Ironically enough if you do not know what a firewall actually does (and saying it "protects" against "stuff is NOT enough) IMHO you do need one. That being said unless you know what you are doing, better leave it to the default one with default settings.
Ironically enough if you do not know what a firewall actually does (and saying it "protects" against "stuff is NOT enough) IMHO you do need one. That being said unless you know what you are doing, better leave it to the default one with default settings.