Director
Appendix C
Protocol Numbers
The official Assigned Internet Protocol Numbers list is maintained by the Internet Assigned Numbers Authority and can be found at
Num | Keyword | Protocol |
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0 | HOPOPT | IPv6 |
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1 | ICMP | Internet Control Message |
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2 | IGMP | Internet Group Management |
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3 | GGP | |
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4 | IP | IP in IP (encapsulation) |
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5 | ST | Stream |
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6 | TCP | Transmission Control |
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7 | CBT | CBT |
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8 | EGP | Exterior Gateway Protocol |
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9 | IGP | any private interior gateway |
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| (used by Cisco for their |
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| IGRP) |
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10 | BBN- | BBN RCC Monitoring |
| RCC- |
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| MON |
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11 | Network Voice Protocol | |
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12 | PUP | PUP |
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13 | ARGUS | ARGUS |
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14 | EMCON | EMCON |
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15 | XNET | Cross Net Debugger |
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16 | CHAOS | Chaos |
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17 | UDP | User Datagram |
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18 | MUX | Multiplexing |
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19 | DCN- | DCN Measurement Subsys- |
| MEAS | tems |
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20 | HMP | Host Monitoring |
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21 | PRM | Packet Radio Measurement |
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22 | XEROX NS IDP | |
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23 | ||
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24 | ||
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25 | ||
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26 | ||
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27 | RDP | Reliable Data Protocol |
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28 | IRTP | Internet Reliable Transaction |
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29 | ISO Transport Protocol Class | |
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| 4 |
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Num | Keyword | Protocol |
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30 | NETBLT | Bulk Data Transfer Protocol |
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31 | MFE Network Services | |
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| Protocol |
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32 | MERIT- | MERIT Internodal Protocol |
| INP |
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33 | DCCP | Datagram Congestion Control |
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| Protocol |
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34 | 3PC | Third Party Connect Protocol |
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35 | IDPR | |
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| Protocol |
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36 | XTP | XTP |
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37 | DDP | Datagram Delivery Protocol |
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38 | IDPR- | IDPR Control Message |
| CMTP | Transport Proto |
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39 | TP++ | TP++ Transport Protocol |
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40 | IL | IL Transport Protocol |
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41 | IPv6 | Ipv6 |
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42 | SDRP | Source Demand Routing |
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| Protocol |
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43 | IPv6- | Routing Header for IPv6 |
| Route |
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44 | Fragment Header for IPv6 | |
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45 | IDRP | |
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| tocol |
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46 | RSVP | Reservation Protocol |
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47 | GRE | General Routing Encapsula- |
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| tion |
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48 | DSR | Dynamic Source Routing |
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| Protocol |
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49 | BNA | BNA |
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50 | ESP | Encap Security Payload |
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51 | AH | Authentication Header |
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52 | Integrated Net Layer Security | |
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| TUBA |
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53 | SWIPE | IP with Encryption |
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54 | NARP | NBMA Address Resolution |
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| Protocol |
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49
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