PROTOCOLS(5) Linux Programmer’s Manual PROTOCOLS(5)
NAME
protocols - the protocols definition file
DESCRIPTION
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. Pro-
tocol 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:
protocol
the native name for the protocol. For example ip, tcp, or udp.
number the official number for this protocol as it will appear within the ip
header.
aliases
optional aliases for the protocol.
This file might be distributed over a network using a networkwide naming service
like Yellow Pages/NIS or BIND/Hesiod.
FILES
/etc/protocols
The protocols definition file.
SEE ALSO
getprotoent(3)
Guide to Yellow Pages Service
Guide to BIND/Hesiod Service
http://www.iana.org/assignments/protocol-numbers
Linux 2002-09-22 PROTOCOLS(5)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache/1.3.41 (Unix) PHP/5.2.5 mod_perl/1.30 mod_gzip/1.3.26.1a
Under GNU General Public License
2009-01-10 11:24 @38.103.63.58 CrawledBy CCBot/1.0 (+http://www.commoncrawl.org/bot.html)