Configuring Dynamic Dns (If Needed) - NETGEAR FVS338 - ProSafe VPN Firewall 50 Router Reference Manual

FVS338 ProSafe VPN Firewall 50 Reference Manual
• If you have both ISP links connected for Internet connectivity, check the Primary
Broadband with Dialup as backup for auto-rollover.
4. The WAN Failure Detection Method must be configured to notify the router of a link failure if
you are using Dialup as a backup to engage auto-rollover. The router 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 in 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 to 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 dialup connection
connects to the Internet. When the primary connection is detected as back online, the
secondary dialup connection disconnects.
5. Enter a Test Period, in seconds, to tell the router how often it should run the configured
detection method. The default is 30 seconds.
6. Enter the number of router failures that should occur before the router rolls-over to the Dialup
port. The default is 4.
7. Enter Apply to save your settings or Cancel to revert to the previous settings.

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 be available since private addresses cannot be
routed on the Internet.
Dynamic DNS (DDNS) is an Internet service that allows routers with varying public IP addresses
to be located using Internet domain names. To use DDNS, you must setup an account with a
DDNS provider such as DynDNS.org, TZO.com, or Oray.net.
Once you have registered your domain name to their IP address, all FQDN traffic will be directed
to your frequently-changing IP address. (For rollover mode, you will need a fully qualified domain
name to implement features such as exposed hosts and virtual private networks regardless of
whether you have a fixed or dynamic IP address.)
2-14 Connecting the FVS338 to the Internet
v1.0, March 2009