Netgear FVS318N – Prosafe Wireless N VPN Firewall 参照マニュアル

After you have used the VPN Wizard to set up a VPN tunnel, a VPN policy and an IKE policy 

are stored in separate policy tables. The name that you selected as the VPN tunnel 
connection name during the VPN Wizard setup identifies both the VPN policy and IKE policy. 
You can edit existing policies, or manually add new VPN and IKE policies directly in the policy 
tables. 

The Internet Key Exchange (IKE) protocol performs negotiations between the two VPN 
gateways and provides automatic management of the keys that are used for IPSec 
connections. It is important to remember that:

An automatically generated VPN policy (auto policy) needs to use the IKE negotiation 

protocol.

A manually generated VPN policy (manual policy) cannot use the IKE negotiation 

protocol. 

IKE policies are activated when the following situations occur:

The VPN policy selector determines that some traffic matches an existing VPN policy of 
an auto policy type.

The IKE policy that is specified in the Auto Policy Parameters section of the Add VPN Policy 
screen (see 

remote VPN gateway.

An IKE session is established, using the security association (SA) settings that are specified 

in a matching IKE policy: 

Keys and other settings are exchanged.

An IPSec SA is established, using the settings that are specified 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, 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.