Network Working Group
Request for Comments : 349
NIC : 10428
Jon Postel
Computer Science
30 May 72

Categories : Socket Numbers

References : RFC's 322, 204

Proposed Standard Socket Numbers

I propose that there be a czar (me ?) who hands out official socket numbers for use by standard protocols. This czar should also keep track of and publish a list of those socket numbers where host specific services can be obtained. I further suggest that the initial allocation be as follows:

        Sockets         Assignment
        0-63            Network wide standard functions
        64-127          Host specific functions
        128-239         Reserved for future use
        240-255         Any experimental function

and within the network wide standard functions the following particular assignment be made:

        Socket          Assignment
           1            Telnet
           3            File Transfer
           5            Remote Job Entry
           7            Echo
           9            Discard

these socket numbers (decimal) are to be used for the socket called "L" in the official Initial Connection protocol (ICP) as specified in NIC 7104 the "Current Network Protocols" notebook.

       [ This RFC was put into machine readable form for entry ]
       [ into the online RFC archives by BBN Corp. under the   ]
       [ direction of Alex McKenzie.                   12/96   ]