A Firewall Software, in the simplest terms can be described as a network security system, (software-based in this case), that is able to control all the incoming and outgoing network traffic based on a set of well defined rules by experts.

This Firewall Software helps to prevent hackers or malicious software (such as worms and Trojans) from gaining access to your computer via a network or the Internet. It can also help in stopping your computer from sending malicious software to other computers.

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The main role played by a Firewall Software is to distinctively separate a secure area from a less secure area and to control communications between the two areas. Firewall Software can also assume a variety of other …

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