Go to `Network > Interfaces`
Edit the interface used for captive portal
Confirm `Captive Portal` is enabled
Check the `Authentication Portal` or `Portal` settings
Verify the `Authentication Rule`...
Connect to the FortiGate management interface
Go to System
Go to Settings or Administration, depending on FortiOS version
Enable SSH under Administrative Access for the desired interface
Save...
Connect to the FortiGate using SSH with a terminal client
Log in with an administrator account
Use the FortiGate console port with a serial console cable...
Verify HA status on both FortiGate units
Confirm one unit is primary and the other is secondary
Check HA synchronization status
Verify cluster heartbeat links are up
Confirm...
