NETGEAR DGFV338 Chapter 5 Virtual Private Networking

Virtual Private Networking 5-1
v1.0, April 2007
Chapter 5
Virtual Private Networking
This chapter describes how to use the virtual private networking (VPN) features of the ProSafe
DGFV338. VPN tunnels provide secure, encrypted communications between your local network
and a remote network or computer.
Dual WAN Port Systems
The ADSL port and the Ethernet port of the ProSafe DGFV338 can be configured for auto-rollover
mode for increased system reliability (if both ports are configured) or, if only one of the ports is
configured, they can be configured as either Dedicated ADSL or Dedicated Ethernet. This WAN
mode choice then impacts how the VPN features must be c onfigured.
Tip: When using dual WA N port networks, use the VPN Wizard to configure the basic
parameters and them edit the VPN and IKE Policy screens for the various VPN
scenarios.
Table 5-1. IP addressing requirements for VPNs in dual WAN port systems
Configuration and WAN IP address Rollover Modea
a. All tunnels must be re-established after a rollover using the new WAN IP address.
Dedicated Mode
VPN Road Warrior
(client-to-gateway)
Fixed FQDN required Allowed (FQDN optional)
Dynamic FQDN required FQDN required
VPN Gateway-to-Gateway Fixed FQDN required Allowed (FQDN optional)
Dynamic FQDN required FQDN required
VPN Telecommuter
(client-to-gateway through a
NAT router)
Fixed FQDN required Allowed (FQDN optional)
Dynamic FQDN required FQDN required