Use a Software Firewall:

[Mahmud]

Use a Software Firewall:
  A firewall lets the computer user monitor requests from programs on the Internet wanting to access your computer, and requests from programs on your computer that want to access the Internet. Controlling program access to the Internet is important because some malware must "phone home" to download to your computer the files that cause the damage. Free and for-fee firewall programs are available - the most popular firewall being ZoneAlarm Free Firewall. Check out our tutorial, Using Free ZoneAlarm.