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delantis.com
TCPBlock is a lightweight and fast application firewall for Mac OS X 10.5 or later developed by delantis.com. The Mac OS X firewall protects you from connections that come from outside of your computer. But what about the software from your computer that opens new connections to the internet? With TCPBlock you can prevent selected applications on your computer from opening connections to the network.
TCPBlock is implemented as a loadable kernel module which contains all the blocking logic. You can configure it in the System Preferences TCPBlock preference pane or with the tcpblock
TCPBlock is implemented as a loadable kernel module which contains all the blocking logic. You can configure it in the System Preferences TCPBlock preference pane or with the tcpblock
What's New
Version 2.10:
- Filter UDP Protocol.
- Report if apps are connecting over TCP or UDP.
- Improved logging.
- Incompatibility with nginx resolved.
Requirements
PPC / Intel, Mac OS X 10.5 or later.
PPC / Intel, Mac OS X 10.5 or later.
TCPBlock User Discussion (Write a Review)
Overall:
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TCPBlock is a lightweight and fast application firewall for Mac OS X 10.5 or later developed by delantis.com. The Mac OS X firewall protects you from connections that come from outside of your computer. But what about the software from your computer that opens new connections to the internet? With TCPBlock you can prevent selected applications on your computer from opening connections to the network.
TCPBlock is implemented as a loadable kernel module which contains all the blocking logic. You can configure it in the System Preferences TCPBlock preference pane or with the tcpblock command line utility. All the configuration changes are made persistent in a configuration file on the hard disk. At system boot time the TCPBlock kernel extension reads its configuration from disk and is ready to go.
TCPBlock is implemented as a loadable kernel module which contains all the blocking logic. You can configure it in the System Preferences TCPBlock preference pane or with the tcpblock command line utility. All the configuration changes are made persistent in a configuration file on the hard disk. At system boot time the TCPBlock kernel extension reads its configuration from disk and is ready to go.
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GeoProf reviewed on 09 Nov 2011
If anyone else has had the same sort of doubts about Little Snitch or Hands Off over the years, do yourself a favor and install TCPBlock, then run it side-by-side with Little Snitch (or Hands Off!) for a week or two. After you get over the short learning-hump, you'll be amazed.
And it's free!
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Does the developer of this security app instruct other developers how to get around it? If so, that's a violation of trust that would make TCPBlock not only useless but dangerous, freeware or not. So please expound your point so we can all understand, especially those of us that do not use the CLI.
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I'm probably overcurious about this because in just 3 days TCPBlock has already helped me discover callouts by 2 apps that Little Snitch has never alerted me to, so I really want to continue using it and would be bummed if it turned out to be evadable (to coin a term). The number of callouts developers are building into their apps these days is alarming, and I get really pissed when so many of them are pointless. I downloaded a music app a few months ago (can't remember its name) that called out to over 110 distinct locations (I logged each one) before I just quit counting and uninstalled the ulcerous junk!
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Supershuttle reviewed on 07 Aug 2011
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Thomas-Duvrai reviewed on 24 Jun 2011
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sebos reviewed on 13 Dec 2010
It's not perfect in term of flexibility but it's allow you to safely protect your computer and control all the access.
(you can always use the shell to do some complex manipulations).
I work nice in 64bit and the process is not heavy (memory and cpu).
Again thanks a lot for this great app.
I got no crash since the 2.7 version, so i can consider that this app is now stable (first priority for a "firewall").
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I installed v2.6, restarted and tried to open the pref pane.
I got an error saying that tcpBlock wasn't correctly installed.
I found an error message in the console that said that no code for running kernel's architecture was found.
Too bad, that sounded like a fine replacement to little snitch !
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1) Whitelist sometimes doesn't stick: i.e., items I add to the Application List disappear from the list after a reboot. This has happened for Unix daemon programs rather than GUI apps.
2) On wake, I've gotten a Growl notification that a daemon has been blocked, but when I open the prefpane, it's not on the list of Connecting Apps so that it can be added to the whitelist.
2) This is so because at the time the notification was sent the prefpane was not open. The Connecting Apps tab maintains no backlog of connections. You can see just the network activity from the time on you open it.
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2) Yes, I figured out the prefpane needs to be open and set up my login to do so.
1) Hasn't happened again. If it does, I will send details.
MercuryNu rated on 14 Aug 2011
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Zuulito rated on 02 Dec 2010