Related information for Telnet
IBM® Redbooks® publications and Web sites contain information that relates to the Telnet topic collection. You can view or print any of the PDF files.
Web sites
Internet Assigned Numbers Authority (IANA) (www.iana.org)
Find information about common port number assignments.
The Internet Engineering Task Force (IETF) (www.ietf.org)
Read Request for Comments (RFC), such as RFC 4777 5250 Telnet Enhancements .