SnapGear 2.0.1 - Manual (Page 139)

Virtual Private Networking
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Enter a secret in the Preshared Secret field. This must remain confidential. In this
example, enter the Preshared Secret used at the branch office CyberGuard SG
appliance, which was: This secret must be kept confidential.
Select a Phase 1 Proposal. In this example, select the 3DES-SHA-Diffie Hellman
Group 2 (1024 bit) option (same as the Branch Office Phase 1 Proposal).
Click the Continue button to configure the Phase 2 Settings.
Phase 2 settings page
Set the length of time before Phase 2 is renegotiated in the Key lifetime (m) field. In this
example, leave the Key Lifetime as the default value of 60 minutes.
Select a Phase 2 Proposal. In this example, select the 3DES-SHA-Diffie Hellman
Group 2 (1024 bit) option (same as the Branch Ofiice Phase 2 Proposal).
Define the Local Network behind the CyberGuard SG appliance that is to have access
through the tunnel. In this example, enter 192.168.1.0 / 255.255.255.0 in the field.
Define the Remote Network behind the remote party that is to have access through the
tunnel. In this example, enter 192.168.2.0 / 255.255.255.0 in the field.
Click the Apply button to save the tunnel configuration.