List of IPv4 protocol numbers

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This is a list of IP protocol numbers that defines the number used in the protocol field of IPv4 packets and the Next Header field of IPv6 packets.

Decimal Keyword Protocol References
0 HOPOPT IPv6 Hop-by-Hop Option RFC 1883
1 ICMP Internet Control Message Protocol RFC 792
2 IGMP Internet Group Management Protocol RFC 1112
3 GGP Gateway-to-Gateway Protocol RFC 823
4 IP IP in IP (encapsulation) RFC 2003
5 ST Internet Stream Protocol RFC 1190, RFC 1819
6 TCP Transmission Control Protocol RFC 793
7 CBT CBT
8 EGP Exterior Gateway Protocol RFC 888
9 IGP Interior Gateway Protocol (any private interior gateway (used by Cisco for their IGRP))
10 BBN-RCC-MON BBN RCC Monitoring
11 NVP-II Network Voice Protocol RFC 741
12 PUP Xerox PUP
13 ARGUS ARGUS
14 EMCON EMCON
15 XNET Cross Net Debugger IEN 158
16 CHAOS Chaos
17 UDP User Datagram Protocol RFC 768
18 MUX Multiplexing IEN 90
19 DCN-MEAS DCN Measurement Subsystems
20 HMP Host Monitoring Protocol RFC 869
21 PRM Packet Radio Measurement
22 XNS-IDP XEROX NS IDP
23 TRUNK-1 Trunk-1
24 TRUNK-2 Trunk-2
25 LEAF-1 Leaf-1
26 LEAF-2 Leaf-2
27 RDP Reliable Datagram Protocol RFC 908
28 IRTP Internet Reliable Transaction Protocol RFC 938
29 ISO-TP4 ISO Transport Protocol Class 4 RFC 905
30 NETBLT Bulk Data Transfer Protocol RFC 969
31 MFE-NSP MFE Network Services Protocol
32 MERIT-INP MERIT Internodal Protocol
33 DCCP Datagram Congestion Control Protocol RFC 4340
34 3PC Third Party Connect Protocol
35 IDPR Inter-Domain Policy Routing Protocol RFC 1479
36 XTP XTP
37 DDP Datagram Delivery Protocol
38 IDPR-CMTP IDPR Control Message Transport Protocol
39 TP++ TP++ Transport Protocol
40 IL IL Transport Protocol
41 IPv6 IPv6
42 SDRP Source Demand Routing Protocol
43 IPv6-Route Routing Header for IPv6
44 IPv6-Frag Fragment Header for IPv6
45 IDRP Inter-Domain Routing Protocol
46 RSVP Resource Reservation Protocol
47 GRE Generic Routing Encapsulation
48 MHRP Mobile Host Routing Protocol
49 BNA BNA
50 ESP Encapsulating Security Payload RFC 2406
51 AH Authentication Header RFC 2402
52 I-NLSP Integrated Net Layer Security Protocol TUBA
53 SWIPE IP with Encryption
54 NARP NBMA Address Resolution Protocol RFC 1735
55 MOBILE IP Mobility (Min Encap) RFC 2004
56 TLSP Transport Layer Security Protocol (using Kryptonet key management)
57 SKIP SKIP
58 IPv6-ICMP ICMP for IPv6 RFC 1883
59 IPv6-NoNxt No Next Header for IPv6 RFC 1883
60 IPv6-Opts Destination Options for IPv6 RFC 1883
61 Any host internal protocol
62 CFTP CFTP
63 Any local network
64 SAT-EXPAK SATNET and Backroom EXPAK
65 KRYPTOLAN Kryptolan
66 RVD MIT Remote Virtual Disk Protocol
67 IPPC Internet Pluribus Packet Core
68 Any distributed file system
69 SAT-MON SATNET Monitoring
70 VISA VISA Protocol
71 IPCV Internet Packet Core Utility
72 CPNX Computer Protocol Network Executive
73 CPHB Computer Protocol Heart Beat
74 WSN Wang Span Network
75 PVP Packet Video Protocol
76 BR-SAT-MON Backroom SATNET Monitoring
77 SUN-ND SUN ND PROTOCOL-Temporary
78 WB-MON WIDEBAND Monitoring
79 WB-EXPAK WIDEBAND EXPAK
80 ISO-IP International Organisation for Standardization Internet Protocol
81 VMTP Versatile Message Transaction Protocol RFC 1045
82 SECURE-VMTP Secure Versatile Message Transaction Protocol RFC 1045
83 VINES VINES
84 TTP TTP
85 NSFNET-IGP NSFNET-IGP
86 DGP Dissimilar Gateway Protocol
87 TCF TCF
88 EIGRP EIGRP
89 OSPF Open Shortest Path First RFC 1583
90 Sprite-RPC Sprite RPC Protocol
91 LARP Locus Address Resolution Protocol
92 MTP Multicast Transport Protocol
93 AX.25 AX.25
94 IPIP IP-within-IP Encapsulation Protocol
95 MICP Mobile Internetworking Control Protocol
96 SCC-SP Semaphore Communications Sec. Pro
97 ETHERIP Ethernet-within-IP Encapsulation RFC 3378
98 ENCAP Encapsulation Header RFC 1241
99 Any private encryption scheme
100 GMTP GMTP
101 IFMP Ipsilon Flow Management Protocol
102 PNNI PNNI over IP
103 PIM Protocol Independent Multicast
104 ARIS ARIS
105 SCPS SCPS
106 QNX QNX
107 A/N Active Networks
108 IPComp IP Payload Compression Protocol RFC 3173
109 SNP Sitara Networks Protocol
110 Compaq-Peer Compaq Peer Protocol
111 IPX-in-IP IPX in IP
112 VRRP Virtual Router Redundancy Protocol, Common Address Redundancy Protocol (not IANA assigned) VRRP:RFC 3768
113 PGM PGM Reliable Transport Protocol
114 Any 0-hop protocol
115 L2TP Layer Two Tunneling Protocol
116 DDX D-II Data Exchange (DDX)
117 IATP Interactive Agent Transfer Protocol
118 STP Schedule Transfer Protocol
119 SRP SpectraLink Radio Protocol
120 UTI UTI
121 SMP Simple Message Protocol
122 SM SM
123 PTP Performance Transparency Protocol
124 IS-IS over IPv4
125 FIRE
126 CRTP Combat Radio Transport Protocol
127 CRUDP Combat Radio User Datagram
128 SSCOPMCE
129 IPLT
130 SPS Secure Packet Shield
131 PIPE Private IP Encapsulation within IP
132 SCTP Stream Control Transmission Protocol
133 FC Fibre Channel
134 RSVP-E2E-IGNORE RFC 3175
135 Mobility Header RFC 3775
136 UDP Lite RFC 3828
137 MPLS-in-IP RFC 4023
138 manet MANET Protocols RFC-ietf-manet-iana-07.txt
139 HIP Host Identity Protocol RFC-ietf-hip-base-10.txt
140-252 UNASSIGNED
253-254 Use for experimentation and testing RFC 3692
255 Reserved

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