TCP/UDP Port Numbers Reference

TCP/UDP Port Number Reference Guide picks

IP networking uses the concept of protocol "ports" at the transport layer to manage communication channels between programs. Many TCP/IP port numbers are associated with specific applications as explained below.
FAQ #12 - What Is a Port Number? What is a port number? Part of the Computer Networking FAQ list. TCP Port and UDP Port Number Glossary Reference for TCP and UDP port numbers used by TCP/IP. TCP and UDP Port Assignments From the Windows 2000 Resource Kit, Microsoft documents port assignments for protocols and commonly-used services in easy-to-read and downloadable formats. TCP/IP Port Numbers List of assigned or "well-known" port numbers for both TCP and UDP. Port Numbers and Services Database Listings for the identity of both well-known and registered TCP/UDP port numbers. IP Port Numbers Another listing of well-known and reserved ports with mention of the dynamic port number range. TDP/UDP Port Numbers Yet another port number listing, this one with additional hyperlinks to navigate to a specific numeric range.

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