Firewall basics

Firewall basics

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Subject Author Date
Firewall basics securitylearner 01-10-2008
Posted by on January 10, 2008, 8:43 pm
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I would like to know how a software firewall application receives and
can check all the packet intended for any port?

I mean Is there any special port on which all incoming data is
forwarded first? or Firewalls use something like port 0 to receive all
data? In anyway please explain in detail which port is used?

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