Super User is a question and answer site for computer enthusiasts and power users. 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

This question already has an answer here:

I really want to know how can I prevent a program to connect to Internet with Windows 7 firewall?

I have smart security nod32 business edition installed on my computer.
should i do this job with nod or there is a way in Windows Firewall?

share|improve this question

marked as duplicate by Ƭᴇcʜιᴇ007, Mokubai, Carl B, Tog, Dave Aug 27 '13 at 11:43

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

up vote 65 down vote accepted

Basically you do this to prevent a program from connecting to the Internet:

  1. From start menu, search for "Firewall" and select Windows Firewall with Advanced Security

  2. Choose Outbound Rules from the tree at the left.

  3. Choose New Rule... from the menu at the right.

  4. New Outbound Rule Wizard opens. This is really easy now:

    a. Select Program as rule type.

    b. Select the program's EXE file.

    c. Choose Block the connection.

  5. Choose the profile this rule applies to. If in doubt, select all three.

  6. Add the descriptive name (you may want to delete this rule later).

You're done.

share|improve this answer
Windows Firewall is definitely the easiest way to go. – studiohack Feb 5 '12 at 16:07
For Windows XP? – rohan-patel Apr 20 '13 at 13:12
For those of you wondering I'd like to note that you don't need to restart the application or anything; The rule takes effect immediately. – MasterMastic Aug 25 '13 at 5:41

You can prevent the program from accessing the internet through Windows Firewall.

Or if you know the address it tries to connect to simply add a rule in you hosts file and let it connect to your loopback address :-)

share|improve this answer

If you're using nod32's firewall, you should block it through that, and disable windows firewall. It's usually recommended not to run two firewalls at the same time, as they can conflict. If you still want to block a program with Windows Firewall, here is a good tutorial.

Edit: Just did a bit of reading and apparently NOD32 doesn't have a firewall, so ignore that.

share|improve this answer

If you wish to use a 3rd party outbound firewall, this is a good one, they have a Free and a Paid version, Free one works well.


share|improve this answer

Not the answer you're looking for? Browse other questions tagged .