What is firewall in computer? tccicomputercoaching.com
A firewall is a system designed to prevent unauthorized access to or from a private network. You can implement a firewall in either hardware or software form,or a combination of both.
Firewalls are incorporated into a wide variety of networked devices to filter traffic and lower the risk that malicious packets travelling over the public internet can impact the security of a private network. Firewalls may also be purchased as stand-alone software applications.
Software firewalls are designed to protect a computer by blocking certain programs from sending and receiving information from a local network or the Internet.
Hardware firewalls are found on most network routers and can be configured through the router setup screen.
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