Protocols

Description Glossary RFCs Publications Obsolete RFCs

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Description:

SNMP MIBs:
Working groups:
IANA: IANA: Protocol registries.
Links: 

A communication protocol is a set of rules and message formats that entities must follow to exchange those messages.

OSI reference model.
ISO formulated the OSI model which consists of seven layers of specified protocol standards for network communications software. The OSI model has come to be the de facto organizational model for describing protocol layering. The layers in the model are:

LayerDescription
7Application.
6Presentation.
5Session.
4Transport.
3Network.
2Data Link.
1Physical.

Glossary:

Application Layer.
Layer seven of the OSI model. This layer is responsible for managing communications between user applications.

Data Link Layer.
Layer two of the OSI model. Responsible for packing the data from the physical layer into frames. This layer can detect and/or correct errors and manages the data flow between nodes.

Network Layer.
Layer three of the OSI model. This layer is responsible for routing data between nodes.

Physical Layer.
Layer one of the OSI model. Defines the electrical and mechanical specifications of the transmission medium and the interface hardware. Additionally, it describes the method for how data is sent and received on the medium.

Presentation Layer.
Layer six of the OSI model. This layer is responsible for data representation translation between nodes. Encryption and compression protocols are usually categorized here.

Session Layer.
Layer five of the OSI model. This layer is responsible for establishing, synchronizing and maintaining communications channels between nodes.

Transport Layer.
Layer four of the OSI model. This layer is responsible for reliable data transmission between nodes.


1

1822, Host Access Protocol.


3

3DESE, PPP Triple-DES Encryption Protocol.
PPP protocol suite, encryption protocol.


A

AAL1.
ATM protocol suite.

AAL2, ATM Adaptation Layer 2.
ATM protocol suite.

AAL3/4.
ATM protocol suite.

AAL5, ATM Adaptation Layer 5.
ATM protocol suite.

AARP, AppleTalk Address Resolution Protocol.
AppleTalk protocol suite, network layer protocol.

ACAP, Application Configuration Access Protocol.
TCP/IP protocol suite, application layer protocol.

ADCCP, Advanced Data Communications Control Protocol.

ADSP, AppleTalk Data Stream Protocol.
AppleTalk protocol suite, session layer protocol.

AEP, AppleTalk Echo Protocol.
AppleTalk protocol suite, transport layer protocol.

AERO, Asymmetric Extended Route Optimization.
TCP/IP protocol suite, application layer protocol.

AFP, AppleTalk Filing Protocol.

AgentX.
TCP/IP protocol suite, application layer protocol.

AH, IP Authentication Header.
TCP/IP protocol suite, transport layer protocol.

AHIP, ARPANET Host Access Protocol.

AMAP, Automatic Multicast Access Protocol.
TCP/IP protocol suite, application layer protocol.
TBD (UDP).

AMT, IPv4 Automatic Multicast Without Explicit Tunnels.
TCP/IP protocol suite, application layer protocol.
TBD (UDP).

AMTP, Authenticated Mail Transfer Protocol.
TCP/IP protocol suite, application layer message transfer protocol.

ANCP, Access Node Control Protocol.
TCP/IP protocol suite, application layer protocol.

AODV, Ad hoc On-Demand Distance Vector.
TCP/IP protocol suite, application layer routing protocol.

AoE, ATA over Ethernet.
Link layer protocol.

APEX, Application Exchange Core.
TCP/IP protocol suite, application layer protocol.

ARA, AppleTalk Remote Access.

ARDP, Access Right Distribution Protocol.
TCP/IP protocol suite, application layer protocol.
TBD (UDP).

ARIP, Access Router Information Protocol.
TCP/IP protocol suite, application layer protocol.
TBD (UDP).

ARP, Address Resolution Protocol.
TCP/IP protocol suite, network layer address resolution protocol.

ASAP, Aggregate Server Access Protocol.
TCP/IP protocol suite, application layer protocol.

ASP, AppleTalk Session Protocol.
AppleTalk protocol suite, session layer protocol.

ATCP, PPP AppleTalk Control Protocol.
PPP protocol suite, network control protocol.

ATCP, Automatic Telephone Configuration Protocol.
TCP/IP protocol suite, application layer protocol.
22222 (UDP).

ATM, Asynchronous Transfer Mode.
ATM protocol suite.

ATMARP, ATM Address Resolution Protocol.

ATMP, Ascend Tunnel Management Protocol.
TCP/IP protocol suite, application layer tunneling protocol.

ATP, AppleTalk Transaction Protocol.
AppleTalk protocol suite, transport layer protocol.

AURP, AppleTalk Update-based Routing Protocol.
TCP/IP protocol suite, application layer routing protocol.

Authentication Server Protocol.
TCP/IP protocol suite, application layer protocol.

AX.25.
TCP/IP protocol suite, transport layer protocol.


B

Babel.
TCP/IP protocol suite, application layer distance vector routing protocol.

BACP, PPP Bandwidth Allocation Control Protocol.
PPP protocol suite, link control protocol.

BAP, PPP Bandwidth Allocation Protocol.
PPP protocol suite, link control protocol.

BCP, PPP Bridging Control Protocol.
PPP protocol suite, network control protocol.

BEEP, Blocks Extensible Exchange Protocol.
TCP/IP protocol suite, application layer encapsulation protocol.

BFCP, Binary Floor Control Protocol.
TCP/IP protocol suite, application layer protocol.

BFD, Bidirectional Forwarding Detection.
TCP/IP protocol suite, application layer protocol.

BFTP, Background File Transfer Program.
TCP/IP protocol suite, application layer file transfer protocol.

BGMP, Border Gateway Multicast Protocol.
TCP/IP protocol suite, application layer protocol.

BGP, Border Gateway Protocol.
TCP/IP protocol suite, application layer routing protocol. The primary function of a BGP speaking system is to exchange network reachability information with other BGP systems. This network reachability information includes information on the list of Autonomous Systems that reachability information traverses. This information is sufficient for constructing a graph of AS connectivity for this reachability, from which routing loops may be pruned and, at the AS level, some policy decisions may be enforced.

BGRP, Border Gateway Reservation Protocol.

BitTorrent.
bittorrent.org

BMP, BGP Monitoring Protocol.
TCP/IP protocol suite, application layer protocol.
TBD (TCP).

Boomerang.

BOOTP, Bootstrap Protocol.
TCP/IP protocol suite, application layer configuration protocol.

BP, Bundle Protocol.

BSD, PPP BSD UNIX Compression Protocol.
PPP protocol suite, compression protocol.

Bundle Discovery Protocol.

BVCP, PPP Banyan Vines Control Protocol.
PPP protocol suite, network control protocol.


C

CAP, Calendar Access Protocol.
TCP/IP protocol suite, application layer protocol.

CAPWAP, Control And Provisioning of Wireless Access Points.
TCP/IP protocol suite, application layer protocol.

CARD, Candidate Access Router Discovery.
TCP/IP protocol suite, application layer protocol.

CARP, Cache Array Routing Protocol.
Microsoft.

CASP, Cross-Application Signaling Protocol.

CBCP, CallBack Control Protocol.

CBT, Core Based Trees.
TCP/IP protocol suite, transport layer multicast routing protocol.

CCMP, Centralized Conferencing Manipulation Protocol.

CCP, PPP Compression Control Protocol.
PPP protocol suite, compression protocol.

CDP, Certificate Discovery Protocol.

CDP, Cisco Discovery Protocol.
A Cisco proprietary protocol.

CFDP, Coherent File Distribution Protocol.
TCP/IP protocol suite, application layer protocol.

CGMP, Cisco Group Multicast Protocol.
Ethertype (0x2001).

CHAP, PPP Challenge Handshake Authentication Protocol.
PPP protocol suite, authentication Link Control Protocol.

Chargen, Character Generator Protocol.
TCP/IP protocol suite, application layer character generator protocol.

CIFS, Common Internet File System.

CIP, Common Indexing Protocol.
TCP/IP protocol suite, application layer protocol.

CLDAP, Connection-less Lightweight X.500 Directory Access Protocol.
TCP/IP protocol suite, application layer protocol.

CLNP, Connectionless Network Protocol, ISO 8473.
ISO protocol suite, network layer protocol.

CLTP, Connectionless Transport Protocol.

CMIP, Common Management Information Protocol.

CMOT, The Common Management Information Services and Protocol over TCP/IP.

CMP, Certificate Management Protocols.
TCP/IP protocol suite, application layer protocol.

CNAP, Content Network Advertisement Protocol.
TCP/IP protocol suite, application layer protocol.
TBD (TCP).

CNRP, Common Name Resolution Protocol.
TCP/IP protocol suite, application layer protocol.

CoAP, Constrained Application Protocol.
TCP/IP protocol suite, application layer protocol.

CONP, Connection-Oriented Network Protocol.

COPS, Common Open Policy Service.
TCP/IP protocol suite, application layer protocol.

CRANE, Common Reliable Accounting for Network Element.
TCP/IP protocol suite, application layer protocol.

CSLAP, Cisco Service Level Assurance Protocol.
TCP/IP protocol suite, application layer protocol.
1167 (UDP).

CSLIP, Compressed SLIP.

CTCP, Connectionless Tunneling Control Protocol.
TCP/IP protocol suite, application layer tunneling protocol.
TBD (UDP).

CTP, CAPWAP Tunneling Protocol.

CTP, Context Transfer Protocol.
TCP/IP protocol suite, application layer protocol.
TBD (UDP).

CVP, Certificate Validation Protocol.
TBD (TCP).

CXTP, Context Transfer Protocol.
TCP/IP protocol suite, application layer protocol.

CyberCash Credit Card Protocol.


D

DAP, Directory Access Protocol.

Daytime, Daytime Protocol.
TCP/IP protocol suite, application layer time protocol.

DCAP, Data Link Switching Client Access Protocol.
TCP/IP protocol suite, application layer time protocol.

DCCP, Datagram Congestion Control Protocol.
TCP/IP protocol suite, transport layer protocol. This protocol provides bidirectional unicast connections of congestion-controlled unreliable datagrams. DCCP is suitable for applications that transfer fairly large amounts of data and that can benefit from control over the tradeoff between timeliness and reliability.

DCE, PPP for Data Compression in Data Circuit-Terminating Equipment.
PPP protocol suite, compression protocol.

DDP, Datagram Delivery Protocol.
AppleTalk protocol suite, network layer protocol.

DDP, Device Discovery Protocol.

DDP, Direct Data Placement Protocol.
TCP/IP protocol suite, application layer protocol.

Deflate, PPP Deflate Protocol.
PPP protocol suite, compression protocol.

DESE, PPP DES Encryption Protocol.
PPP protocol suite, encryption protocol.

DESE-bis, PPP DES Data Encryption Standard Protocol.
PPP protocol suite, encryption protocol.

DHCP, Dynamic Host Configuration Protocol.
TCP/IP protocol suite, application layer configuration protocol. This protocol provides a framework for passing configuration information to hosts on a IP network. DHCP is based on the BOOTP protocol and adds the capability of automatic allocation of reusable network addresses and additional configuration options. DHCP captures the behavior of BOOTP relay agents, and DHCP participants can interoperate with BOOTP participants

DHCP Failover Protocol.
TCP/IP protocol suite, application layer protocol.

DHCPv6, Dynamic Host Configuration Protocol for IPv6.
TCP/IP protocol suite, application layer configuration protocol. This protocol enables a configuration server to pass IPv6 specific configuration parameters to IPv6 nodes.

DIAMETER.
TCP/IP protocol suite, application layer protocol.

DICT, Dictionary Server Protocol.
TCP/IP protocol suite, application layer protocol.

Discard, Discard Protocol.
TCP/IP protocol suite, application layer protocol.

DISTRIBUTE.
TCP/IP protocol suite, application layer protocol.

DIXIE.
TCP/IP protocol suite, application layer protocol.

DMSP, Distributed Mail Service Protocol.
TCP/IP protocol suite, application layer protocol.

DNCP, PPP DECnet Phase IV Control Protocol.
PPP protocol suite, network control protocol.

DNP, Distrubuted Network Protocol.

DNS, Domain Name System.
TCP/IP protocol suite, application layer name space translation protocol.

DRAP, Data Link Switching Remote Access Protocol.
TCP/IP protocol suite, application layer protocol.

DRARP, Dynamic RARP.
TCP/IP protocol suite, network layer address resolution protocol.

DRP, Director Response Protocol.

DSKPP, Dynamic Symmetric Key Provisioning Protocol.

DSLCP, Dynamically Switched Link Control Protocol.

DSNP, Dynamic Service Negotiation Protocol.
TBD (UDP).

DSR, Dynamic Source Routing Protocol.
TCP/IP protocol suite, transport layer protocol.

DTCP: Dynamic Tasking Control Protocol.
TBD (UDP).

DTCP, Dynamic Tunnel Configuration Protocol.
TCP/IP protocol suite, application layer protocol.

DTLS, Datagram Transport Layer Security.
TCP/IP protocol suite, application layer protocol.
This protocol was designed to provide communications privacy for datagram protocols. This allows client/server applications to communicate in a way that is designed to prevent eavesdropping, tampering, or message forgery.

DTP/DIA, Data Transfer Protocol for Distributed Information Acquisition.
TCP/IP protocol suite, application layer protocol.

DUA, DPNSS/DASS2 User Adaptation.

DVMP, Distance Vectored Monitoring Protocol.
TCP/IP protocol suite, application layer protocol.
720 (UDP).

DVMRP, Distance Vector Multicast Routing Protocol.
TCP/IP protocol suite, interior gateway distance vector routing protocol.

DYMO, Dynamic MANET On-demand.
TCP/IP protocol suite, application layer routing protocol.
TBD (UDP).


E

EAP, PPP Extensible Authentication Protocol.
PPP protocol suite, link control protocol.

EAPOL, EAP over LAN.
Network layer protocol.
Ethertype 0x8E88.

EAPS, Ethernet Automatic Protection Switching.
Network layer protocol.

Echo.
TCP/IP protocol suite, application layer protocol.

ECP, PPP Encryption Control Protocol.
PPP protocol suite, network control protocol.

EGP, Exterior Gateway Protocol.
TCP/IP protocol suite, transport layer exterior routing protocol.

EIGRP, Enhanced IGRP.
TCP/IP protocol suite, application layer protocol.
IP protocol 88.
Multicast address 224.0.0.10.

ELAP, EtherTalk Link Access Protocol.

Encapsulation Header.

EIP, Extended Internet Protocol.

EMCON, Emission Control Protocol.

EMP, Edge Mobility Protocol.

EMSD, Efficient Mail Submission and Delivery.
TCP/IP protocol suite, application layer protocol.

ENRP, Enpoint Name Resolution Protocol.
TCP/IP protocol suite, application layer protocol.

EPP, Extensible Provisioning Protocol.
TCP/IP protocol suite, application layer protocol.

ES-IS, ISO 9542.
ISO protocol suite.

ESMTP, Extended Simple Mail Transfer Protocol.
TCP/IP protocol suite, application layer message transfer protocol.

ESP, Encapsulating Security Payload.
TCP/IP protocol suite, transport layer protocol.

ESRO, Efficient Short Remote Operations.
TCP/IP protocol suite, application layer protocol.

ETFTP, Enhanced Trivial File Transfer Protocol.
TCP/IP protocol suite, application layer file transfer protocol.

EtherCAT.
Network layer protocol.
Ethertype 0x88A4.
34980 (UDP).

EtherIP.
TCP/IP protocol suite, network layer tunneling protocol.


F

FACT, ForwArding and Control ElemenT.
TCP/IP protocol suite, application layer protocol.

FANP, Flow Attribute Notification Protocol.
ATM protocol suite.

FCIP, Fibre Channel Over TCP/IP.
TCP/IP protocol suite, application layer protocol.

FDDI, Fiber Distributed Data Interface.
Data link and physical layer protocol.

Fibre Channel.
Data link layer protocol.

Finger.
TCP/IP protocol suite, application layer user information protocol.

FLAP, FDDITalk Link Access Protocol.

FLUTE, File Delivery over Unidirectional Transport.
File transfer protocol.

ForCES, Forwarding and Control Element Separation.
TCP/IP protocol suite, application layer protocol.

Frame relay.
Data link layer protocol.

FTAM, File Transfer, Access, and Management.

FTP, File Transfer Protocol.
TCP/IP protocol suite, application layer file transfer protocol.

FZA, PPP Gandalf FZA Compression Protocol.
PPP protocol suite, compression protocol.


G

GAP, Gateway Access Protocol.
Attachmate.

GARP, Generic Attribute Registration Protocol.

GDOI, Group Domain of Interpretation.
TCP/IP protocol suite, application layer protocol.

GDP, Gateway Discovery Protocol.
TCP/IP protocol suite, application layer protocol.

GGP, Gateway to Gateway Protocol.
TCP/IP protocol suite, transport layer routing protocol.

GIST, General Internet Signaling Transport.
TCP/IP protocol suite, application layer protocol.

GKDP, Group Key Distribution Protocol.
TCP/IP protocol suite, application layer key distribution protocol.

GKMP, Group Key Management Protocol.

Gopher.
TCP/IP protocol suite, application layer protocol.

GRE, Generic Routing Encapsulation.
TCP/IP protocol suite, transport layer encapsulation protocol.

Gryphon.
TCP/IP protocol suite, application layer protocol.
7000 (TCP).
http://www.dgtech.com/gryphon/sys/www/docs/html/GCprotocol/

GSAKMP, Group Secure Association Key Management Protocol.
TCP/IP protocol suite, application layer protocol.

GSMP, General Switch Management Protocol.
ATM protocol suite, switch control protocol.

GTEP, Generalized Traffic Engineering Protocol.
TCP/IP protocol suite, application layer protocol.

GTTP, Generic Tunnel Tracing Protocol.
TCP/IP protocol suite, application layer protocol.

GVRP, GARP VLAN Registration Protocol.


H

H.224

H.281

H.323

[RFC 3508] H.323 Uniform Resource Locator (URL) Scheme Registration.

H.350

Handle System Protocol.
TCP/IP protocol suite, application layer protocol.

HAP, Host Access Protocol.
Network layer protocol.

HDLC.

HEMP, High-Level Entity Management Protocol.
TCP/IP protocol suite.

HIP, Host Identity Protocol.
TCP/IP protocol suite, transport layer protocol.

HIPPI, High Performance Parallel Interface.

HMMP, HyperMedia Management Protocol.

HMP, Host Monitoring Protocol.
TCP/IP protocol suite, transport layer protocol.

Host-Host Protocol.
ARPA Network protocol.

HOSTNAME.
TCP/IP protocol suite, application layer protocol.

HSRP, Hot Standby Router Protocol.
TCP/IP protocol suite, application layer protocol.

HTCP, Hyper Text Caching Protocol.
TCP/IP protocol suite, application layer protocol.

HTTP, HyperText Transfer Protocol.
TCP/IP protocol suite, application layer file transfer protocol.


I

IAP, Intrusion Alert Protocol.

IAPP, Inter-Access Point Protocol.

IAX, Inter-Asterisk eXchange.
TCP/IP protocol suite, application layer protocol.
4569 (UDP).

ICA, Intelligent Console Architecture.

ICAP, Internet Content Adaptation Protocol.
TCP/IP protocol suite, application layer protocol.

ICMP, Internet Control Message Protocol.
TCP/IP protocol suite, transport layer control protocol.

ICMPv6, Internet Control Message Protocol for IPv6.
TCP/IP protocol suite, transport layer control protocol.

ICP, Internet Cache Protocol.
TCP/IP protocol suite, application layer protocol.

Identification Protocol.
TCP/IP protocol suite, application layer protocol.

IDP, Independent Datagram Protocol.

IDPR, Inter-Domain Policy Routing Protocol.
TCP/IP protocol suite, transport layer protocol.

IDRP, Inter-Domain Routing Protocol, ISO 10747.
ISO protocol suite.

IDXP, Intrusion Detection Exchange Protocol.
TCP/IP protocol suite, application layer protocol.

IEEE 802.1.

IEEE 802.1X.
802.1X enables authenticated access to IEEE 802 media, including Ethernet, Token Ring, and 802.11 wireless LANs. Although RADIUS support is optional within IEEE 802.1X, it is expected that many IEEE 802.1X authenticators will function as RADIUS clients.

IEEE 802.2.

IEEE 802.3, Ethernet.
Data link and physical layer protocol.

IEEE 802.3ad.

IEEE 802.3af.

IEEE 802.4, Token Bus.

IEEE 802.5, Token Ring.

IEEE 802.11.
Also known as Wireless Ethernet or Wireless Fidelity (Wi-Fi).

IEEE 802.12.

IEEE 802.15.

IEEE 802.15.4.

IEEE 802.16.

IEEE 802.17, Resilient Packet Ring.
http://www.ieee802.org/17/

IEEE 802.21.

IEEE 1394, Firewire.
Data link and physical layer protocol.

iFCP, Internet Fibre Channel Protocol.
TCP/IP protocol suite, application layer protocol.

IFMP, Ipsilon Flow Management Protocol.
TCP/IP protocol suite, transport layer protocol.

IGAP, IGMP for user Authentication Protocol.
TCP/IP protocol suite, transport layer multicasting protocol.

IGMP, Internet Group Management Protocol.
TCP/IP protocol suite, transport layer multicasting protocol.

IGP, Interior Gateway Protocol.

IGRP, Interior Gateway Routing Protocol.
TCP/IP protocol suite, transport layer interior gateway protocol.

IIOP, Internet Inter-ORB Protocol.

IISP, Interim-Interswitch Signaling Protocol.

IKE, Internet Key Exchange.
TCP/IP protocol suite, application layer protocol.

IMAP, Internet Message Access Protocol.
TCP/IP protocol suite, application layer email protocol.

iMIP, iCalendar Message-Based Interoperability Protocol.
TCP/IP protocol suite, application layer protocol.

IMPP, Instant Messaging and Presence Protocol.
TCP/IP protocol suite, application layer protocol.

IMSP, Internet Message Support Protocol.

INAP, Intelligent Network Application Protocol.

InARP, Inverse Address Resolution Protocol.
TCP/IP protocol suite, network layer address resolution protocol.

InATMARP, Inverse ATM Address Resolution Protocol.

InfiniBand.
Link layer protocol.

Internet Message Protocol.
TCP/IP protocol suite, application layer protocol.

Internet Name Server.
TCP/IP protocol suite, application layer protocol.

IP, Internet Protocol.
TCP/IP protocol suite, network layer protocol.

IP in IP Encapsulation.
TCP/IP protocol suite, transport layer protocol.

IP Mobility.

IPCP, PPP Internet Protocol Control Protocol.
PPP protocol suite, network control protocol.

IPFIX, IP Flow Information Export.
TCP/IP protocol suite, application layer protocol.

IPHC, PPP Internet Protocol Header Compression.
PPP protocol suite, network control protocol.

IPMP, IP Measurement Protocol.
TCP/IP protocol suite, transport layer control protocol.

IPng, IP Next Generation Protocol.

IPP, Internet Printing Protocol.
TCP/IP protocol suite, application layer protocol.

IPPCP, IP Payload Compression Protocol.
TCP/IP protocol suite, transport layer protocol.

ipsec-nat-t, IPsec NAT-Traversal.
TCP/IP protocol suite, application layer protocol.

IPv6, Internet Protocol version 6.
TCP/IP protocol suite, network layer protocol.

IPV6CP, PPP IPv6 Control Protocol.
PPP protocol suite, network control protocol.

IPX, Internet Packet Exchange.
Novell NetWare protocol suite, network layer protocol.

IPXCP, PPP IPX Control Protocol.
PPP protocol suite, network control protocol.

IPXF.

IRC, Internet Relay Chat.
TCP/IP protocol suite, application layer text based multi-user chat protocol.

IRIS, Internet Registry Information Service.
TCP/IP protocol suite, application layer protocol.

IRIS-LWZ, IRIS Lightweight using Compression.
TCP/IP protocol suite, application layer protocol.
715 (UDP).

IRTP, Internet Reliable Transaction Protocol.
TCP/IP protocol suite, transport layer protocol.

IS-IS, Intermediate System-to-Intermediate System, ISO 10589.
OSI protocol suite,.interior gateway routing protocol.

ISAKMP, Internet Security Association and Key Management Protocol.
TCP/IP protocol suite, application layer protocol.

ISATAP, Intra-Site Automatic Tunnel Addressing Protocol.
TCP/IP protocol suite, link layer protocol.

iSCSI, Internet Small Computer System Interface.
TCP/IP protocol suite, application layer protocol.

ISMP, Internet Message Support Protocol.

ISMP, InterSwitch Message Protocol.
Cabletron proprietary.

iSNS, Internet Storage Name Service.
TCP/IP protocol suite, application layer protocol.

ISO-IP.
TCP/IP protocol suite, transport layer protocol.

ISTP, Information Space Transfer Protocol.
Perspecta proprietary.

ITOT, ISO Transport Service on top of TCP.

ITRP, IP Telephony Routing Protocol.

IUA, ISDN Q.921-User Adaptation.
TCP/IP protocol suite, application layer protocol.


J

Jabber.
5222 (TCP) client-server; 5269 (TCP) server-server.


K

Kerberos.
TCP/IP protocol suite, application layer protocol.

Kermit.
TCP/IP protocol suite, application layer protocol.

KINK, Kerberized Internet Negotiation of Keys.
TCP/IP protocol suite, application layer protocol.

KIP, Kinetics Internet Protocol.
AppleTalk protocol suite. (RFC 1742) KIP is a protocol for encapsulating and routing AppleTalk datagrams over an IP internet.

kx509
TCP/IP protocol suite, application layer protocol.


L

L2F, Layer 2 Forwarding.
TCP/IP protocol suite, application layer tunneling protocol.

L2TP, Level 2 Tunneling Protocol.
TCP/IP protocol suite, application layer tunneling protocol.

LAPB.

LAPD.

LAT.

LBX, Low-bandwidth X.

LCP, PPP Link Control Protocol.
PPP protocol suite, link control protocol.

LCVP, Lightweight Certificate Validation Protocol.
TCP/IP protocol suite, application layer protocol.

LDAP, Lightweight Directory Access Protocol.
TCP/IP protocol suite, application layer directory service access protocol.

LDP, Label Distribution Protocol.
TCP/IP protocol suite, application layer protocol.

LDP, Loader Debugger Protocol.
TCP/IP protocol suite, application layer protocol.

LFAP, Light-weight Flow Admission Protocol.
TCP/IP protocol suite, application layer protocol.

LH-DMHA, Last Hop Dormant Mode Host Alerting Protocol.
TBD (UDP).

LISP, Locator/ID Separation Protocol.
TCP/IP protocol suite, application layer protocol.
4342 (UDP).

Location-Independent Data/Software Integrity Protocol.

LLAP, LocalTalk Link Access Protocol. AppleTalk protocol suite.
(RFC 1742) A medium-speed data-link protocol designed for low cost and plug-and-play operation.

LLDP, Link Layer Discovery Protocol.
Link layer protocol.
IEEE 802.1AB.
Ethertype 0x88CC.

LLMNR, Linklocal Multicast Name Resolution.
TCP/IP protocol suite, application layer protocol.

LMP, Link Management Protocol.
TCP/IP protocol suite, application layer protocol.

LMTP, Local Mail Transfer Protocol.
TCP/IP protocol suite, application layer message transfer protocol.

Logiweb.
TCP/IP protocol suite, application layer protocol.
TBD (UDP).
MIME type application/prs.logiweb.

LoST, Location-to-Service Translation.
TCP/IP protocol suite, application layer protocol.

LPP, Lightweight Presentation Protocol.

LPR.
TCP/IP protocol suite, application layer protocol.

LQR, PPP Link Quality Report Protocol.
PPP protocol suite, link control protocol.

LTP, Licklider Transmission Protocol.
TCP/IP protocol suite, application layer protocol.

LWAPHP, Light Weight AP Handover Protocol.

LWAPP, Light Weight Access Point Protocol.
Network and application layer protocol.

LXI event message.
5044 ().

LZS, PPP Stac LZS Compression Protocol.
PPP protocol suite, compression protocol.

LZS-DCP, PPP LZS-DCP Compression Protocol.
PPP protocol suite, compression protocol.


M

M2PA, MTP2 User Peer-to-peer Adaptation Layer.
SS7, TCP/IP protocol suite, application layer protocol.
This protocol is used between SS7 Signalling Points employing the MTP Level 3 protocol. The SS7 Signalling Points may also employ standard SS7 links using the SS7 MTP Layer 2 to provide transport of MTP Layer 3 signalling messages.

M2UA, MTP2-User Adaptation.
SS7, TCP/IP protocol suite, application layer protocol.

M3UA, MTP3-User Adaptation.
SS7, TCP/IP protocol suite, application layer protocol.

MADCAP, Multicast Address Dynamic Client Allocation Protocol.
TCP/IP protocol suite, application layer configuration protocol.

ManageSieve.
TCP/IP protocol suite, application layer protocol.

MANET, Mobile Ad Hoc Network.
TCP/IP protocol suite, application layer protocol.

MAPOS, Multiple Access Protocol over SONET/SDH.
Link layer protocol.

MASC, Multicast Address-Set Claim.
TCP/IP protocol suite, application layer protocol.

MATIP, Mapping of Airline Traffic over Internet Protocol.
TCP/IP protocol suite, application layer protocol.

Mbus, Message Bus.
TCP/IP protocol suite, application layer protocol.

MCOP, Multicast Control Protocol.
TCP/IP protocol suite, application layer protocol.
TBD (TCP, UDP).

mDNS, Multicast DNS.
TCP/IP protocol suite, application layer protocol.
5353 (UDP).

Megaco.
TCP/IP protocol suite, application layer protocol.

MFTP, Multicast File Transfer Protocol.
StarBurst Communications (www.starburstcom.com).

MGCP, Multimedia Gateway Control Protocol.
TCP/IP protocol suite, application layer protocol.

MHTP, Multi Homing Translation Protocol.
TCP/IP protocol suite, application layer protocol.
7777 (UDP).

MIKEY, Multimedia Internet KEYing.
TCP/IP protocol suite.

Minger.
TCP/IP protocol suite, application layer protocol.
4069 (UDP).

Minimal Encapsulation Protocol.
TCP/IP protocol suite.

MLD, Multicast Listener Discovery.
TCP/IP protocol suite, transport layer control protocol. The purpose of this protocol is to enable each IPv6 router to discover the presence of multicast listeners on its directly attached links and to determine specifically which multicast addresses are of interest to those nodes.

MLDA, Multicast Listener Discovery Authentication.
TCP/IP protocol suite, transport layer protocol.
IP protocol 58.

Mobile IP.
TCP/IP protocol suite, application layer protocol.

Mobility Header.
TCP/IP protocol suite, transport layer protocol.

MOP, Maintenance Operation Protocol.

MOSPF, Multicast Open Shortest Path First.
TCP/IP protocol suite, link state routing protocol.

MP, PPP Multilink Protocol.
PPP protocol suite, network layer protocol.

MP+, PPP Ascend's Multilink Protocol Plus.
PPP protocol suite, network layer protocol.

MPA, Marker PDU Aligned Framing.
TCP/IP protocol suite, application layer protocol.

MPCP, Multi-Point Control Protocol.
Network layer protocol.
Ethertype 0x8808.

MPLS, Multi-Protocol Label Switching.
TCP/IP protocol suite, network layer protocol.

MPLS Echo.
TCP/IP protocol suite, application layer protocol.

MPLSCP, MPLS Control Protocol.
PPP protocol suite, network control protocol.

MPP, Message Posting Protocol.
TCP/IP protocol suite, application layer protocol.

MPPC, Microsoft Point-To-Point Compression Protocol.
PPP protocol suite, compression protocol.

MPPE, Microsoft Point-To-Point Encryption Protocol.
PPP protocol suite, encryption protocol.

MRCP, Media Resource Control Protocol.
TCP/IP protocol suite, application layer protocol.

MRCP, Mobile Router Cooperation Protocol.
TCP/IP protocol suite, application layer protocol.
UDP (TBD).

MRD, Multicast Router Discovery.
TCP/IP protocol suite, transport layer multicast discovery protocol.

MRSP, Multicast Router-Switch Protocol.

MS-CHAP, Microsoft PPP CHAP Extensions.
PPP protocol suite, link control protocol.

MSDP, Multicast Source Discovery Protocol.
TCP/IP protocol suite, application layer protocol.

MSRP, Message Session Relay Protocol.
TCP/IP protocol suite, application layer protocol.

MTOCP, Multiparty Transport Overlay Control Protocol.
TCP/IP protocol suite, application layer protocol.
TCP (11224).

MTP, Mail Transfer Protocol.
TCP/IP protocol suite, application layer protocol.

MTP, Multicast Transport Protocol.
TCP/IP protocol suite, transport layer protocol.

MTQP, Message Tracking Query Protocol.
TCP/IP protocol suite, application layer protocol.

MUPDATE, Malbox Update.
TCP/IP protocol suite, application layer protocol.

MVRCA, PPP Magnalink Variable Resource Compression Algorithm.
PPP protocol suite, compression protocol.

MZAP, Multicast-Scope Zone Announcement Protocol.
TCP/IP protocol suite, application layer protocol.


N

NACP, Network Access Control Protocol.
TCP/IP protocol suite, application layer protocol.

NARP, NBMA Address Resolution Protocol.
TCP/IP protocol suite, transport layer protocol.

NAS, Netnews Administration System.
TCP/IP protocol suite, application layer protocol.

NAT-PMP, NAT Port Mapping Protocol.
TCP/IP protocol suite, application layer protocol.
UDP (5351).

NBFCP, PPP NetBIOS Frames Control Protocol.
PPP protocol suite, network control protocol.

NBP, Name Binding Protocol.
AppleTalk protocol suite. (RFC 1742) NBP is a transport level protocol that is used to convert human readable service names into the numeric AppleTalk network addresses needed for communicating across the AppleTalk network.

NCP, NetWare Core Protocol.
Novell NetWare protocol suite, application, presentation and session layer protocol.

NDMP, Network Data Management Protocol.
TCP/IP protocol suite, application layer protocol.

NDP, Network Discovery Protocol.
UDP (TBD).

NECP, Network Element Control Protocol.

NetBEUI.

NetBIOS.

NETBLT, Network Block Transfer.
TCP/IP protocol suite, transport layer protocol.

NETCONF, Network Configuration Protocol.
TCP/IP protocol suite, application layer protocol.

NetFlow.
TCP/IP protocol suite, application layer protocol.

NETRJS.
Application layer remote job submission protocol.

NFILE.
TCP/IP protocol suite, application layer protocol.

NFS, Network File System.
TCP/IP protocol suite, application layer file transfer protocol.

NHDP, MANET Neighborhood Discovery Protocol.

NHRP, Next Hop Resolution Protocol.

NIP, Network Information Protocol.

NLSP, NetWare Link State Protocol.

NLSP, Network Layer Security Protocol.

NNTP, Network News Transfer Protocol.
TCP/IP protocol suite, application layer news protocol.

NORM, Negative-acknowledgment (NACK)-Oriented Reliable Multicast.

NOTASIP, Nothing Other Than A Simple Internet Phone.
TCP/IP protocol suite, application layer news protocol.
TBD (UDP).

NSLP, NAT/Firewall NSIS Signaling Layer Protocol.
TCP/IP protocol suite, application layer time protocol.

NSP, Node-Switch Protocol.

NTP, Network Time Protocol.
TCP/IP protocol suite, application layer time protocol.

NVP, Network Voice Protocol.
TCP/IP protocol suite, transport layer protocol.


O

OAKLEY.

OCSP, Online Certificate Status Protocol.
TCP/IP protocol suite, application layer protocol.

ODETTE-FTP, ODETTE File Transfer Protocol.
TCP/IP protocol suite, application layer file transfer protocol.

OLSR, Optimized Link State Routing.
TCP/IP protocol suite, application layer protocol.

OSINLCP, PPP OSI Network Layer Control Protocol.
PPP protocol suite, network control protocol.

OSPF, Open Shortest Path First Routing Protocol.
TCP/IP protocol suite, transport layer interior link-state routing protocol.

OWAMP, One-way Active Measurement Protocol.
TCP/IP protocol suite, application layer protocol.
861 (TCP).


P

PANA, Protocol for Carrying Authentication for Network Access.
TCP/IP protocol suite, application layer protocol.

PAP, PPP Password Authentication Protocol.
PPP protocol suite, link control protocol.

PAP, Printer Access Protocol.
AppleTalk protocol suite. (RFC 1742) PAP is a session level protocol that enables communications between workstations and print servers.

PCEP, Path Computation Element Communication Protocol.
TCP/IP protocol suite, application layer protocol.

PCP, Port Control Protocol.
TCP/IP protocol suite, application layer protocol.

PCT, Private Communications Technology.
Proprietary Microsoft protocol.

PEP, Packet Exchange Protocol.

PERM, Protected Entertainment Rights Management.
TCP/IP protocol suite, application layer protocol.
TBD (UDP).

PGM, Pragmatic General Multicast.
TCP/IP protocol suite, transport layer protocol.

Ph.
TCP/IP protocol suite, application layer protocol.

Photuris.
TCP/IP protocol suite, application layer session-key management protocol.

PIC, Pre-IKE Credential Provisioning Protocol.

PIM, Protocol Independent Multicast.
TCP/IP protocol suite, transport layer multicast routing protocol.

PIP.

PNA, Progressive Networks Audio.
Proprietary RealNetworks protocol.

PNNI, Private Network to Network Interface.
A trunking protocol between ATM switches.

PNP.

POP, Post Office Protocol.
TCP/IP protocol suite, application layer email access protocol.

Portmapper.
TCP/IP protocol suite, application layer protocol.

PPP, Point-to-Point Protocol.
PPP protocol suite, link layer protocol.

PPP-LEX, PPP LAN extension protocol.
PPP protocol suite, network control protocol.

PPPoE, PPP Over Ethernet.
Network layer protocol.

PPTP, Point-to-Point Tunneling Protocol.
TCP/IP protocol suite, application layer tunneling protocol.

Prospero.
TCP/IP protocol suite, application layer protocol.

PTP, Performance Transparency Protocol.
TCP/IP protocol suite, transport layer protocol.

PUP, PARC Universal Protocol.

PWDGEN, Password Generator Protocol.
TCP/IP protocol suite, application layer protocol.


Q

Q.2931.
ATM protocol suite, signalling protocol.

Quick Queues Protocol, QQP.
TCP/IP protocol suite, application layer protocol.
26, 27 (TCP).

QSIG.
A signalling protocol for creating, modifying, and terminating circuit-switched calls within Private Integrated Services Networks.

[RFC 4497] Interworking between the Session Initiation Protocol (SIP) and QSIG.

QTP, Quick Transaction Protocol.
TCP/IP protocol suite, application layer protocol.

Quote, Quote of the Day Protocol.
TCP/IP protocol suite, application layer protocol.


R

RADIUS, Remote Authentication Dial-In User Service.
TCP/IP protocol suite, application layer protocol.

RAMP, Reliable Adaptive Multicast Protocol.

RAP, Internet Route Access Protocol.
TCP/IP protocol suite, application layer protocol.

RAQMON, Real-time Application Quality-of-Service Monitoring.
TCP/IP protocol suite, application layer protocol.

RARP, Reverse Address Resolution Protocol.
TCP/IP protocol suite, network layer address resolution protocol.

RATP, Reliable Asynchronous Transfer Protocol.

RDMAP, Remote Direct Memory Access Protocol.
TCP/IP protocol suite, application layer protocol.

RDP, Reliable Data Protocol.
TCP/IP protocol suite, transport layer protocol.

RDP, Remote Desktop Protocol.

RFB, Remote Framebuffer Protocol.
TCP/IP protocol suite, application layer protocol.
5900 (TCP).

RGMP, Router-port Group Management Protocol.
TCP/IP protocol suite, transport layer protocol.

RID, Real-time Inter-network Defense.
TCP/IP protocol suite, application layer protocol.

RIP, Routing Information Protocol.
IPX protocol suite.

RIP, Routing Information Protocol.
TCP/IP protocol suite, application layer interior gateway protocol, distance vector.

RIP, Routing Information Protocol.
XNS protocol suite.

RIPng.
TCP/IP protocol suite, application layer interior gateway protocol, distance vector.

Rlogin.
TCP/IP protocol suite, application layer protocol.

RLP, Resource Location Protocol.
TCP/IP protocol suite, application layer protocol.

RMCP, Remote Mail Checking Protocol.
TCP/IP protocol suite, application layer protocol.

RMTP, Reliable Multicast Transport Protocol.

RMR, Remote Multicast Replication Protocol.
TCP/IP protocol suite, application layer protocol.
TBD (UDP).

ROHC, RObust Header Compression.
TCP/IP protocol suite, transport layer header compression protocol.

RPC, Open Network Computing Remote Procedure Call protocol.
TCP/IP protocol suite, application layer remote procedure call protocol.

RPL, Remote Program Load.

RRP, NSI Registry Registrar Protocol.
TCP/IP protocol suite, application layer protocol.

RSIP, Realm Specific IP.
TCP/IP protocol suite, application layer protocol.

RSTP, IEEE 802.1w Rapid Spanning Tree Protocol.

RSUP, Reliable SAP Update Protocol.

RSVP, Resource ReSerVation Protocol.
TCP/IP protocol suite, transport layer quality of service signaling protocol.

rsync.
TCP/IP protocol suite, application layer protocol.

RTCP, RTP Control Protocol.
TCP/IP protocol suite, application layer protocol.

RTMP, Routing Table Maintenance Protocol.
AppleTalk protocol suite.
(RFC 1742) RTMP is used by AppleTalk routers to create and maintain the routing tables that dictate the process of forwarding datagrams on the AppleTalk internet.

RTP, Real-Time Transport Protocol.
TCP/IP protocol suite, application layer protocol.

RTSP, Real Time Streaming Protocol.
TCP/IP protocol suite, application layer protocol.

RVP, RendezVous Protocol.

RWhois, Referral Whois Protocol.
TCP/IP protocol suite, application layer directory access protocol.

RWP, Remote Write Protocol.
TCP/IP protocol suite, application layer protocol.


S

SACRED, Securely Available Credentials.
TCP/IP protocol suite, application layer protocol.

SADP, Scoped Address Discovery Protocol.
TCP/IP protocol suite, application layer protocol.
TBD (UDP).

SAP, Service Advertising Protocol.
IPX protocol suite.

SAP, Session Announcement Protocol.
TCP/IP protocol suite, application layer protocol.

Saratoga.
TCP/IP protocol suite, application layer file transfer protocol.

SASL, Simple Authentication and Security Layer.
TCP/IP protocol suite, application layer protocol.

SASP, Server/Application State Protocol.
TCP/IP protocol suite, application layer protocol.

SATNET.

SAToP, Structure-Agnostic Time Division Multiplexing (TDM) over Packet.

SCCP, Skinny Call Control Protocol.
TCP/IP protocol suite, application layer protocol.

SCEP, Simple Certificate Enrollment Protocol.
TCP/IP protocol suite, application layer protocol.
HTTP as transport.

SCSI, Small Computer System Interface.
Physical and data link layer protocol.

SCSP, Server Cache Synchronization Protocol.

SCTP, Simple Computer Telephony Protocol.

SCTP, Stream Control Transmission Protocol.
TCP/IP protocol suite, transport layer protocol.

SCVP, Simple Certificate Validation Protocol.
TCP/IP protocol suite, application layer protocol.
HTTP as transport.

SDCP, PPP Serial Data Control Protocol.
PPP protocol suite, network control protocol.

SDLC.

SDP, Sockets Direct Protocol.

SDRP, Source Demand Routing Protocol.
TCP/IP protocol suite, transport layer protocol.

SDTP, PPP Serial Data Transport Protocol.
PPP protocol suite, network layer protocol.

SEND, SEcure Neighbor Discovery.
TCP/IP protocol suite, transport layer control protocol.

Send, Message Send Protocol.
TCP/IP protocol suite, application layer protocol.

SeNAA, Secure Network Access Authentication.
UDP (TBD).

SET, Secure Electronic Transaction.
Designed for credit card transactions.

SFTP, Simple File Transfer Protocol.
TCP/IP protocol suite, application layer file transfer protocol.

SGCP, Simple Gateway Control Protocol.

SGMP, Simple Gateway Monitoring Protocol.
TCP/IP protocol suite, application layer protocol.

Shim6, Level 3 Multihoming Shim Protocol for IPv6.
TCP/IP protocol suite, transport layer protocol.

Shipworm.
A protocol for tunneling IPv6 over UDP through NATs.
TBD (UDP).

SICAP, Shared-segment Interdomain Control Aggregation Protocol.

SIFT/UFT, Sender-Initiated/Unsolicited File Transfer.
TCP/IP protocol suite, application layer file transfer protocol.

SILC, Secure Internet Live Conferencing.
TCP/IP protocol suite, application layer protocol.

SIMCO, Simple Middlebox Configuration.
TCP/IP protocol suite, application layer protocol.

SIP, Session Initiation Protocol.
TCP/IP protocol suite, application layer protocol.

SIPP, Simple Internet Protocol Plus.

SIQ, Server Index Query.
TCP/IP protocol suite, application layer protocol.

SixXS Heartbeat Protocol.
TCP/IP protocol suite, application layer protocol.
3740 (UDP).

SKIP, Simple Key management for Internet Protocol.
TCP/IP protocol suite, transport layer protocol.

SLAPP, Secure Light Access Point Protocol.
TCP/IP protocol suite, application layer protocol.

SLIP, Serial Line over IP.

SLP, Service Location Protocol.
TCP/IP protocol suite, application layer protocol.

SLRRP, Simple Lightweight RFID Reader Protocol.

SMB, Server Message Block.

SMPP, Short Message Peer-to-Peer Protocol.
Developed by Logica Aldiscon to deliver email and voicemail between wired and wireless networks.

SMQP, Simple Message Queue Protocol.
TCP/IP protocol suite, application layer protocol.
720 (TCP).

SMRP, Simple Multicast Routing Protocol.
AppleTalk protocol suite.

SMTP, Simple Mail Transfer Protocol.
TCP/IP protocol suite, application layer message transfer protocol.

SMUX.
TCP/IP protocol suite, application layer protocol.

SMX, Script MIB Extensibility Protocol.

SNA/IP.

SNACP, PPP SNA Control Protocol.

SNMP, Simple Network Management Protocol.
TCP/IP protocol suite, application layer protocol.

SNMP DPI, SNMP Distributed Protocol Interface.

SNPP, Simple Network Paging Protocol.

SNQP, Simple Nomenclator Query Protocol.

SNTP, Simple Network Time Protocol.
TCP/IP protocol suite, application layer time protocol.

SOAP, Simple Object Access Protocol.
TCP/IP protocol suite, application layer protocol.

SOCKS.
TCP/IP protocol suite, application layer protocol.

SP3, Security Protocol 3.

SPAP, Shiva Password Authentication Protocol.

SPP, Sequence Packet Protocol.

SPTP, Simple Partition Transfer Protocol.

SPX, Sequenced Packet Exchange.

SPX2.

SRMP, Selectively Reliable Multicast Protocol.

SRP, Spatial Reuse Protocol.
MAC layer protocol.

SRTCP, Secure RTCP.
TCP/IP protocol suite, application layer protocol.

SRTP, Secure Real-time Transport Protocol.
TCP/IP protocol suite, application layer protocol.

SS7, Signaling System #7.
Protocol suite.

SSDP, Simple Service Discovery Protocol.
TCP/IP protocol suite, application layer protocol.

SSH, Secure Shell.
TCP/IP protocol suite, application layer protocol.

SSL, Secure Sockets Layer.

SSLRP, Secure and Scalable Location Routing Protocol.

SSP, Switch-to-Switch Protocol.

SSP.

[RFC 2174] A MAPOS version 1 Extension - Switch-Switch Protocol.

SSRP, Simple Server Redundancy Protocol.

SSTP, Service Support Transfer Protocol.

ST, Internet Stream Protocol.
TCP/IP protocol suite, transport layer protocol.

STATSRV, Statistics Server.
TCP/IP protocol suite, application layer protocol.

STEP, Secure Tunnel Establishment Protocol.
www.compatible.com.

STP, spanning tree protocol.

STUN, Simple Traversal of UDP Through NAT.
TCP/IP protocol suite, application layer protocol.

SUA, Signalling Connection Control Part User Adaptation Layer.
TCP/IP protocol suite, application layer protocol.

SUPDUP.
Application layer terminal display protocol.

Syslog.
TCP/IP protocol suite, application layer protocol.

SYSTAT.
TCP/IP protocol suite, application layer active users list protocol.


T

TACACS.
TCP/IP protocol suite, application layer protocol.

TACACS+.
TCP/IP protocol suite, application layer protocol.

Talk.

TBRPF, Topology Broadcast based on Reverse-Path Forwarding.
TCP/IP protocol suite, application layer link-state routing protocol.

TCP, Transmission Control Protocol.
TCP/IP protocol suite, transport layer connection oriented byte stream protocol.

TCP/IPX.

TCPMUX, TCP Port Service Multiplexer.
TCP/IP protocol suite, application layer protocol.

TDMoIP, TDM Over IP.
TCP/IP protocol suite, application layer protocol.

TDP, Tag Distribution Protocol.
TCP/IP protocol suite, application layer protocol.

Telnet.
TCP/IP protocol suite, application layer terminal protocol.

Teredo.
TCP/IP protocol suite, application layer protocol.

TESLA, Timed Efficient Stream Loss-Tolerant Authentication.

TFTP, Trivial File Transfer Protocol.
TCP/IP protocol suite, application layer file transfer protocol.

THTP, Trivial Hypertext Transfer Protocol.
TCP/IP protocol suite, application layer file transfer protocol.
80 (UDP).

Time, Time Protocol.
TCP/IP protocol suite, application layer time protocol.

TIP, Transaction Internet Protocol.
TCP/IP protocol suite, application layer two-phase commit protocol.

TIPC, Transparent Inter Process Communication Protocol.
Ethertype 0x88CA.

TLAP, TokenTalk Link Access Protocol.

TLS, Transport Layer Security.
TCP/IP protocol suite, application layer protocol.

TLSP, TRILL Link State Protocol.
PPP protocol suite.

TMP, TIP Multiplexing Protocol.

TMux, Transport Multiplexing Protocol.
TCP/IP protocol suite, transport layer protocol.

TNCP, TRILL Network Control Protocol.
PPP protocol suite.

TNP, TRILL Network Protocol.
PPP protocol suite.

TNVIP.

TP/IX.

TP, Transport Protocol,ISO 8073.
OSI protocol suite, transport layer protocol.

TP0.
OSI protocol suite. TP class 0.

TP1.
OSI protocol suite. TP class 1.

TP2.
OSI protocol suite. TP class 2.

TP3.
OSI protocol suite. TP class 3.

TP4.
OSI protocol suite. TP class 4.

TRAM, Tree-based Reliable Multicast.
Port 4567.

TRILL

TRIP, Telephone Routing over IP.
TCP/IP protocol suite, application layer protocol.

TSP, Time Stamp Protocol.
TCP/IP protocol suite, application layer protocol.

TSP, Tunnel Setup Protocol.
TCP/IP protocol suite, application layer protocol.
3653 (TCP, UDP).

TUNNEL.
TCP/IP protocol suite, application layer protocol.

TURN, Traversal Using Relay NAT.
TCP/IP protocol suite, application layer protocol.

TWAMP, Two-Way Active Measurement Protocol.
TCP/IP protocol suite, application layer protocol.

TZSP, Tazmen Sniffer Protocol.
TCP/IP protocol suite, application layer protocol.
37008 (UDP).


U

UDLD, UniDirectional Link Detection.
Cisco proprietary data link layer protocol.

UDP, User Datagram Protocol.
TCP/IP protocol suite, transport layer datagram protocol.

UDP-Lite, Lightweight User Datagram Protocol.
TCP/IP protocol suite, transport layer protocol.

UIAP, Unique Identifier Allocation Protocol.
TCP/IP protocol suite, application layer protocol.

ULE, Unidirectional Lightweight Encapsulation.

UMSP, Unified Memory Space Protocol.
TCP/IP protocol suite, application layer protocol.

UMTP, UDP Multicast Tunneling Protocol.

UPIP, User Profile Information Protocol.
TBD (TCP).

USERS, Active Users Protocol.

USP, Unified Stream Protocol.

USP, Universal Service Protocol.
TCP (TBD).

UUCP, Unix To Unix Copy.
TCP/IP protocol suite, application layer protocol.


V

V5UA, V5.2-User Adaptation.
TCP/IP protocol suite, application layer protocol.

VEMMI, VErsatile MultiMedia Interface.
TCP/IP protocol suite, application layer protocol.

VFDP, Versitile File Delivery Protocol.
variable (UDP).

VFRP, VINES Fragmentation Protocol.

VICP, Versatile Instrument Control Protocol.
TCP/IP protocol suite, application layer protocol.
1861 ().

VICP, VINES Internet Control Protocol.

VIP, VINES Internet Protocol.

VIPC, VINES Interprocess Communication Protocol.

VLSP, Virtual LAN Link State Protocol.
Cabletron.

VMTP, Versatile Message Transaction Protocol.

VNS, Virtual Network Switching.

VRRP, Virtual Router Redundancy Protocol.
TCP/IP protocol suite, transport layer election protocol.

VSAP, Vendor-Specific Authentication Protocol.
PPP protocol suite, link control protocol.

VSNCP, Vendor-Specific Network Control Protocol.
PPP protocol suite, network control protocol.

VSP, Vendor-Specific Protocol.
PPP protocol suite.

VSPP, VINES Sequenced Packet Protocol.

VTP, Virtual Trunking Protocol.


W

WAIS, Wide Area Information Server.

WAP, Wireless Applications Protocol.

WCCP, Web Cache Control Protocol.
Cisco.

WebDAV, Web Distributed Authoring and Versioning.
TCP/IP protocol suite, application layer protocol.

WebNFS.
TCP/IP protocol suite, application layer protocol.

Whois.
TCP/IP protocol suite, application layer directory access protocol.

Whois++.
TCP/IP protocol suite, application layer protocol.

WiCoP, Wireless LAN Control Protocol.

WIMP, Weak Identifier Multihoming Protocol.
TCP/IP protocol suite, transport layer protocol.
TBD (IP protocol).

WINS, Windows Internet Name Service.


X

X Window.
TCP/IP protocol suite, application layer protocol.

X.25.

X.500.

xAP, eXtensible Automation Protocol.
TCP/IP protocol suite, application layer protocol.

Xcast, Explicit Multi-unicast.
TCP/IP protocol suite, transport layer protocol.

XCP, Explicit Control Protocol.
TCP/IP protocol suite, transport layer protocol.

XMPP, eXtensible Messaging and Presence Protocol.
TCP/IP protocol suite, application layer protocol.

XNET, Cross Net Debugger.

XNSCP, PPP XNS IDP Control Protocol.
PPP protocol suite, network control protocol.

XOT, X.25 over TCP.
TCP/IP protocol suite, application layer protocol.

XPC, XML Pipelining with Chunks.
TCP/IP protocol suite, application layer protocol.
713 (TCP).

XSLP, eXtensible Service Location Protocol.
TCP/IP protocol suite, application layer protocol.
727 (SCTP, TCP, UDP).

XSRP, eXtensible Service Registration Protocol.
TCP/IP protocol suite, application layer protocol.
721 (SCTP, TCP, UDP).

XSSP, eXtensible Service Subscription Protocol.
TCP/IP protocol suite, application layer protocol.
725 (SCTP, TCP, UDP).

XSTP, eXtensible Service Transfer Protocol.
TCP/IP protocol suite, application layer protocol.
723 (SCTP, TCP, UDP).

XTP, Xpress Transfer Protocol.
TCP/IP protocol suite, transport layer protocol.


Y

YAAP, Yet Another Authentication Protocol.
Authentication protocol. Microsoft Corporation.

YESSIR, YEt another Sender Session Internet Reservations.


Z

ZIP, Zone Information Protocol.
AppleTalk protocol suite.
(RFC 1742) ZIP is used to maintain a mapping between networks and zone names to facilitate the name lookup process performed by the Name Binding Protocol.

ZMAAP, Zeroconf Multicast Address Allocation Protocol.
TCP/IP protocol suite, application layer protocol.
TBD (UDP).

Z39.50.
TCP/IP protocol suite, application layer protocol.


RFCs:

[RFC 4101] Writing Protocol Models.

[RFC 5218] What Makes for a Successful Protocol?

[RFC 5704] Uncoordinated Protocol Development Considered Harmful.

[RFC 6709] Design Considerations for Protocol Extensions.


Publications:


Obsolete RFCs:


Description Glossary RFCs Publications Obsolete RFCs