15 Dec
2024
15 Dec
'24
2:41 a.m.
It's TCP port 87 in RFC 1060 "Assigned
Numbers", but seems to have
been dropped since.
Checking closer, I see it was first defined as "any terminal link"
in RFC 770 from 1980. It was updated to "any private terminal link"
in 1984. TTYLINK is actually a "Unix port" in RFC 1060. RFC 1340
dropped TTYLINK but retains "any private terminal link", and it's still
there in RFC 1700 from 1994, and in the IANA database today.
https://www.iana.org/assignments/service-names-port-numbers/service-names-p…