Quick Reference Guide

ProSafe Wireless-N VPN Firewall SRXN3205 Reference Manual
Virtual Private Networking Using IPsec 6-13
v1.0, January 2010
IKE policies are activated when the following occur:
1. The VPN Policy Selector determines that some traffic matches an existing VPN policy. If the
VPN policy is of type “Auto”, then the Auto Policy Parameters defined in the VPN policy are
accessed which specify which IKE Policy to use.
2. If the VPN policy is a “Manual” policy, then the Manual Policy Parameters defined in the
VPN Policy are accessed and the first matching IKE policy is used to start negotiations with
the remote VPN gateway.
• If negotiations fail, the next matching IKE policy is used.
• If none of the matching IKE policies are acceptable to the remote VPN gateway, then a
VPN tunnel cannot be established.
3. An IKE session is established, using the SA (Security Association) parameters specified in a
matching IKE policy:
• Keys and other parameters are exchanged.
• An IPsec SA (Security Association) is established, using the parameters in the VPN
policy.
The VPN tunnel is then available for data transfer.
When you use the VPN Wizard to set up a VPN tunnel, an IKE policy is established and populated
in the List of IKE Policies table, and is given the same name as the new VPN connection name.
You can also edit exiting policies or add new IKE policies from the IKE Policies screen.
The IKE Policies Screen
To access the IKE Policies screen:
Select VPN > IPsec VPN from the main/submenu. The IPsec VPN submenu tabs appear with the
IKE Policies screen in view.
Figure 6-13