HOW FIREWALLS WORK

2007-12-14T07:12:00.000-08:00

The physical firewall is used to stop spreading of fire from one side to other. Similarly computer firewalls are used to protect the computer systems from accessing the files by unauthorized personnel.
Once an unauthorized person has got access to your computer, he or she can spread malicious codes through your computer. They can steal your valuable data. For example they can steal your credit card number or any other information.
A firewall not only stops this kind of events taking place but also keeps the malicious file out of your computer so that it can't spread to your other files. That's why it's called a firewall because its job is similar to a firewall that keeps a fire from spreading from one area to the other.
If a hacker tries to invade your computer files to get your passwords and credit card numbers you have used for online purchases he simply can't get his task accomplished. Computer firewall software will allow good data in but blocks all suspicious data from entering into your computer.
Good data is when you are surfing the Internet, visiting web sites, downloading photos or data files. Suspicious data means hacker programs, or anything that spies on your computer without your knowledge.
When computer firewall protection is enabled, everything that goes in and out of your computer is monitored. With the malicious programs on the Internet today it's also a way to prevent spyware and adware from getting into your computer.
Many people think that the anti-virus software that came with their computer protects them from hackers. While it's important to keep anti-virus software updated for viruses it does nothing to secure your computer against direct hacker attacks.
Whether you have a dial-up, cable, broadband or DSL connection, every minute that your computer is connected to the Internet, it is at risk. Hackers are looking to do you harm and even steal your identity. Identity theft is one of the fastest growing crimes today.
One of the most effective ways to guard your personal information and keep these criminals away from your sensitive passwords and credit card numbers is the use of computer firewall protection.