What is Firewall? I saw in one website Firewall is software
and hardware and combination of software and hardware.It is
used to protect user information or avoiding crackers.how
it is?Whether it is hardware?If not then why the images are
like that?(a wall ).Please help me by answering this
question.Advance thanks.

Answer Posted / sanjai

Firewalls as first line of defense

The main function of a firewall is to act as the first line
of defense into your network, protecting it from external
attacks. You can also use a firewall to open up ports for
specific incoming and/or outgoing traffic. Firewalls also
have logging facilities that will inform you about any
failed attacks on your network.

Please check the link below of my website where u can find
more about firewalls and other it solutions available.

http://freeitservicedesk.com/UTM_FIREWALL.php

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