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Command: protocols | Section: 5 | Source: FreeBSD | File: protocols.5.gz
PROTOCOLS(5) FreeBSD File Formats Manual PROTOCOLS(5)
NAME
protocols - protocol name data base
DESCRIPTION
The protocols file contains information regarding the assigned protocol
numbers used by IPv4 and IPv6 to identify the next level protocol. For
each protocol a single line should be present with the following
information:
official protocol name
protocol number
aliases
Items are separated by any number of blanks and/or tab characters. A
``#'' indicates the beginning of a comment; characters up to the end of
the line are not interpreted by routines which search the file.
Protocol names may contain any printable character other than a field
delimiter, newline, or comment character.
FILES
/etc/protocols The protocols file resides in /etc.
SEE ALSO
getprotoent(3)
IANA Allocation Guidelines For Values In the Internet Protocol and
Related Headers, RFC 2780, March 2000.
IANA Allocation Guidelines for the Protocol Field, RFC 5237, February
2008.
HISTORY
The protocols file format appeared in 4.2BSD, describing the "known
protocols used in the DARPA Internet".
BUGS
A name server should be used instead of a static file.
FreeBSD 14.1-RELEASE-p8 December 7, 2020 FreeBSD 14.1-RELEASE-p8