RFC 506 · UNKNOWN · 1973
SUN · 14 JUN 2026
FTP command naming problem
Overview
RFC 506, “FTP command naming problem”, is an Unknown document published in June 1973 by M.A. Padlipsky. The canonical text is published by the RFC Editor.
What “Unknown” means
The standards-track status of this early RFC was never formally classified.
Read this RFC
The canonical text of RFC 506 is hosted at rfc-editor.org. Available in TXT,HTML.
Other RFCs from 1973
- RFC 505 Two solutions to a file transfer access problem
- RFC 504 Distributed resources workshop announcement
- RFC 508 Real-time data transmission on the ARPANET
- RFC 503 Socket number list
- RFC 509 Traffic statistics
- RFC 510 Request for network mailbox addresses
- RFC 501 Un-muddling "free file transfer"
- RFC 511 Enterprise phone service to NIC from ARPANET sites