| Code Value | Definition |
|---|---|
| ATP | AppleTalk Transaction Protocol |
| CUDP | Cyclic UDP |
| DCCP | Datagram Congestion Control Protocol |
| FCP | Fibre Channel Protocol |
| IL | IL Protocol |
| MPTCP | Multipath TCP |
| RDP | Reliable Data Protocol |
| RUDP | Reliable User Datagram Protocol |
| SCTP | Stream Control Transmission Protocol |
| SPX | Sequenced Packet Exchange |
| SST | Structured Stream Transport |
| TCP | Transmission Control Protocol |
| UDP | User Datagram Protocol |