Hey Guys,
It seems like the gsad --timeout command doesn’t actually make the change to the greenbone-security-assistant.service file.
Found the resolution to this by hardcoding the timeout switch directly into /lib/systemd/system/greenbone-security-assistant.service file.
ExecStart=/usr/sbin/gsad --foreground --listen=0.0.0.0 --port=443 --listen=0.0.0.0 --mport=9390 --allow-header-host IP or Hostname --timeout=1440
This line will allow you to access GSM GUI via https and over whichever port you set (here it’s 443), as well as setting the GUI user timeout to 24 hours.
Cheers!