# @(#)$Header: /usr/build/tin/socketshr-1105/RCS/protocols,v 16.1 1990/01/15 18:14:51 jmc Exp $ # @(#)protocols 5.1 (Berkeley) 4/17/89 # # This file contains information regarding the known protocols # used in the DARPA Internet. # # The form for each entry is: # # # 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 ggp 3 GGP # gateway-gateway protocol tcp 6 TCP # transmission control protocol egp 8 EGP # exterior gateway protocol pup 12 PUP # PARC universal packet protocol udp 17 UDP # user datagram protocol hmp 20 HMP # host monitoring protocol xns-idp 22 XNS-IDP # Xerox NS IDP rdp 27 RDP # "reliable datagram" protocol