D-Link DIR-635 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-635 User Manual

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Contents Page Table of Contents Networking Basics Wireless SecurityTroubleshooting Wireless Basics ProductPackageOverviewContents Introduction Total PerformanceFeatures Hardware Overview ConnectionsLEDs Internet LEDInstallation Before you BeginWireless Installation Considerations Getting Started Configuration Web-based Configuration UtilitySetup Wizard Click Launch Internet Connection Setup Wizard to beginConfiguration Configuration Configuration Manual Configuration Dynamic CableInternet Setup PPPoE DSLPptp Page L2TP Page Static assigned by ISP Big Pond Wireless Settings Channel WidthWireless Security Network Settings Dhcp Server Settings Dhcp Reservation Virtual Server Configuration Port Forwarding Application Rules QoS Engine SpeedNetwork Filters Dhcp ClientAccess Control Access Control Wizard Access Control Wizard Website Filters Inbound Filters Firewall Settings Application Level Gateway ALG Configuration Advanced Wireless Settings Advanced Network Settings Administrator Settings Time Settings SysLog SysLog Server SysLog ServerEmail Settings Authentication authenticationSystem Settings Update Firmware Check Email Notification of Newer FirmwareDdns System Check Schedules Device Information Log Stats Active SessionsWireless SupportWireless Security What is WEP?What is WPA? Wireless Security Setup Wizard Security Security Configure WEP Configure WPA-Personal PSK Configure WPA-Enterprise Radius WPA2Security Connect to a Wireless Network Using Windows XPConfigure WEP Connecting to a Wireless Network Configure WPA-PSK Connecting to a Wireless Network Troubleshooting Why can’t I access the web-based configuration utility?What can I do if I forgot my password? Troubleshooting Troubleshooting Wireless Basics What is Wireless? Wireless Local Area Network WlanSmall Office and Home Office Wireless Personal Area Network WpanHome Centralize your router or Access Point Eliminate InterferenceWireless Modes SecurityNetworking Basics Check your IP addressStep Step Highlight Internet Protocol TCP/IP and click PropertiesConnect to Cable/DSL/Satellite Modem Connect to Another Router Appendix B Networking Basics Technical Specifications LEDs