Why would you want to run a personal firewall on a OS that has been obsolete for over eight (or three) years now? Just use the built-in firewall and god forbid if your router doesn't have a FW built-in.
Thank You, enough for my ''oldtimers'' ;o) PS: @ https://forums.mydigitallife.net/members/extremelyfancyusername.1163146/ A running System is never ''obsolete'' to me - no chance for e-waste ! [o;