1 icmp 1 ICMP # Internet Control Message
2 igmp 2 IGMP # Internet Group Management
3 ggp 3 GGP # Gateway-to-Gateway
4 ip 4 IP # IP in IP (encasulation)
6 tcp 6 TCP # Transmission Control
8 egp 8 EGP # Exterior Gateway Protocol
9 igp 9 IGP # any private interior gateway
10 bbn-rcc-mon 10 BBN-RCC-MON # BBN RCC Monitoring
11 nvp-ii 11 NVP-II # Network Voice Protocol
13 argus 13 ARGUS # ARGUS
14 emcon 14 EMCON # EMCON
15 xnet 15 XNET # Cross Net Debugger
16 chaos 16 CHAOS # Chaos
17 udp 17 UDP # User Datagram
18 mux 18 MUX # Multiplexing
19 dcn-meas 19 DCN-MEAS # DCN Measurement Subsystems
20 hmp 20 HMP # Host Monitoring
21 prm 21 PRM # Packet Radio Measurement
22 xns-idp 22 XNS-IDP # XEROX NS IDP
23 trunk-1 23 TRUNK-1 # Trunk-1
24 trunk-2 24 TRUNK-2 # Trunk-2
25 leaf-1 25 LEAF-1 # Leaf-1
26 leaf-2 26 LEAF-2 # Leaf-2
27 rdp 27 RDP # Reliable Data Protocol
28 irtp 28 IRTP # Internet Reliable Transaction
29 iso-tp4 29 ISO-TP4 # ISO Transport Protocol Class 4
30 netblt 30 NETBLT # Bulk Data Transfer Protocol
31 mfe-nsp 31 MFE-NSP # MFE Network Services Protocol
32 merit-inp 32 MERIT-INP # MERIT Internodal Protocol
33 sep 33 SEP # Sequential Exchange Protocol
34 3pc 34 3PC # Third Party Connect Protocol
35 idpr 35 IDPR # Inter-Domain Policy Routing Protocol
37 ddp 37 DDP # Datagram Delivery Protocol
38 idpr-cmtp 38 IDPR-CMTP # IDPR Control Message Transport Proto
39 tp++ 39 TP++ # TP++ Transport Protocol
40 il 40 IL # IL Transport Protocol
41 ipv6 41 IPv6 # Internet Protocol, version 6
42 sip 41 SIP # Simple Internet Protocol
43 sdrp 42 SDRP # Source Demand Routing Protocol
44 ipv6-route 43 IPv6-Route # Routing Header for IPv6
45 sip-sr 43 SIP-SR # SIP Source Route
46 ipv6-frag 44 IPv6-Frag # Fragment Hedaer for IPv6
47 sip-frag 44 SIP-FRAG # SIP Fragment
48 idrp 45 IDRP # Inter-Domain Routing Protocol
49 rsvp 46 RSVP # Reservation Protocol
50 gre 47 GRE # General Routing Encapsulation
51 mhrp 48 MHRP # Mobile Host Routing Protocol
53 esp 50 esp # Encap Security Payload
54 ah 51 AH # Authentication Header
55 i-nlsp 52 I-NLSP # Integrated Net Layer Security TUBA
56 swipe 53 SWIPE # IP with Encryption
57 nhrp 54 NHRP # NBMA Next Hop Resolution Protocol
58 mobile 55 MOBILE # IP Mobility (IP tunneling)
59 ipv6-icmp 58 icmpv6 IPv6-ICMP ICMPv6 # ICMP version 6
60 ipv6-nonxt 59 IPv6-Nonxt # No Next Header for IPv6
61 ipv6-opts 60 IPv6-Opts # Destination Options for IPv6
62 any 61 any # host internal protocol
64 any 63 any # local network
65 sat-expak 64 SAT-EXPAK # SATNET and Backroom EXPAK
66 kryptolan 65 KRYPTOLAN # Kryptolan
67 rvd 66 RVD # MIT Remote Virtual Disk Protocol
68 ippc 67 IPPC # Internet Pluribus Packet Core
69 any 68 any # distributed file system
70 sat-mon 69 SAT-MON # SATNET Monitoring
71 visa 70 VISA # VISA Protocol
72 ipcv 71 IPCV # Internet Packet Core Utility
73 cpnx 72 CPNX # Computer Protocol Network Executive
74 cphb 73 CPHB # Computer Protocol Heart Beat
75 wsn 74 WSN # Wang Span Network
76 pvp 75 PVP # Packet Video Protocol
77 br-sat-mon 76 BR-SAT-MON # Backroom SATNET Monitoring
78 sun-nd 77 SUN-ND # SUN ND PROTOCOL-Temporary
79 wb-mon 78 WB-MON # WIDEBAND Monitoring
80 wb-expak 79 WB-EXPAK # WIDEBAND EXPAK
81 iso-ip 80 ISO-IP # ISO Internet Protocol
83 secure-vmtp 82 SECURE-VMTP # SECURE-VMTP
84 vines 83 VINES # VINES
86 nsfnet-igp 85 NSFNET-IGP # NSFNET-IGP
87 dgp 86 DGP # Dissimilar Gateway Protocol
90 ospfigp 89 OSPFIGP # OSPFIGP
91 sprite-rpc 90 Sprite-RPC # Sprite RPC Protocol
92 larp 91 LARP # Locus Address Resolution Protocol
93 mtp 92 MTP # Multicast Transport Protocol
94 ax.25 93 AX.25 # AX.25 Frames
95 ipip 94 IPIP # IP-within-IP Encapsulation Protocol
96 micp 95 MICP # Mobile Internetworking Control Pro.
97 scc-sp 96 SCC-SP # Semaphore Communications Sec. Pro.
98 etherip 97 ETHERIP # Ethernet-within-IP Encapsulation
99 encap 98 ENCAP # Encapsulation Header
100 any 99 any # private encryption scheme
102 pim 103 PIM # Protocol Independant Multicast
103 ipcomp 108 IPCOMP # IP Payload Compression Protocol
104 reserved 255 Reserved #