Requirements for Internet Hosts - Application and Support
RFC 1123
Document | Type |
RFC - Internet Standard
(October 1989; Errata)
Also known as STD 3
|
|
---|---|---|---|
Author | Robert Braden | ||
Last updated | 2020-01-21 | ||
Stream | Legacy | ||
Formats | plain text html pdf htmlized with errata bibtex | ||
Stream | Legacy state | (None) | |
Consensus Boilerplate | Unknown | ||
RFC Editor Note | (None) | ||
IESG | IESG state | RFC 1123 (Internet Standard) | |
Telechat date | |||
Responsible AD | (None) | ||
Send notices to | (None) |
Network Working Group Internet Engineering Task Force
Request for Comments: 1123 R. Braden, Editor
October 1989
Requirements for Internet Hosts -- Application and Support
Status of This Memo
This RFC is an official specification for the Internet community. It
incorporates by reference, amends, corrects, and supplements the
primary protocol standards documents relating to hosts. Distribution
of this document is unlimited.
Summary
This RFC is one of a pair that defines and discusses the requirements
for Internet host software. This RFC covers the application and
support protocols; its companion RFC-1122 covers the communication
protocol layers: link layer, IP layer, and transport layer.
Table of Contents
1. INTRODUCTION ............................................... 5
1.1 The Internet Architecture .............................. 6
1.2 General Considerations ................................. 6
1.2.1 Continuing Internet Evolution ..................... 6
1.2.2 Robustness Principle .............................. 7
1.2.3 Error Logging ..................................... 8
1.2.4 Configuration ..................................... 8
1.3 Reading this Document .................................. 10
1.3.1 Organization ...................................... 10
1.3.2 Requirements ...................................... 10
1.3.3 Terminology ....................................... 11
1.4 Acknowledgments ........................................ 12
2. GENERAL ISSUES ............................................. 13
2.1 Host Names and Numbers ................................. 13
2.2 Using Domain Name Service .............................. 13
2.3 Applications on Multihomed hosts ....................... 14
2.4 Type-of-Service ........................................ 14
2.5 GENERAL APPLICATION REQUIREMENTS SUMMARY ............... 15
Internet Engineering Task Force [Page 1]
RFC1123 INTRODUCTION October 1989
3. REMOTE LOGIN -- TELNET PROTOCOL ............................ 16
3.1 INTRODUCTION ........................................... 16
3.2 PROTOCOL WALK-THROUGH .................................. 16
3.2.1 Option Negotiation ................................ 16
3.2.2 Telnet Go-Ahead Function .......................... 16
3.2.3 Control Functions ................................. 17
3.2.4 Telnet "Synch" Signal ............................. 18
3.2.5 NVT Printer and Keyboard .......................... 19
3.2.6 Telnet Command Structure .......................... 20
3.2.7 Telnet Binary Option .............................. 20
3.2.8 Telnet Terminal-Type Option ....................... 20
3.3 SPECIFIC ISSUES ........................................ 21
3.3.1 Telnet End-of-Line Convention ..................... 21
3.3.2 Data Entry Terminals .............................. 23
3.3.3 Option Requirements ............................... 24
3.3.4 Option Initiation ................................. 24
3.3.5 Telnet Linemode Option ............................ 25
3.4 TELNET/USER INTERFACE .................................. 25
3.4.1 Character Set Transparency ........................ 25
3.4.2 Telnet Commands ................................... 26
3.4.3 TCP Connection Errors ............................. 26
3.4.4 Non-Default Telnet Contact Port ................... 26
3.4.5 Flushing Output ................................... 26
3.5. TELNET REQUIREMENTS SUMMARY ........................... 27
4. FILE TRANSFER .............................................. 29
4.1 FILE TRANSFER PROTOCOL -- FTP .......................... 29
4.1.1 INTRODUCTION ...................................... 29
4.1.2. PROTOCOL WALK-THROUGH ............................ 29
4.1.2.1 LOCAL Type ................................... 29
4.1.2.2 Telnet Format Control ........................ 30
4.1.2.3 Page Structure ............................... 30
4.1.2.4 Data Structure Transformations ............... 30
4.1.2.5 Data Connection Management ................... 31
4.1.2.6 PASV Command ................................. 31
4.1.2.7 LIST and NLST Commands ....................... 31
4.1.2.8 SITE Command ................................. 32
4.1.2.9 STOU Command ................................. 32
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