# @(#)$Id: protocols,v 1.1 91/02/14 12:31:22 nick Exp $
#
# This file contains information regarding the known protocols
# used in the DARPA Internet.
#
# The form for each entry is:
# <official protocol name>	<protocol number>	<aliases>
#
# See the protocols(4) manual page for more information
# Note: The entries cannot be preceded by a blank space.
#
#
# Internet (IP) protocols
#
ip	0	IP	# internet protocol, pseudo protocol number
icmp	1	ICMP	# internet control message protocol
igmp	2	IGMP	# internet group multicast protocol
ggp	3	GGP	# gateway-gateway protocol
tcp	6	TCP	# transmission control protocol 
pup	12	PUP	# PARC universal packet protocol
udp	17	UDP	# user datagram protocol
