PROTOCOLS(5) Linux Programmer's Manual PROTOCOLS(5)NAME
protocols - 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. Protocol numbers and names are specified by the IANA (Inter-
net 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 network-wide naming service like Yellow Pages/NIS or BIND/Hesiod.
FILES
/etc/protocols
The protocols definition file.
SEE ALSO getprotoent(3)
<http://www.iana.org/assignments/protocol-numbers>
COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
Linux 2012-08-05 PROTOCOLS(5)
Check Out this Related Man Page
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. Protocol numbers and names are specified by the IANA (Inter-
net 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 network-wide naming service like Yellow Pages/NIS or BIND/Hesiod.
FILES
/etc/protocols
The protocols definition file.
SEE ALSO getprotoent(3)
http://www.iana.org/assignments/protocol-numbers
COLOPHON
This page is part of release 3.25 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/.
Linux 2008-09-23 PROTOCOLS(5)
I'm planning on putting together a chart of basic information (port number, protocol number, transport layer protocol, etc) on different protocols (FTP, ICMP, DNS, IP, etc)
I found:
http://www.phys-iasi.ro/Library/RFCs/rfc1700.htm
and that tells me a little bit of information but I'm looking... (3 Replies)
Hello everyone !
Ive searched everywhere and still havnt found enough information to help me overcome (what seems like) a small problem
I have created a temporary file in which i store numbers which a seperated by a space, eg)
5 10 46
23 866 392
i wish to take the numbers for each line... (2 Replies)
i have a file having two feilds. the numbers in the first field may or may not having repition in the file . i want to make a file out of this file containg only the last repeted number and the non repeted number.
example is
111 2
222 5
333 7
111 1
777 9
222 8
999 1
333 3
... (2 Replies)