This manual describes the IPSec VPN features of the FortiGate firewall. It includes IPSec VPN technology, key management, security combinations, tunnel negotiation, network topology, compatibility with IPSec VPN products, using authenticated IPSec VPNs, using pre-shared key IPSec VPNs, pre-shared key IPSec VPN examples, using a single password for VPN endpoint (client) authentication examples.
The manual describes how to configure and manage VPN connections on FortiGate devices, covering IPSec, PPTP, and L2TP VPN types. It includes command‑line examples for restoring configurations, setting system operation modes, and adjusting interface access.
Additional sections cover firewall IP‑MAC binding, system interface settings, and a full index of VPN types and related commands, helping administrators deploy and maintain secure VPN services on FortiGate appliances.
| System Operation Modes | nat, transparent |
|---|---|
| Restore Config Command | restore config |
Use the command restore config
Run set system opmode nat or set system opmode transparent to select the desired mode.
Configure the interface with set system interface internal config allowaccess ping to enable ping traffic.