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Re: TCP vs UDP
From: "Chris Berry" <compjma () hotmail com>
Date: Mon, 11 Nov 2002 12:48:55 -0800

From: "Roberto Ramsis" <robertoramsis () hotmail com>
what's the difference between a port TCP and UDP?
i am talking from a firewall concept,i want to know ,if i need to block a port,when should i block TCP and when UDP and when both?

TCP is a connection oriented protocol, UDP is a connectionless protocol. When to block what will depend on the service/program you're trying to allow access. You'll have to look up the specifics for each one. If you're confused on this issue, I recommend that you do some reading before you go too much farther, something like "Building Internet Firewalls 2nd Edition" by O'Reilly would probably be a good start.

Chris Berry
compjma () hotmail com
Systems Administrator
JM Associates

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