Today, the Internet is reminiscent of the wildest days of the Wild, Wild, West. Your stagecoach through the World Wide Web can be hijacked at any instant if you have no knight in firewall armor to ward off any viral intruders. When your computer is connected to the internet with no firewall running, it is vulnerable to attack from spammers, hackers and phishers.
Much like human viruses, computer viruses run the gamut from the benign to the fatally destructive to the computers they infect. And just as with human viruses, prevention is better than cure. Prevention begins by stopping them in their tracks at the portals of contact. This is where a firewall can come in handy.
An anti-spam firewall application will, to an extent, help in keeping viruses at bay. There is, however, no firewall that is 100% hacker proof - there are too many ways in which viruses can be embedded in a software download or regular data, for a firewall to detect and catch them all. However there are some relatively effective firewall programs available on the market, and some of them are actually free for your personal use.
At the bare minimum a home personal computer that is connected to a cable modem or a full time connection needs to have and run a personal firewall software program, as well as anti-spyware and some type of anti-viral program.
