If anyone asks you to explain firewall basics or to explain why a firewall is necessary, a good starting point is Robert Hummel’s article. The article was written in 2000 and it is gives a basic understanding of protecting the computer from internet dangers.
Costs should not be a barrier in having this primary protection. Here are three free firewall programs (in random order):
1. Comodo Free Firewall
2. PC Tools Firewall Plus
3. Outpost Firewall
Other computer users may have their personal favorites, in terms of free firewalls or ones that are purchased. The firewall is one program with which you should have a good working knowledge. It prevents a whole load of problems when you know what you are receiving and what you are sending over the internet.
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Well, #3 firewall have turned into modern, effective and user-friendly security suite - Agnitum Outpost Security Suite. I use it, and it's really good with all built-in firewall, anti-virus, anti-spam, anti-spyware. I guess you can pay a little to be protected well while online.
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