How do I bypass a firewall?

How do I bypass a firewall?
That depends on the firewall. What are you trying to do? What is the firewall? What is its rule set? Are you inside or outside of the firewall? Are you trying to bypass (go around) or penetrate (go through)? If the former, then you need to know the network architecture. You see, you have asked a very big question. If it were that simple, if there was one universal answer, then there would be no firewalls.
This was first published in November 2003

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