Block outgoing network traffic

runs on Mac
screenshot of TCPBlock

You've got a firewall to keep the Internet and all that flies around on it out of your machine. Or perhaps more properly, you use it to decide what to let in and what to keep out. But what about stuff moving the other direction? What about things on your machine that want to reach out and touch someone, especially when they decide to do that on their own? Maybe it's just something misconfigured on your system, or maybe it's some bit of malware with a mind of its own that has decided to phone home with your personal information.

TCPBlock is a tool that lets you decide which apps on your system you want to let have access to the world. Whitelist an app, or keep a particular program from connecting. Or if everything goes sideways, you can block all outgoing traffic. Now you're in control of both incoming and outgoing data from your machine. And maybe you'll be able to sleep a little better at night.

TCPBlock is a free download. It's a Mac application and runs on systems under OS X 10.5 and later.

Download TCPBlock

One Response to “Block outgoing network traffic”

  1. Duncan says:

    Thank you! I have a good firewall on all my Windows PC’s, so why shouldn’t I have one on my macs? There’s little snitch, but that costs a pretty penny for something so simple.