireless ModesCheck your IP address Networking BasicsStep Statically Assign an IP addressTechnical Specifications For customers within the United States Contacting Technical SupportLimited Warranty WarrantyNon-Applicability of Warranty Limited Software WarrantySubmitting a Claim Disclaimer of Other Warranties What Is Not CoveredCopyright Statement Limitation of LiabilityGoverning Law TrademarksFCC Radiation Exposure Statement CE Mark WarningFCC Statement FCC CautionIC Radiation Exposure Statement ICC NoticeRèglement d’Industry Canada Registration