Why Is a Firewall Important?

Answer

In computing, a firewall is important because it protects networks from unauthorized access. On the other hand, it allows legal communications to pass unabated. The main aim of inventing firewalls was to keep away spies and prevent virus attacks.
Q&A Related to "Why Is a Firewall Important"
firewalls are used to prevent unauthorized access to or from a Private network. someone can harm ones computer if the firewall is of. to save network or computer from hackers or crackers
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What damage they could do really depends on what kind of business you run (ie, what info you keep on your computers) and how insecure your systems are once I get behind that firewall
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Firewall is an extra layer of security built into computers which restricts access to systems from the outside world. Firewalls protect against hackers.
http://www.kgbanswers.co.uk/why-is-a-firewall-impo...
Personally having a good firewall and using NAT for you internal computers that already have anti-virus software installed should be all you need. If there was a anti-virus program
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1 Additional Answer
Malware and viruses are one of the greatest enemies of any computer or programmable machine. Hence, because of this is important for an individual to protect their PCs from being attacked my viruses and malware. A firewall is the primary computer protection program that shields the computer from being attacked by viruses of any computer programs from being destroyed by malware and viruses. Therefore, at all times individuals should turn on their computers firewalls and ensure they have installed an antivirus to shield their machines from being attacked by viruses.
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