RFC503

Network Working Group N. Neigus Request for Comments: 503 J. Postel NIC: 15747 13 April 1973 References: 349, 433

                       Socket Number List

This is a second pass at the specification of the socket numbers. More sockets have been made available for experimental functions, some new sockets have been assigned for network standard functions, host specific functions and experimental functions, and the list of available sockets for server hosts has been updated.

Following are the current assignments for socket numbers used for public functions. Note that a socket number is a 40 bit quantity, the first 8 bits being the host specification, the next 24 bits being site specific, and the last 8 bits being user specified -- these last 8 bits are called the AEN [it stands for, cleverly enough, Another Eightbit Number].

For the assignments here the value in the host field ranges across al hosts (unless otherwise specified), the value in the 24 bit field is zero, and the AEN is indicated here.

General Assignments:

Sockets Assignment

0 - 63 Network Wide Standard Functions 64 - 127 Host Specific Functions 128 - 223 Reserved for Future Use 224 - 255 Any Experimental Function

Particular Assignments:

Socket Assignment

 1                 Telnet
 3                 File Transfer
 5                 Remote Job Entry
 7                 Echo
 9                 Discard
11                 Systat or who-is-on function
13                 Date-Time function
15                 Netstat or who-is-up function
19                 Character Generator [e.g. TTYTST]

65                 Speech Data Base @ 11-tx-2 (74)
67
69                 CPYNET
71                 NETRJS [EBCDIC]
73                 NETRJS [ASCII]
75                 NETRJS [TTY]

241 NCP Measurement 243 Survey Measurement 245 LINK 247 RSEXEC 249 RSEXEC 251 RSEXEC

The specifications for the assigned functions can be found in the documents listed here:

Telnet NIC 7104 File Transfer NIC 7104 Remote Job Entry NIC 7104 Echo RFC 347 Discard RFC 348 Character Generator RFC 429 Speech Data Base SUR 37 Datacomputer [Murray @ CCA] NCP Measurement RFC 388 Survey Data [Kampa @ NMC] LINK [Bressler @ BBN] RSEXEC [Thomas @ BBN]

There are several hosts performing public services on sockets which conflict with the above scheme. We hope we can resolve these conflicts with a minimum of disruption.

The following is a tabulation of socket numbers together with the services offered. This listing is presented as an aid to network users. If you know of a socket function which has been left out or an entry which should be corrected or deleted please contact:

Jon Postel 3804 Boelter Hall Computer Science Department University of California Los Angeles, CA. 90024

Phone: (213) 825-2368

NIC Ident - JBP

     or

Nancy J. Neigus Bolt Beranek and Newman 50 Moulton Street Cambridge, Mass. 02138

Phone: (617) 661-0100

NIC Ident = NJN

We will be pleased to include socket/function information for other than "official" sockets [e.g. Tip News].

1 UCLA-NMC

   1      Telnet
   3      File Transfer
   241    NCP Measurement
   243    Survey Data

2 SRI-ARC

   1      Telnet
   3      File Transfer
   7      Echo
   11     SYSTAT
   13     DATE-TIME
   69     CPYNET

3 UCSB

   1      Telnet
   5      UCSB RJS [not ARPANET standard]
   7      Echo
   9      Discard

   1793, 1795, 1797, 1799, 1801, 2049 Graphics terminal sockets
   x'701', '703', '705', '707', '709', '801' o'3401', '3403',
   '3405', '3407', '3411', '4001'

   4   UTAH

       1      Telnet
       3      File Transfer
       5      Echo
       7      CPYNET
       9      SYSTAT
       13     DATE-TIME

   6   MIT-Multics

       1      Telnet
       3      File Transfer

   8   SDC-Adept

       1      Telnet

   9   Harvard

       1      Telnet
       3      File Transfer

   10  LL-67

       1      Telnet

   11  SAIL

       1      Telnet
       3      File Transfer

   13  CASE

       1      Telnet
       3      File Transfer
       7      Echo
       11     SYSTAT
       13     DATE-TIME
       69     CPYNET

   14  CMU

       1      Telnet
       3      File Transfer

   15  ILLIAC-TENEX

       1      Telnet
       3      File Transfer
       5      Echo
       7      CPYNET
       9      SYSTAT
       13     DATE-TIME

   16  NASA-AMES

       1      Telnet
       3      File Transfer
       5      Sorry Remote Job Entry
       7      Echo
       9      Discard
       241    NCP Measurement

   23  USC-44

       1      Telnet

   31  CCA-TENEX
       1      Telnet
       3      File Transfer
       7      Echo
       11     SYSTAT
       15     NETSTAT

   35  UCSD

       1      Telnet

   65  UCLA-CCN

       1      Telnet
       3      File Transfer
       7      Echo
       9      Discard
       71     NETRJS [EBCDIC]
       73     NETRJS [ASCII]
       75     NETRJS [TTY]

   66  SRI-AI

       1      Telnet
       3      File Transfer
       5      Echo
       7      CPYNET
       9      SYSTAT
       11     Sorry NETSAT

   69  BBN-TENEX (a)

       1      Telnet
       3      File Transfer
       7      Echo
       11     SYSTAT
       13     DATE-TIME
       15     NETSTAT
       17     Oneliners
       69     CPYNET
       247 = x'F7' = o'367' TIP RSEXEC Facility

   70  MIT-DMCG

       1      Telnet
       3      File Transfer
       7      Network Status
       9      Discard

   74  LL-TX-2

       1      Telnet

   78  CMU-alt

       1      Telnet
       3      File Transfer

   86  ISI-TENEX

       1      Telnet
       3      File Transfer
       7      Echo
       11     SYSTAT
       13     DATE-TIME
       69     CPYNET

   133 BBN-TENEXB

       1      Telnet
       3      File Transfer
       7      Echo
       11     SYSTAT
       13     DATE-TIME
       15     NETSTAT
       17     Oneliners
       69     CPYNET

   134 MIT-AI

       1      Telnet
       3      File Transfer

   198 MIT-Mathlab

       1      Telnet
       3      File Transfer

   User only hosts -- no server sockets

       5      NCC
       7      RAND
       12     ILI-ANTS
       19     NBS-ANTS
       32     PARC-MAXC (currently)
       138    LL-TSP
       197    BBN-1D