Question { Volvo, 5813 }

what is firewall
how fiarewall work
how many interfaeces in the cisco pix 501 firewall
what is the working of that dmz interface

Answer

The PIX Firewall protects an inside network from
unauthorized access by users on an outside network, such as
the public Internet. Most PIX Firewall models can
optionally protect one or more perimeter networks, also
known as demilitarized zones (DMZs). Access to the
perimeter network is typically less restricted than access
to the inside network, but more restricted than access to
the outside network. Connections between the inside,
outside, and perimeter networks are controlled by the PIX
Firewall.

All PIX Firewalls provide at least two interfaces, which by
default, are called outside and inside, and are assigned a
security level of 0 and 100, respectively.

Question { 11698 }

Which port are used by Viruses? TCP or UDP?

Answer

UDP

Question { 11698 }

Which port are used by Viruses? TCP or UDP?

Answer

Hi all, for this answer, this is the only possible
explaination i can give... :)

UDP Port 137 is connectionless and does not guarantee
reliable communication; it’s up to the application that
received the message on Port 137 to process any errors and
verify correct delivery.

Because protocol UDP port 137 was flagged as a virus
(colored red) does not mean that a virus is using port 137,
but that a Trojan or Virus has used this port in the past
to communicate.

This above answer we can consider as one of the example.
Still we have lot many things to explain in this ragards..