Quick Reference Guide

ProSafe VPN Firewall 50 FVS338 Reference Manual
Connecting the VPN Firewall to the Internet 2-13
v1.0, January 2010
3. In the Port Mode section of the screen, select the port mode settings to configure your VPN
firewall to use only one WAN port (either the broadband port or the dial-up port) or to select
the dial-up port as a backup.
• If you are connected to only one ISP, then select the Use only single WAN port radio box
and select the WAN port that is connected to your ISP from the pull-down menu.
• If you have both ISP links connected for Internet connectivity, check the Primary
Broadband with Dialup as backup for auto-rollover.
4. In the WAN Failure Detection Method section of the screen, configure the failure detection
method to notify the VPN firewall of a link failure if you are using dial-up as a backup to
engage auto-rollover. The VPN firewall checks the connection of the primary link at regular
intervals to detect its status. Check the radio box of one the following methods to detect link
failure:
• Select DNS lookup using configured DNS Servers to detect failure of the Broadband
link, using the DNS servers configured on the Broadband ISP Settings screen.
• Select DNS lookup using this DNS Server and enter the IP address of the DNS server to
specify a DNS server for detecting WAN failure
• Select Ping this IP address and enter an IP address to detect WAN failure by pinging to
an IP address. Ensure that this destination host is reliable.
If a failure is detected on the primary broadband connection, the secondary dial-up connection
connects to the Internet. When the primary connection is detected as back online, the
secondary dial-up connection disconnects.
Specify the test period and failover number:
• Test Period. Enter the test period in seconds, which specified how often the VPN firewall
should run the configured detection method. The default is 30 seconds.
• Failover after. Enter the number of failures that should occur before the VPN firewall
rolls-over to the dial-up port. The default is 4.
5. Enter Apply to save your settings or Cancel to revert to the previous settings.