For those that don't know about it this is a great site with a hell of a lot of info on most, if not all of the protocols out there. Links to RFC's, whitepapers, a good link section, just an overall good site if looking for info on a particular protocol or just want to browse around (the index is alphebatized).
http://www.protocols.com/
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"There is no end. There is no beginning. There is only the infinite passion of life."
--Fellini