User manual NETGEAR WNR2200

[. . . ] Registration is required before you can use our telephone support service. Product updates and Web support are always available by going to: http://www. Setup documentation is available on the CD, on the support website, and on the documentation website. When the wireless router is connected to the Internet, click the Knowledgebase or the Documentation link under Web Support in the main menu to view support information. [. . . ] The firewall should be disabled only in special circumstances, such as when you are troubleshooting application issues. This feature is sometimes helpful when you are using some online games and videoconferencing. Be careful when using this feature because it makes the firewall security less effective. Default DMZ Server Respond to Ping on Internet If you want the wireless router to respond to a ping from the Internet, select Port this check box. This should be used only as a diagnostic tool, since it allows your wireless router to be discovered. Do not select this check box unless you have a specific reason to do so. MTU Size (in bytes) The normal MTU (Maximum Transmit Unit) value for most Ethernet networks is 1500 bytes, or 1492 Bytes for PPPoE connections. This is rarely required, and should not be done unless you are sure it is necessary for your ISP connection. Secured NAT provides a secured firewall to protect the computers on the LAN from attacks from the Internet, but might prevent some Internet games, point-to-point applications, or multimedia applications from functioning. Open NAT provides a much less secured firewall, but allows almost all Internet applications to function. Select this feature if you have a SIP (Session Initiation Protocol) telephone or other SIP base devices, and you want them to communicate with other people. If you have been unable to build a successful SIP connection, selecting this check box allows for such a connection without compromising other SIP ALG (Application-level gateway) firewall settings, such as Disable SPI Firewall. Disable SIP ALG Setting Up a Default DMZ Server The default DMZ server feature is helpful when you are using some online games and videoconferencing applications that are incompatible with Network Address Translation (NAT). The router is programmed to recognize some of these applications and to work correctly with them, but there are other applications that might not function well. In some cases, one local computer can run the application correctly if that computer’s IP address is entered as the default DMZ server. A computer designated as the default DMZ server loses much of the protection of the firewall and is exposed to exploits from the Internet. If compromised, the DMZ server computer can be used to attack other computers on your network. Incoming traffic from the Internet is usually discarded by the router unless the traffic is a response to one of your local computers or a service that you have configured in the Port Forwarding/Port Triggering screen. Instead of discarding this traffic, you can have it forwarded to one computer on your network. Under usual circumstances, the router has adequate routing information after it has been configured for Internet access, and you do not need to configure additional static routes. You must configure static routes only for unusual cases such as multiple routers or multiple IP subnets located on your network. As an example of when a static route is needed, consider the following case: • • • Your primary Internet access is through a cable modem to an ISP. [. . . ] If the error persists, you might have a hardware problem and should contact Technical Support at http://www. 0, September 2010 8-13 N300 Wireless Router with USB WNR2200 User Manual Appendix A Default Configuration and Technical Specifications This appendix provides factory default settings and technical specifications for the N300 Wireless Router with USB WNR2200. Restoring the Default Factory Configuration Settings You can restore the factory default configuration settings to reset the router’s user name to admin, the password to password, and the IP address to www. This procedure erases your current configuration, including your wireless security settings, and restores the factory defaults. [. . . ]