Little snitch is a fantastic little app. Using little snitch you can block outgoing connections on your mac.

its like a reverse firewall for your mac.
it allows you to block apps from connecting to the internet without your permission :)

you can download it from

1 Comment

pepitown · July 12, 2012 at 4:30 pm

works on LAN? to block connections for FCP for example? Thnks