RFC433

Network Working Group Jon Postel (UCLA-NMC) Request for Comments: 433 Nancy Neigus (BBN) NIC 13491 22 December 1972 Categories: Socket Numbers References: 349

                   Socket Number List

The czar of socket numbers [Jon Postel] has established the following 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 all 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 - 239       Reserved for Future Use
   240 - 255       Any Experimental Function

Particular Assignments:

   Socket          Assignment

   1               Telnet
   3               File Transfer
   5               Remote Job Entry
   7               Echo
   9               Discard
   19              Character Generator [e.g. TTYTST]

   65              Speech Data Base @ ll-tx-2 (74)
   67              Datacomputer @ cca (31)

   241             NCP Measurement
   243             Survey Measurement
   245             LINK

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

           Telnet                  RFC 318
           File Transfer           RFC 354 & RFC 385
           Remote Job Entry        RFC 407
           Echo                    RFC 347
           Discard                 RFC 348
           Character Generator     RFC 429
           Speech Data Base        SUR 37
           Datacomputer            [Murray @ CCA]
           NCP Measurment          RFC 388
           Survey Data             [Kampe @ NMC]
           LINK                    [Bressler @ BBN]

It has come to our attention that there are several hosts performing useful public services on sockets which conflict with the above scheme. We hope we can resolve this problem 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 Neigus
                   Bolt Beranek and Newman
                   50 Moulton Street
                   Cambridge, Mass. 02139

                   Phone: (617) 661-0100

                   NIC Ident = NJN

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

1 UCLA-NMC

  1   Telnet
  241 NCP Measurement
  243 Survey Data

2 SRI-ARC

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

3 UCSB

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

4 UTAH

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

5 NCC 6 MIT-Multics

  1    Telnet

9 Harvard

  1    Telnet
  3    Sorry File Transfer

10 LL-67

  1    Telnet

11 SAIL

  1    Telnet
  3    File Transfer

12 ILL-ANTS 13 CASE

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

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 31 CCA-TENEX

  1    Telnet
  3    File Transfer
  5    Echo
  9    SYSTAT
  11   NETSTAT

35 UCSD

  1    Telnet

65 UCLA-CCN

  1    Telnet
  7    Echo
  9    Discard
  11   NETPJS [EBCDIC]
  13   NETRJS [ASCII]
  15   NETRJS [TTY]

66 SRI-AI

  1    Telnet
  3    DATE-TIME
  5    Echo
  7    CPYNET
  9    SYSTAT
  11   Sorry NETSTAT

69 BBN-TENEX (a)

  1    Telnet
  3    File Transfer
  5    Echo
  7    CPYNET
  9    SYSTAT
  13   DATE-TIME
  15   NETSTAT
  17   Oneliners
  3604505 = x'370019' = o'15600031'   TIP News

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
  5    Echo
  7    CPYNET
  9    SYSTAT
  13   DATE-TIME

133 BBN-TENEXB

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

134 MIT-AI

  1    Telnet
  3    File Transfer

198 MIT-Mathlab

  1    Telnet
  3    File Transfer

Following hosts not tested

7 RAND 8 SDC-ADEPT 19 NBS-ANTS 138 LL-TSP

 [ This RFC was put into machine readable form for entry ]
  [ into the online RFC archives by James Carlson 11/98 ]