Zone Alarm Free Firewall

Next thing to have after a good antivirus software is a good firewall. Basically, some of the antivirus software that requires fee has already included a firewall protection into your pc. In fact, in Microsoft operating system, there are also a built in firewall.

"A firewall is a part of a computer system or network that is designed to block unauthorized access while permitting authorized communications. It is a device or set of devices configured to permit, deny, encrypt, decrypt, or proxy all (in and out) computer traffic between different security domains based upon a set of rules and other criteria." - wikipedia.

If you already have a good antivirus which does not include a firewall, then ZoneAlarm firewall is worth a try. It is a free software after all, but only for personal usage. With this firewall, you are able to set preference according to your required settings, such as controlling which software from your will have access to the internet, authorising only some friends to access your pc, and lots more. Besides, you are able to view who have accessed your pc, and tried to access your pc by viewing the alert log.

If you aren't satisfy with only a basic firewall, then you can try and invest for a full internet security suit offered by ZoneAlarm. They offers a two way protection firewall system, blocks virus and spyware, protects against identity theft, filters and stop email spams, and credit monitoring services. You can download or learn more information of this wonderful product from here.