If your home computer is connected to the internet, or to other computers that are connected to the internet - you need a firewall. It’s as simple as that.

Hackers and hacker software are constantly probing the internet for computers without a firewall. When such a computer (A.K.A. “victim”) is found, it is targeted with spyware, viruses, trojans, key stroke loggers and anything else a deviant mind can devise. If you don’t want to be a victim, then you need to protect yourself.

How not to be a victim.

Here are 2 really great personal firewall programs that are absolutely free for personal use.

Comodo

Comodo is free for home use. You may be wondering why a company would give away a program for free that is sold for $40 and more by other companies. This thought alone is often enough for many computer owners to skip the free alternative and shell out the money for the “internet protection” software suites.

This is a very normal concern, but here are some things to consider that will probably alleviate those worries.

1). Take a look at those Internet protection suites and see what’s included.
Often times, it’s not just a firewall but anti spyware, anti virus, web filters, system tuning and maintenance - in other words, the kitchen sink! This is because the makers of the all-inclusive software suites know that each piece isn’t worth the full price alone, or they would charge for each piece. So they package them all together and charge one price hoping you’ll need at least one of those products enough to buy the whole suite.

2). Most free alternatives offer a slim feature set in the free version, but increased features for the professional version. Also, the free version is often times only free for indiviual use, not businesses. So the company or developer makes money from business use.

That being said, the free versions of Comodo and Zonealarm are more than enough for most home users.

Comodo Features (courtesy of the Comodo website):

• Complete protection from Hackers, Spyware, Trojans and Identity theft
• Host Intrusion Prevention System stops malware from being installed
• Free Download. No charges or license fees ever
• Powerful and intuitive Security Rules Interface
• ‘Smart’ Popup Alerts
• Application Behavior Analysis
• Automatic ‘Firewall Training’ mode
• Windows Security Center Integration
• Self Protection against Critical Process Termination
• Application Recognition Database
• Automatic Updates
• Improved Firewall Event Logging
• Submit Suspicious Files to Comodo

System Requirements (version 3.9)

• Windows XP - 32 and 64 bit versions
• Windows Vista - 32 and 64 bit versions
• 64 Mb RAM
• 50 Mb free disk space

You can read more about the benefits Comodo Firewall here.
You can download Comodo Personal Firewall here.

ZoneAlarm

ZoneAlarm started as a free only firewall, but experienced significant success and rapidly evolved into a Pro verison. I have used ZoneAlarm on my personal computers for years, with great results. When gathering links for this article, I realized it’s become pretty difficult to find the free for persoanla use version. It seems that ZoneLabs (the maker of ZoneAlarm) has gotten aggressive in promoting their professional (read: not-free) version. so far, the actual software has remained ad free, so I can’t complain too much.

Features:

• Systematically identifies hackers and blocks access attempts
• Automatically makes your computer invisible to anyone on the Internet (Stealth Mode)
• Intrusion Blocking systematically identifies hackers and blocks access attempts.
• Stealth Mode automatically makes your computer invisible to anyone on the Internet.
• Automatic Program Configuration provides safety and simplicity by automatically configuring programs. Automatically decides whether to allow or deny Internet access to individual programs.
• Expert Controls give savvy users precise control over security settings.

You can download ZoneAlarm Free here.

Conclusion

As I said, I’ve used ZoneAlarm for years and love it. I have only been using Comodo for a little over a year on my laptop and have had no problems with it.

The only downside to both is that the learning mode can be confusing for inexperienced users. Often times a popup will display asking the user if they want to allow application XYZ to act as a server. Most inexperienced users don’t know what the hell that means and can get flustered. What I’ve done is after installing the firewall, I run all known internet user apps (browser, IM chat, anti-virus update, email, etc…) to “teach” the firewall that these are certified apps. After that, I tell the user (usually a relative or close friend) if it prompts you in the future click “no” or call me.

Comodo advertises “Comodo Firewall offers the highest levels of perimeter security against inbound and outbound threats” I tend to believe them only because I’ve found that comodo prompts me WAY more than Zonealarm. It seems that Comodo distinguishes how a url was requested by a browser. For example, if the user clicks a link from a word doc, then Comodo will interrupt and inform the user that another application has requested the browser load “.. www.abc.com…” This is great for experienced users, but will definitely be too much for the inexperenced grandma looking to chat with the grand kids… In that situation, I would recommend ZoneAlarm.

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