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 / s.m.feroz ahmed

Hi,

Firewall is defined as a device which allows Interesting
Traffic inside Network.Firewall is placed in between
outside and inside Network.And it allows interesting
traffic to allow inside network.

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