The idle timeout period is the amount of time that an administrator will stay logged in to the GUI without any activity. This is to prevent someone from accessing the FortiGate if the management PC is left unattended. By default, it is set to five minutes.
A setting of higher than 15 minutes will have a negative effect on a security rating score. See Security rating for more information.
- Go to System > Settings.
- In the Administration Settings section, set the Idle timeout to up to 480 minutes.
- Click Apply.
config system global set admintimeout <1-480> end