Block/Ban an IP address

well mac os x uses ipfw, the same thing *BSD uses, so if you just get the terminal commands for *BSS then they will work, o block an ip it would be like this

sudo ipfw add deny from xxx.xxx.xxx.xxx to any

type that into a terminal and it will block access to the ip, but i think your settings will get lost at shutdown

you also might want to search versiontracker, Flying Buttress seems to be an application that allows for easy edition of ipfw, but i have never used it (though it seems to have a good rating on versiontracker)

well i tested it now, and i guess its a little then BSD, do this, i tested it and it works

sudo ipfw add deny src-ip 192.168.1.20
sudo ipfw add deny dst-ip 192.168.1.20


first one blocks inbound traffic, second blocks outbound traffic