Using Ddns And Fully Qualified Domain Names (Fqdn - NETGEAR FVS328 Reference Manual

Model FVS328 ProSafe VPN Firewall with Dial Back-up Reference Manual
10.5.6.0/24
Gateway A
LAN IP
10.5.6.1
Figure G-1: Addressing and Subnet Used for Examples

Using DDNS and Fully Qualified Domain Names (FQDN)

Many ISPs (Internet Service Providers) provide connectivity to their customers using dynamic
instead of static IP addressing. This means that a user's IP address does not remain constant over
time, which presents a challenge for gateways attempting to establish VPN connectivity.
A Dynamic DNS (DDNS) service allows a user whose public IP address is dynamically assigned
to be located by a host or domain name. It provides a central public database where information
(such as email addresses, host names and IP addresses) can be stored and retrieved. Now, a
gateway can be configured to use a 3
address to establish bi-directional VPN connectivity.
To use DDNS, you must register with a DDNS service provider. Example DDNS Service
Providers include:
Example DDNS Service Providers
Table G-1.
DynDNS www.dyndns.org
TZO.com netgear.tzo.com
ngDDNS ngddns.iego.net
In this example, Gateway A is configured using an example FQDN provided by a DDNS Service
provider. In this case we established the hostname netgear.dyndns.org for Gateway A using the
G-2
VPNC Example
Network Interface Addressing
WAN IP
FQDN
netgear.dydns.org
party service in lieu of a permanent and unchanging IP
rd
NETGEAR VPN Configuration FVS318 or FVM318 with FQDN to FVS328
May 2004, 202-10031-01
Gateway B
WAN IP
22.23.24.25
172.23.9.0/24
LAN IP
172.23.9.1