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What Is A Firewall?

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    A firewall is used for protecting a computer against threats. Firewalls are either hardware firewalls, which are placed in between a cable and a modem, or they can be software firewalls, which are included in anti-virus packages and operating systems.

    Usually, when firewalls are provided with anti-virus software or by operating systems, they will automatically be switched on. The user can choose to switch off the firewall if they wish, though this isn't a good idea as the computer will have less protection.

    Firewalls that are included with anti-virus software usually protect a computer more, due to the fact that the anti-virus has lots of other features which prevent threats.
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    Louise_gorman 

    answered 3 years ago

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