Internet Security

Firewalls

A firewall is a part of a computer system or network that is designed to block unauthorized access while permitting authorized communications, it is a device or set of devices which are configured to permit or deny computer applications based upon a set of rules and other criteria. Firewalls can be implemented in either hardware or software or a combination of both, firewalls are frequently used to prevent unauthorized Internet users from accessing private networks connected to the Internet. A firewall is normally placed between a protected network and an unprotected network and acts like a gate to protect assets to ensure that nothing private goes out and nothing malicious comes in.

Windows Firewall is not enough to protect your computer from intrusion but there are a number of programs available to use that offer far better protection, and some of them are free to use like Zone Alarm, PC Tools Firewall Plus or Comodo Firewall.

 

Antivirus

Antivirus software is used to prevent, detect and remove computer viruses, worms and trojan horses. Such programs may also prevent and remove adware, spyware and other forms of malware. Antivirus software is a class of program that searches your hard drive and floppy disks for any known or potential threats, the market for this kind of program has expanded because of Internet growth and the increasing use of the Internet by businesses and individuals concerned about protecting their computer assets. Getting software to protect your computer is unfortunately a must these days, there are many types of antivirus software avalible from large companies like Symantec Norton to free antivirus software from AVG and Avira AntiVir.