List of network protocols

This is a list of individual network protocols, categorised by their nearest OSI model layers.

Contents

1 Layer 1 protocols (physical layer) 2 Layer 2 protocols 3 Layer 2+3 protocols 4 Layer 3+4 protocols 5 Layer 4 protocols 6 Layer 5+ protocols 7 Layer 7 protocols 8 Protocol description languages 9 Other protocols

Layer 1 protocols (physical layer)

• ISDN Integrated Services Digital Network
• PDH Plesiochronous Digital Hierarchy
  • T-carrier (T1, T3 etc)
• RS-232, a serial line interface originally developed to connect modems and computer terminals
• SDH Synchronous Digital Hierarchy
• SONET Synchronous Optical NETworking

Layer 2 protocols

• ARP Address Resolution Protocol
• CDP Cisco Discovery Protocol
• DCAP Data Link Switching Client Access Protocol
• Ethernet
• FDDI Fiber Distributed Data Interface
• HDLC High Level Data Link Control
• L2F Layer 2 Forwarding Protocol
• L2TP Layer 2 Tunneling Protocol
• PPP Point-to-Point Protocol
• PPTP Point-to-Point Tunneling Protocol
• Token ring
• [test]

Layer 2+3 protocols

• X.25
• Frame relay, a simplified version of X.25
• ATM Asynchronous Transfer Mode
• MPLS Multi-protocol label switching
• Signalling System 7, also called SS7, C7 and CCIS7; a common PSTN control protocol.

Layer 3+4 protocols

• Xerox network services (XNS)

Layer 4 protocols

• SPX Sequenced Packet Exchange
• TCP Transmission Control Protocol
• UDP User Datagram Protocol
• SCTP Stream Control Transmission Protocol
• RTP Real-time Transport Protocol

Layer 5+ protocols

• NFS Network File System
• SMB Server Message Block (aka CIFS Common Internet FileSystem)
• 9P Distributed file system protocol developed originally as part of Plan 9

Layer 7 protocols

• FTP File Transfer Protocol
• HTTP HyperText Transport Protocol, used in the World Wide Web
• POP3 Post Office Protocol Version 3
• SNMP Simple Network Management Protocol
• SMTP Simple Mail Transfer Protocol
• Telnet, a remote terminal access protocol
• Gnutella, a peer-to-peer file-swapping protocol
• DNS Domain Name Service
• SSH Secure SHell
• IMAP Internet Message Access Protocol
• NTP Network Time Protocol
• Gopher, a precursor of web search engines
• Finger, which gives user profile information
• NNTP News Network Transfer Protocol
• LDAP Lightweight Directory Access Protocol
• DHCP Dynamic Host Configuration Protocol
• IRC Internet Relay Chat
• Jabber, an instant-messenging protocol
• WebDAV Web Distributed Authoring and Versioning
• DICT Dictionary protocol
• BACnet Building Automation and Control Network protocol

and secure versions of the above (as HTTPS, etc.)

Protocol description languages

• Abstract syntax notation one (ASN.1)

Other protocols

• modbus
• Controller Area Network (CAN)
• Digital Command Control (DCC)
• I²C
• STUN
• SOCKS
• FIX protocol