A firewall is important and fundamental to personal computer security. Without a firewall install in your computer, make your computer is operating with an open door policy. Which mean anyone can take any sensitive information like bank account information, your password, credit card number, if you save that in your computer files.
Firewall is a part of a computer system or network that is designed to block unauthorized access while permitting authorized communications. Firewall can be implemented in either hardware or software or combination of both. All messages entering or leaving pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria.
Without proper configuration, a firewall can often become worthless.
So, don't take a risk if you dont understand about firewall configuration.
Use trusted complete antivirus software with inbound firewall and outbound firewall, like zonealarm internet security suite or norton internet security.
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