Get a hardware firewall, doesn't take any of your resources and you can tell people with terrible coputers that your firewall is better that their computer.
If you choose to go with the above loook at smoothwall or ip cop
or if you want a software have a look a sygate though it got taken over recently so it mioght of gone bad or not free.
If you choose to go with the above loook at smoothwall or ip cop
or if you want a software have a look a sygate though it got taken over recently so it mioght of gone bad or not free.