D-Link NetDefend Firewall Series Manual page 4

Shared secret:
Select Passphrase and enter a shared secret
Click Ok.
3. Firewall A – IPsec interface
Go to Interfaces -> IPsec.
Add a new IPsec Tunnel.
In the General tab:
General:
Name: fwB-ipsec
Local Network: lannet
Remote Network: fwB-remotenet
Remote Endpoint: fwB-remotegw
Encapsulation Mode: Tunnel