I want to configure my Firebox using the console port, but I don't know how to access the console port. I'm using it for the first time, so I don't know how to use it, so I'd appreciate it if you could tell me in detail.
All documentation is here, including the Fireware Command Line Interface Reference:https://www.watchguard.com/wgrd-help/documentation/xtm
See the "Connect with a Serial Cable" part in the "Start the Command Line Interface" section of the above document.
FYI - most admins use the Web UI or WSM Policy Manager to manager their WG firewalls, not the CLI.