| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556 | # Internet (IP) protocols## Updated from http://www.iana.org/assignments/protocol-numbers and other# sources.# New protocols will be added on request if they have been officially# assigned by IANA and are not historical.# If you need a huge list of used numbers please install the nmap package.ip	0	IP		# internet protocol, pseudo protocol number#hopopt	0	HOPOPT		# IPv6 Hop-by-Hop Option [RFC1883]icmp	1	ICMP		# internet control message protocoligmp	2	IGMP		# Internet Group Managementggp	3	GGP		# gateway-gateway protocolipencap	4	IP-ENCAP	# IP encapsulated in IP (officially ``IP'')st	5	ST		# ST datagram modetcp	6	TCP		# transmission control protocolegp	8	EGP		# exterior gateway protocoligp	9	IGP		# any private interior gateway (Cisco)pup	12	PUP		# PARC universal packet protocoludp	17	UDP		# user datagram protocolhmp	20	HMP		# host monitoring protocolxns-idp	22	XNS-IDP		# Xerox NS IDPrdp	27	RDP		# "reliable datagram" protocoliso-tp4	29	ISO-TP4		# ISO Transport Protocol class 4 [RFC905]xtp	36	XTP		# Xpress Transfer Protocolddp	37	DDP		# Datagram Delivery Protocolidpr-cmtp 38	IDPR-CMTP	# IDPR Control Message Transportipv6	41	IPv6		# Internet Protocol, version 6ipv6-route 43	IPv6-Route	# Routing Header for IPv6ipv6-frag 44	IPv6-Frag	# Fragment Header for IPv6idrp	45	IDRP		# Inter-Domain Routing Protocolrsvp	46	RSVP		# Reservation Protocolgre	47	GRE		# General Routing Encapsulationesp	50	IPSEC-ESP	# Encap Security Payload [RFC2046]ah	51	IPSEC-AH	# Authentication Header [RFC2402]skip	57	SKIP		# SKIPipv6-icmp 58	IPv6-ICMP	# ICMP for IPv6ipv6-nonxt 59	IPv6-NoNxt	# No Next Header for IPv6ipv6-opts 60	IPv6-Opts	# Destination Options for IPv6rspf	73	RSPF CPHB	# Radio Shortest Path First (officially CPHB)vmtp	81	VMTP		# Versatile Message Transporteigrp	88	EIGRP		# Enhanced Interior Routing Protocol (Cisco)ospf	89	OSPFIGP		# Open Shortest Path First IGPax.25	93	AX.25		# AX.25 framesipip	94	IPIP		# IP-within-IP Encapsulation Protocoletherip	97	ETHERIP		# Ethernet-within-IP Encapsulation [RFC3378]encap	98	ENCAP		# Yet Another IP encapsulation [RFC1241]#	99			# any private encryption schemepim	103	PIM		# Protocol Independent Multicastipcomp	108	IPCOMP		# IP Payload Compression Protocolvrrp	112	VRRP		# Virtual Router Redundancy Protocoll2tp	115	L2TP		# Layer Two Tunneling Protocol [RFC2661]isis	124	ISIS		# IS-IS over IPv4sctp	132	SCTP		# Stream Control Transmission Protocolfc	133	FC		# Fibre Channel
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