Netgear DGFV338 DGFV338 Reference Manual - Page 47
Configuring Dynamic DNS (If Needed), con d your account information in the gateway
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DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual The default time to roll over after the primary WAN interface fails is 2 minutes (e.g., a 30second minimum test period, times a minimum of four tests). Configuring Dynamic DNS (If Needed) Note: If your ISP assigns a private WAN IP address such as 192.168.x.x or 10.x.x.x, the dynamic DNS service will not work because private addresses will not be routed on the Internet. If your network has a permanently assigned (static or fixed) IP address, you can register a domain name and have that name linked with your IP address by public Domain Name Servers (DNS). However, if your Internet account uses a dynamically assigned IP address, you will not know in advance what your IP address will be, and the address can change frequently. In this case, you can use a commercial dynamic DNS service, which allows you to register an extension to its domain, and resolves DNS requests for the resulting FQDN to your frequently-changing IP address. For rollover mode, you will need a fully qualified domain name (FQDN) to implement features such as exposed hosts and virtual private networks regardless of whether you have a fixed or dynamic IP address. The gateway contains a client that can connect to a dynamic DNS service provider. To use this feature, you must select a service provider and obtain an account with them. After you have configured your account information in the gateway, whenever your ISP-assigned IP address changes, your gateway will automatically contact your dynamic DNS service provider, log in to your account, and register your new IP address. Basic Installation and Configuration v1.0, April 2007 2-17