RFC 681 · UNKNOWN · 1975
MON · 15 JUN 2026
Network UNIX
Overview
RFC 681, “Network UNIX”, is an Unknown document published in March 1975 by S. Holmgren. The canonical text is published by the RFC Editor.
Abstract
Capabilities as an ARPANET Mini-Host: standard I/O, Telnet, NCP, Hardware/Software requirements, reliability, availability.
What “Unknown” means
The standards-track status of this early RFC was never formally classified.
Read this RFC
The canonical text of RFC 681 is hosted at rfc-editor.org. Available in TXT,HTML.
Other RFCs from 1975
- RFC 680 Message Transmission Protocol
- RFC 679 February, 1975, survey of New-Protocol Telnet servers
- RFC 683 FTPSRV - Tenex extension for paged files
- RFC 684 Commentary on procedure calling as a network protocol
- RFC 677 Maintenance of duplicate databases
- RFC 685 Response time in cross network debugging
- RFC 686 Leaving well enough alone
- RFC 687 IMP/Host and Host/IMP Protocol changes