You may be able to turn off Norton Firewall, then reboot and use the Windows firewall.
https://support.norton.com/sp/en/us/home/current/solutions/v64908971
We have a poll in the forum that recommends different antivirus products that GlassWire fans use. Scroll to the top of the thread to see the results.
https://forum.glasswire.com/t/what-windows-antivirus-do-you-use-2020/