What is FireWall?

What is Firewall?

Firewalls are hardware and/or software designed to prevent unauthorized access to or from a private network. Firewalls examine all messages entering or leaving the Intranet and blocks those that do not meet the specified security criteria. They are placed at junction or gateway between the two networks, which is usually a private network and a public network such as the internet. Firewalls may be concerned with the type of traffic or with the source or destination addresses and ports. How Firewall Protect From Following Risk Access by untrusted entities Firewalls…

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