The TCP/IP family consists of the following protocols:

Link layer:

• : Address Resolution Protocol: Map  to hardware (e.g. ) addresses

• : Reverse ARP: Map hardware (e.g. ) to  addresses

Link layer (serial line):

• : Compressed Serial Line IP: Compressing / Headers for Low-Speed Serial Links (RFC 1144), obsolete

• : The Point-to-Point Protocol

• : The Point-to-Point Multilink Protocol

• : Serial Line IP: Transmission of  datagrams over serial lines (RFC 1055), obsolete

Network layer:

• : Internet Protocol (version 4): transfer IP packets from one host to another. One of the most common protocols today. This is what the Internet is built around.

• : Internet Protocol (version 6): transfer IP packets from one host to another

• : Internet Control Message Protocol (version 4): This is a protocol to report common errors and events in the ,  and  protocols.

• : Internet Control Message Protocol (version 6): This is a protocol to report common errors and events in the ,  and  protocols.

• : IP multicasting

Network layer (routing):

• : Border Gateway Protocol

• : Exterior Gateway Protocol

• : Gateway to Gateway Protocol

• : Interior Gateway Routing Protocol

• : Neighbor Discovery

• : Open Shortest Path First

• : Routing Information Protocol

• : Routing Information Protocol next generation

• : Dynamic Source Routing (Ad-hoc protocol)

Network Layer ( Internet Protocol Security):

• : Authentication Header

• : Encapsulating Security Payload

Transport layer:

• These protocols run atop :

• : Datagram Congestion Control Protocol: stream based, reliable, connection oriented transfer of data

• : datagram (packet) based, reliable, connection oriented transfer of data

• : User Datagram Protocol: datagram (packet) based, unreliable, connectionless transfer of data

• : Lightweight User Datagram Protocol: datagram (packet) based, unreliable, connectionless transfer of data

• : Transmission Control Protocol: stream based, reliable, connection oriented transfer of data

• : / port numbers  protocols run atop , and provide additional transport-layer services:

• : datagram (packet) based, unreliable, connection oriented transfer of time sensitive data

• : RTP's control protocol

Session layer:

• : an API and several protocols providing various networking services.

• : a simple protocol for capturing crashed operating system memory cores over a network

• : Remote procedure calls using Sun's  mechanism

• : Remote procedure calls using the OSF's  mechanism

• : Hyper Text Transfer Protocol: (and other files as well). Probably the best known protocol as it is used to allow users surfing on the Internet.

• : Simple Mail Transfer Protocol: send mails to a mail server

Presentation layer:

• : content encoding (for , , ...) (RFC 2045-2049)

Application layer:

• : Access Node Control Protocol: TCP based L2 control protocol used in service provider DSL and PON Networks.

• : BOOT Protocol: antecessor of , see bellow

• : Dynamic Host Configuration Protocol: distribute , Gateway and  server addresses and alike

• : Domain Name System: translate human readable addresses (e.g. wiki.wireshark.org) into  addresses

• : File Transfer Protocol: file transfer (unsecure)

• : retrieve mails from a mail server

• : Direct Data Placement (part of the iWARP protocol stack)

• : Marker PDU Aligned Framing: adaptation layer between TCP and DDP (part of the iWARP protocol stack)

• : Remote Direct Memory Access Protocol (part of the iWARP protocol stack)

• : Network News Transfer Protocol: news transfer

• : Network Time Protocol: sychronize time between hosts

• : Protocol for Carrying Authentication for Network Access: user authentication for network access

• : Post Office Protocol: receive mails from a mail server

• : remote user authentication and accounting

• : remote login: remote shell access (unsecure)

• : Remote SHell: remote shell access (unsecure)

• : Realm Specific IP (RFC 3102-3104)

• : Secure SHell: encrypted remote shell access

• : Simple Network Management Protocol: network management (RFC 1157,1901-10,2271-75)

• : remote shell access (unsecure) (RFC 854,855,1700)

• : Trivial File Transfer

• : Server/Application State Protocol (RFC 4678)

Unsorted:

• : Uniform Resource Names (RFC 1737)

• : Uniform Resource Locators (RFC 1738)