If you need to access the firewall through a remote connection:
you need to have access to linux on a linux PC, a Mac PC, or a Windows PC with WSL (Windows Subsystem for Linux) installed
you need to have access to the SSH private key for my current laptop
open a terminal window on linux, then establish a tunnel to the location you need access to with ssh -p <external_ssh_port> -i <ssh_private_key> -L 10443:192.168.1.1:443 your.location.tld
The connection will not be trusted as there is no SSL certificate for localhost or cerberus or hygieia, but you can ignore the warning and accept the exception