ZyXEL Communications ISG50-ISDN Application Note page 66

ISG50 (Main Office):
Click on the Add button to add a VPN gateway rule.
To configure the VPN gateway rule, the user needs to fill in the following information:
- VPN gateway name.
- Gateway address: My Address (ISG50's IP) and Peer Gateway Address (USG's IP).
- Authentication setting.
-Shared Key
ID Type setting (Local and Peer side)
- Phase-1 setting
Negotiation mode
Encryption algorithm
Authentication algorithm
Key Group
66