You can have heard the term firewall before but have you ever wondered how does a firewall act and why do we require one? A computer firewall guards your computer by putting up a wall to keep anyone from accessing your files when you are surfing the Internet.

Once a hacker get access to your files malicious codes broaden through your computer retrieving your personal information that the hacker can use to steal your identity or charge items with your credit card numbers.

A firewall not only prevents this from happening but keeps the malicious file out of your computer so it can’t expand to your other files. That’s why it’s called a firewall since its job is similar to a firewall that keeps a fire from spreading from one area to the next.

If a hacker tries to invade your computer files to catch your passwords and credit card numbers you’ve used for online purchases he basically can’t get access. Computer firewall software will allow good data in but blocks all bad data from entering your computer.

Good data is when you are surfing the Internet, visiting web sites, downloading photos or data files. But bad data, like hacker programs, or anything that spies on your Internet habits without your knowledge is not allowed.

When computer firewall protection is enabled, everything that goes in and out of your computer is monitored. With the amount of malicious programs on the Internet today it’s also a way to preclude 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 danger. Hackers are looking to do you harm and even steal your identity. Identity theft is one of the fastest growing crimes today.

One of maybe helpful ways to guard your personal information and keep these criminals away from your sensitive passwords and credit card numbers is the expend of computer firewall protection.

In the real world a “fire wall” is a fireproof wall that is built to stop the spread of fire from one part of a building to others. In the Internet world a
firewall has a similar purpose in that it stops the spread of harmful viruses and attacks from entering your home or office network.

Because of the ever-increasing threats that are appearing on the Internet you no longer have to be in business to call for the protection of a fire wall. In fact, all computer that is connected to the internet ought to have one installed. You’ll be a lot happier once you be familiar with that you have protected your personal files, information, and financial data, such as credit cards and bank account numbers, from being shared with every hijackers on the internet.

Here are a quantity of questions that you should consider before you choose a fire wall for your PC:

Do I want to be protected from viruses, Trojan horses and worms?

Am I at risk because I use programs that access the Internet automatically?

How much am I willing to spend on a firewall solution?

And here are the common features that are available in almost any software-based fire wall program:

-Inbound filtering – protects unknown users or programs from accessing your PC

-Outbound filtering – Protects your PC from sending information to the Internet without your permission.

-Application integrity verification – Verifies that any program you are running aren’t sneaking around behind your back and doing things that they shouldn’t be doing.

-Data encryption – Automatically scrambles any sensitive data that you do allow to be transmitted.

-Pop-up ad blocking – Stops those annoying ads.

-Stealth mode – Hides that fact that your PC is even connected to the Internet so that hackers can’t see you.

-Spyware protection – Blocks dangerous spyware from operating on your PC

-Cookie blocking – prevents web sites from sending you cookies without your permission

There are numerous software-based firewall programs that can be downloaded from the internet. Most of them come with free trials so you can analyze each one and choose what’s best for you. Even if you won’t have to be King Geek to install and set up your firewall, there are some adjustments and settings that will have to be tweaked. All of the better firewall programs come with decent instructions and many of the products have help available at their web site.

If you notice that some program that used to work stops working after you install a fire wall then you’ll have to compose a change in the fire wall’s configuration that will enable the program to operate freely. If you find that there is no way to let your previously operating program pass through the firewall then that might be a good indication that you need to analyze a different fire wall. Be sure to check with the makers of both the software program and the firewall before you change.

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