125a5ff5fSbostic# 225a5ff5fSbostic# Internet (IP) protocols 325a5ff5fSbostic# 4*46bc617eSbostic# @(#)protocols 8.1 (Berkeley) 06/09/93 525a5ff5fSbostic# 625a5ff5fSbosticip 0 IP # internet protocol, pseudo protocol number 725a5ff5fSbosticicmp 1 ICMP # internet control message protocol 87a676ac8Sandrewigmp 2 IGMP # internet group management protocol 925a5ff5fSbosticggp 3 GGP # gateway-gateway protocol 1025a5ff5fSbostictcp 6 TCP # transmission control protocol 1125a5ff5fSbosticegp 8 EGP # exterior gateway protocol 1225a5ff5fSbosticpup 12 PUP # PARC universal packet protocol 1325a5ff5fSbosticudp 17 UDP # user datagram protocol 1425a5ff5fSbostichmp 20 HMP # host monitoring protocol 1525a5ff5fSbosticxns-idp 22 XNS-IDP # Xerox NS IDP 167a676ac8Sandrewrdp 27 RDP # reliable data protocol 177a676ac8Sandrewiso-tp4 29 ISO-TP4 # ISO Transport Protocol Class 4 187a676ac8Sandrewiso-ip 80 ISO-IP # ISO Internet Protocol 192afecebcSandrewencap 98 ENCAP # RFC1241 encapsulation 20