Reference Manual for the ProSafe VPN Firewall 25 with 4 Gigabit LAN and Dual WAN Ports

Rollover Setup

Perform the following steps to configure the dual WAN ports for rollover:

1.Click the WAN Mode link directly under Setup on the upper left of the main menu to invoke the WAN Mode Auto-Rollover screen shown in Figure 4-6.

Figure 4-6: WAN Mode screen for auto-rollover

Fill out the screen using the following parameter definitions:

Detection of WAN failure—WANfailure is detected using DNS queries to the DNS server. For each WAN interface, DNS queries are sent to the configured DNS server. If the DNS replies are not received, the corresponding WAN interface is considered down.

ISP DNS Server—In this case, DNS queries are sent to the DNS server configured on the WAN ISP pages (see “Step 3: Configure the Internet Connections to Your ISPs (Required)” on page 4-8).

Public DNS Server—The user is also given an option, to enter any Public DNS server.DNS queries are sent to this server through the WAN interface being monitored.

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Connecting the FVS124G to the Internet

202-10085-01, March 2005

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NETGEAR FVS124G manual Rollover Setup, WAN Mode screen for auto-rollover