Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I want to prevent certain applications from accessing the internet. When I was using windows XP I had an application (i think it was Zone alarm) which always notified me when an application tried to access the internet. I wonder if there is an application in Ubuntu which would do the same task. If it is possible, please suggest a gui application.

the problem is, my internet provider allows me to connect to a single host at a time, that means no two applications can use internet at the same time. When i checked system monitor it showing me that internet is working fine still my browser cant browse.So i want to kill the other application using the internet to browse.

share|improve this question
Possible duplicate.… – Basharat Sialvi Apr 27 '12 at 17:57
Arun, you should edit your post to mention the application. Was it a firewall? I know that firewalls in Windows allow users to control which applications can access the internet. – user25656 Apr 27 '12 at 18:18
For Iphone - Disable the mobile data. Go to Setting, General, and off the Cellular-mobile data – user164503 Jun 5 '13 at 0:10

You can use apparmor.

AppArmor ("Application Armor") is a security module for the Linux kernel, which allows the system administrator to associate with each program a security profile that restricts the capabilities of that program.

You can use deny statements to prevent applications to access network. Take a look into this tutorial for more information.

share|improve this answer
That's an interesting program. – Anwar Shah May 30 at 8:18

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.