Back then in that OS
The idea of a firewall was more an Windows problem. That is there was no reason to firewall the Apple OS. Still isn't.
All this sounds like the old apple needs repair or maybe a fresh install of the OS.
It appears you are upset with me over this failed old hardware. I've seen folk like that and they are rarely happy about how we usually can fix it with another box. Old Macs are found on ebay here for not much so why not swap in a good box?