RFC Editor:
Collates Request For Comments documents. Explains the RFC process,
and includes a searchable database of RFCs.
http://www.rfc-editor.org/
IETF Internet Drafts:
List of documents organized by alphabetized subjects.
http://www.ietf.org/1id-abstracts.html
Active IETF Working Groups:
A directory of the Internet Engineering Task Force groups and their
web pages.
http://www.ietf.org/html.charters/wg-dir.html
Internet protocols:
General comments on protocol design, and good reference material on
a few protocols (especially mail-related; also ftp, time, and misc)
by Dan Bernstein.
ftp://koobera.math.uic.edu/www/proto.html
Port Numbers and Services Database:
Well known port numbers for TCP and UDP, from Internet Assigned
Numbers Authority (IANA).
http://www.sockets.com/services.htm
RFC Sourcebook:
Description of protocols, file formats, glossary of terms, RFCs.
http://www.networksorcery.com/enp/
Protocols.com:
Features an overview of various networking and mobile communications
protocols, white papers, and links of interest.
http://www.protocols.com/
XNS.org:
Independent organization managing the eXtensible Name Service, an
open protocol and open-source platform for universal addressing,
automated data exchange, and privacy control. Includes an overview,
charter, history, and specifications.
http://www.xns.org/
Internet Encyclopedia:
Overview of Internet protocols.
http://www.freesoft.org/CIE/Topics/73.htm
The Kermit Project:
A protocol that transfers text and binary files without errors
between diverse types of computers over potentially hostile
communication links, and a suite of communications software
programs; Columbia University.
http://www.kermit-project.org/
Languages of the Internet:
Description of Internet protocols with diagrams of data structures.
http://www.ee.siue.edu/~rwalden/networking/networking.html
Free Protocols Foundation:
Independent public forum supporting patent-free protocols. Includes
policies, papers, a mission statement, and a list of free protocols.
http://www.freeprotocols.org/
