FortiGate: Check SSL VPN Connection Timeouts with CLI.
How to check SSL VPN connection time-out with the CLI command. By default, an SSL VPN connection logs out after 8 hours. This will show how to check the timeout with the CLI command.
- Log in to the web admin console.
- Go to the menu CLI Console.

- Enter the command "config vpn ssl settings" and "Enter".
config vpn ssl setttings

- Type "show" to view settings.
show

- Looking for topic "set auth-timeout".

- If it cannot be found, the topic value. User command "show full-configuration"
show full-configuration

- Now we can see the configuration about "set auth-timeout 28800". It means the time out is 8 hours (28800 sec. = 28800/60/60)