124 lines
2.6 KiB
HTML
124 lines
2.6 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of PROTOCOLS</TITLE>
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</HEAD><BODY>
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<H1>PROTOCOLS</H1>
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Section: Linux Programmer's Manual (5)<BR>Updated: 2012-08-05<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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protocols - protocols definition file
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<A NAME="lbAC"> </A>
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<H2>DESCRIPTION</H2>
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This file is a plain ASCII file, describing the various DARPA internet
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protocols that are available from the TCP/IP subsystem.
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It should be
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consulted instead of using the numbers in the ARPA include files, or,
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even worse, just guessing them.
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These numbers will occur in the
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protocol field of any IP header.
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<P>
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Keep this file untouched since changes would result in incorrect IP
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packages.
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Protocol numbers and names are specified by the IANA
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(Internet Assigned Numbers Authority).
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<P>
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Each line is of the following format:
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<P>
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<DL COMPACT><DT id="1"><DD>
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<I>protocol number aliases ...</I>
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</DL>
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<P>
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where the fields are delimited by spaces or tabs.
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Empty lines are ignored.
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If a line contains a hash mark (#), the hash mark and the part
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of the line following it are ignored.
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<P>
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The field descriptions are:
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<DL COMPACT>
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<DT id="2"><I>protocol</I>
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<DD>
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the native name for the protocol.
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For example
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<I>ip</I>,
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<I>tcp</I>,
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or
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<I>udp</I>.
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<DT id="3"><I>number</I>
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<DD>
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the official number for this protocol as it will appear within the IP
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header.
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<DT id="4"><I>aliases</I>
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<DD>
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optional aliases for the protocol.
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</DL>
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<P>
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This file might be distributed over a network using a network-wide
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naming service like Yellow Pages/NIS or BIND/Hesiod.
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<A NAME="lbAD"> </A>
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<H2>FILES</H2>
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<DL COMPACT>
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<DT id="5"><I>/etc/protocols</I>
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<DD>
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The protocols definition file.
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</DL>
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<A NAME="lbAE"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?3+getprotoent">getprotoent</A></B>(3)
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<P>
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<A NAME="lbAF"> </A>
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<H2>COLOPHON</H2>
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This page is part of release 5.05 of the Linux
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<I>man-pages</I>
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project.
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A description of the project,
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information about reporting bugs,
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and the latest version of this page,
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can be found at
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<A HREF="https://www.kernel.org/doc/man-pages/.">https://www.kernel.org/doc/man-pages/.</A>
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="6"><A HREF="#lbAB">NAME</A><DD>
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<DT id="7"><A HREF="#lbAC">DESCRIPTION</A><DD>
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<DT id="8"><A HREF="#lbAD">FILES</A><DD>
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<DT id="9"><A HREF="#lbAE">SEE ALSO</A><DD>
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<DT id="10"><A HREF="#lbAF">COLOPHON</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:06:04 GMT, March 31, 2021
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</BODY>
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</HTML>
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