protocols — the protocols definition file
This file is a plain ASCII file, describing the various DARPA internet protocols that are available from the TCP/IP subsystem. It should be consulted instead of using the numbers in the ARPA include files, or, even worse, just guessing them. These numbers will occur in the protocol field of any ip header.
Keep this file untouched since changes would result in incorrect ip packages. Protocol numbers and names are specified by the IANA (Internet Assigned Numbers Authority).
Each line is of the following format:
protocol number aliases ...
where the fields are delimited by spaces or tabs. Empty lines are ignored. If a line contains a hash mark (#), the hash mark and the part of the line following it are ignored.
The field descriptions are:
protocolthe native name for the protocol. For example ip, tcp, or udp.
numberthe official number for this protocol as it will appear within the ip header.
aliasesoptional aliases for the protocol.
This file might be distributed over a network using a networkwide naming service like Yellow Pages/NIS or BIND/Hesiod.
Guide to Yellow Pages Service
Guide to BIND/Hesiod Service
http://www.iana.org/assignments/protocol-numbers
This page is part of release 2.79 of the Linux man-pages project. A
description of the project, and information about reporting
bugs, can be found at
http://www.kernel.org/doc/man-pages/.
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Copyright (c) 1995 Martin Schulze <joeyinfodrom.north.de> This is free documentation; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU General Public License's references to "object code" and "executables" are to be interpreted as the output of any document formatting or typesetting system, including intermediate and printed output. This manual is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this manual; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. 1995-10-18 Martin Schulze <joeyinfodrom.north.de> * first released 2002-09-22 Seth W. Klein <sksethwklein.net> * protocol numbers are now assigned by the IANA |