This article describes how to configure an IPSec VPN on a FortiGate unit to work with the VPN feature of a ZyXEL ZyWALL 2 Firewall. Components: All FortiGate units running FortiOS 3.0 & 4.0. ZyXEL ZyWALL 2 Firewall with v4.01 firmware; Steps or Commands: Configure FortiGate VPN Phase 1. To configure using the Web-based Manager:

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