List of network protocols (OSI model)

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Template:More citations needed This article lists protocols, categorized by the nearest layer in the Open Systems Interconnection model. This list is not exclusive to only the OSI protocol family. Many of these protocols are originally based on the Internet Protocol Suite (TCP/IP) and other models and they often do not fit neatly into OSI layers.

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Layer 1 (physical layer)

Network Topology

Layer 2.5

  • ARP Address Resolution Protocol
  • MPLS Multiprotocol Label Switching
  • PPPoE Point-to-Point Protocol over Ethernet
  • TIPC Transparent Inter-process Communication

Layer 3 (Network Layer)

Layer 3+4 (Protocol Suites)

Layer 4 (Transport Layer)

  • AEP AppleTalk Echo Protocol
  • AH Authentication Header over IP or IPSec
  • DCCP Datagram Congestion Control Protocol
  • ESP Encapsulating Security Payload over IP or IPSec
  • FCP Fibre Channel Protocol
  • IL Originally developed as transport layer for 9P
  • iSCSI Internet Small Computer System Interface
  • NetBIOS NetBIOS, File Sharing and Name Resolution
  • NBF NetBIOS Frames protocol
  • NBP Name Binding Protocol {for AppleTalk}
  • QUIC
  • SCTP Stream Control Transmission Protocol
  • Sinec H1 for telecontrol
  • TUP, Telephone User Part
  • SPX Sequenced Packet Exchange
  • TCP Transmission Control Protocol
  • UDP User Datagram Protocol
  • VXLAN Virtual eXtensible LAN

Layer 5 (Session Layer)

This layer, presentation Layer and application layer are combined in TCP/IP model.

  • 9P Distributed file system protocol developed originally as part of Plan 9
  • ADSP AppleTalk Data Stream Protocol
  • ASP AppleTalk Session Protocol
  • H.245 Call Control Protocol for Multimedia Communications
  • iSNS Internet Storage Name Service
  • NetBIOS, File Sharing and Name Resolution protocol - the basis of file sharing with Windows.
  • NetBEUI, NetBIOS Enhanced User Interface
  • NCP NetWare Core Protocol
  • PAP Printer Access Protocol
  • RPC Remote Procedure Call
  • RTCP RTP Control Protocol
  • SDP Session Direct Protocol
  • SMB Server Message Block
  • SMPP Short Message Peer-to-Peer
  • SOCKS "SOCKetS"
  • ZIP Zone Information Protocol {For AppleTalk}
  • This layer provides session management capabilities between hosts. For example, if some host needs a password verification for access and if credentials are provided then for that session password verification does not happen again. This layer can assist in synchronization, dialog control and critical operation management (e.g., an online bank transaction).

Layer 6 (Presentation Layer)

  • TLS Transport Layer Security<ref name=":0">{{#invoke:citation/CS1|citation

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  • SSL Secure Socket Tunneling<ref name=":0" />
  • AFP Apple Filing Protocol<ref name=":0" />
  • Independent Computing Architecture (ICA), the Citrix system core protocol
  • Lightweight Presentation Protocol (LPP)<ref name=":0" />
  • NetWare Core Protocol (NCP)
  • Network Data Representation (NDR)<ref name=":0" />
  • Tox, The Tox protocol is sometimes regarded as part of both the presentation and application layer
  • eXternal Data Representation (XDR)<ref name=":0" />
  • X.25 Packet Assembler/Disassembler Protocol (PAD)

Layer 7 (Application Layer)

Other protocols

Protocol description languages

See also

References

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Further reading

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