Virtual Private Networking Using Ipsec Connections; Considerations For Multi-Wan Port Systems - NETGEAR SRX5308 - ProSafe® Quad WAN Gigabit SSL VPN Firewall Reference Manual

This chapter describes how to use the IP security (IPsec) virtual private networking (VPN) features
of the VPN firewall to provide secure, encrypted communications between your local network and
a remote network or computer. This chapter contains the following sections:
• "Considerations for Multi-WAN Port
• "Using the IPsec VPN Wizard for Client and Gateway Configurations" on page 5-3
• "Testing the Connections and Viewing Status Information" on page 5-16
• "Managing IPsec VPN Policies" on page 5-20
• "Configuring Extended Authentication (XAUTH)" on page 5-37
• "Assigning IP Addresses to Remote Users (Mode Config)" on page 5-42
• "Configuring Keepalives and Dead Peer Detection" on page 5-55
• "Configuring NetBIOS Bridging with IPsec VPN" on page 5-59

Considerations for Multi-WAN Port Systems

If two WAN ports of the VPN firewall are configured, you can enable either auto-rollover mode
for increased system reliability or load balancing mode for optimum bandwidth efficiency. Your
WAN mode selection impacts how the VPN features must be configured.
The use of fully qualified domain names (FQDNs) in VPN policies is mandatory when the WAN
ports function in auto-rollover mode or load balancing mode, and is also required for VPN tunnel
failover. When the WAN ports function in load balancing mode, you cannot configure VPN tunnel
failover. An FQDN is optional when the WAN ports function in load balancing mode if the IP
addresses are static, but mandatory if the WAN IP addresses are dynamic.
See "Virtual Private Networks" on page B-9
requirements for VPNs in the dual WAN modes. For information about how to select and
configure a Dynamic DNS service for resolving FQDNs, see
page 2-27. For information about WAN mode configuration, see
page 2-16.
Virtual Private Networking
Using IPsec Connections
Systems" on this page
for more information about the IP addressing
"Configuring Dynamic DNS" on
v1.0, April 2010
Chapter 5
"Configuring the WAN Mode" on
5-1