Dual Firewalls

Firewalls help prevent the sending of unauthorized data into our out of your network.

Not all firewalls are created equal, so make sure that your rules are appropriate and that you employ both application firewalls as well as network firewalls.

Network Firewalls

Hardware and software that intercepts specific port ranges.

Application Firewalls

Software that intercepts specific applications and defines outgoing rules to prevent spyware from phoning home.

Letting games through: games are often full-screen and may hide the Snitch permission request window. Be sure to add an "Any connection forever" rule to your games.

Zone Alarm for Windows

Little Snitch for Mac

Little Snitch http://www.obdev.at/products/littlesnitch/index.html

App firewalls couldn't detect if a trusted application had its code modified to send out data on behalf of another virus.