What is a Firewall?

A firewall protects your computer against incoming and outgoing information that contains malicious attacks, viruses, worms, spyware. It prevents unauthorized use and access to your network. A firewall analyzes data entering and exiting the network based on your customization. It ignores information that comes from unknown unsecured, or suspicious locations. A firewall can be software or hardware, and having both forms of firewall protection can add a double layer of security to your computer.

A firewall can prevent hackers from gaining access to personal information on your computer. It helps screen out many kinds of malicious internet traffic before it reaches your computer. Hackers can install code on your computer that deletes or ruins files, or causes malfunctions. They can also use your computer to attack other computers without your knowledge. A firewall can prevent this malicious behavior. It doesn't matter how you connect to the internet, (DSL, ADSL, cable modem, dial-up modem), you still need a firewall for protection.

Firewall software is best suited for home users and is the most popular choice. It's easy to install and customize. Firewall hardware, on the other hand, is a physical, stand-alone object. Most businesses use firewall hardware for their network. But recently, most broadband routers use firewall hardware. Your router company will assist you in configuring the security features of your router and setting up a secure password.

There are many differences between a software and hardware firewall, and the best protection for your computer and network is to use both. Each one offers different but vital security features and benefits. You should always update your firewall and your operating system to maintain the highest level of protection. Be sure to check your firewall to ensure it is connected and working properly.