Information
SSH login grace time <= 30 seconds. When logging into the console using SSH, the default time of inactivity to successfully log into the FortiGate unit is 120 seconds (2 minutes). You can configure the time to be shorter which in turn will provide a less desirable target for attackers.
Solution
Issue the following command to configure SSH login grace time.
config system global
set admin-ssh-grace-time <time_int>
end