IPSec, Internet Protocol Security.
Multicast addresses.
Network layer protocols:
These protocols are assigned an
Ethertype number.
- ARP, Address Resolution Protocol.
 
- DRARP, Dynamic RARP.
 
- InARP, Inverse Address Resolution Protocol.
 
- IP, Internet Protocol.
 
- IPv6, Internet Protocol version 6.
 
- MPLS, Multi-Protocol Label Switching.
 
- PPPoE, PPP Over Ethernet.
 
- RARP, Reverse Address Resolution Protocol.
 
Transport layer protocols:
These protocols are assigned an IP protocol number.
- AH, IP Authentication Header.
 
- AX.25.
 
- CBT, Core Based Trees.
 
- DSR, Dynamic Source Routing Protocol.
 
- DVMRP, Distance Vector Multicast Routing Protocol.
 
- EGP, Exterior Gateway Protocol.
 
- ESP, Encapsulating Security Payload.
 
- GGP, Gateway to Gateway Protocol.
 
- GRE, Generic Routing Encapsulation.
 
- HMP, Host Monitoring Protocol.
 
- ICMP, Internet Control Message Protocol.
 
- ICMPv6, Internet Control Message Protocol for IPv6.
 
- IDPR, Inter-Domain Policy Routing Protocol.
 
- IFMP, Ipsilon Flow Management Protocol.
 
- IGAP, IGMP for user Authentication   Protocol.
 
- IGMP, Internet Group Management Protocol.
 
- IGRP, Interior Gateway Routing Protocol.
 
- IP in IP Encapsulation.
 
- IPPCP, IP Payload Compression Protocol.
 
- IRTP, Internet Reliable Transaction Protocol.
 
- ISO-IP.
 
- L2TP, Level 2 Tunneling Protocol.
 
- Minimal Encapsulation Protocol.
 
- MLD, Multicast Listener Discovery.
 
- Mobility Header.
 
- MOSPF, Multicast Open Shortest Path First.
 
- MTP, Multicast Transport Protocol.
 
- NARP, NBMA Address Resolution Protocol.
 
- NETBLT, Network Block Transfer.
 
- NVP, Network Voice Protocol.
 
- OSPF, Open Shortest Path First Routing Protocol.
 
- PGM, Pragmatic General Multicast.
 
- PIM, Protocol Independent Multicast.
 
- PTP, Performance Transparency Protocol.
 
- RDP, Reliable Data Protocol.
 
- RSVP, Resource ReSerVation Protocol.
 
- SCTP, Stream Control Transmission Protocol.
 
- SEND, SEcure Neighbor Discovery.
 
- SDRP, Source Demand Routing Protocol.
 
- Shim6, Level 3 Multihoming Shim Protocol for IPv6.
 
- SKIP, Simple Key management for Internet Protocol.
 
- ST, Internet Stream Protocol.
 
- TCP, Transmission Control Protocol.
 
- TMux, Transport Multiplexing Protocol.
 
- TP/IX.
 
- UDP, User Datagram Protocol.
 
- UDP-Lite, Lightweight User Datagram Protocol.
 
- VMTP, Versatile Message Transaction Protocol.
 
- VRRP, Virtual Router Redundancy Protocol.
 
Application layer protocols:
These protocols are assigned one or more SCTP, TCP or UDP
port numbers.
- ACAP, Application Configuration Access Protocol.
 
- AgentX.
 
- ANCP, Access Node Control Protocol.
 
- AODV, Ad hoc On-Demand Distance Vector.
 
- APEX, Application Exchange Core.
 
- ASAP, Aggregate Server Access Protocol.
 
- ATMP, Ascend Tunnel Management Protocol.
 
- AURP, AppleTalk Update-based Routing Protocol.
 
- Authentication Server Protocol.
 
- BFCP, Binary Floor Control Protocol.
 
- BFTP, Background File Transfer Program.
 
- BGP, Border Gateway Protocol.
 
- BOOTP, Bootstrap Protocol.
 
- CAPWAP, Control And Provisioning of Wireless Access Points.
 
- CARD, Candidate Access Router Discovery.
 
- CFDP, Coherent File Distribution Protocol.
 
- Chargen, Character Generator Protocol.
 
- CLDAP, Connection-less Lightweight X.500 Directory Access Protocol.
 
- CMP, Certificate Management Protocols.
 
- COPS, Common Open Policy Service.
 
- CRANE, Common Reliable Accounting for Network Element.
 
- CXTP, Context Transfer Protocol.
 
- Daytime, Daytime Protocol.
 
- DCAP, Data Link Switching Client Access Protocol.
 
- DHCP, Dynamic Host Configuration Protocol.
 
- DHCPv6, Dynamic Host Configuration Protocol for IPv6.
 
- DIAMETER.
 
- DICT, Dictionary Server Protocol.
 
- Discard, Discard Protocol.
 
- DIXIE.
 
- DMSP, Distributed Mail Service Protocol.
 
- DNS, Domain Name System.
 
- DRAP, Data Link Switching Remote Access Protocol.
 
- DTCP, Dynamic Tunnel Configuration Protocol.
 
- DTLS, Datagram Transport Layer Security.
 
- Echo.
 
- EMSD, Efficient Mail Submission and Delivery.
 
- ENRP, Enpoint Name Resolution Protocol.
 
- EPP, Extensible Provisioning Protocol.
 
- ESRO, Efficient Short Remote Operations.
 
- ETFTP, Enhanced Trivial File Transfer Protocol.
 
- Finger.
 - ForCES, Forwarding and Control Element Separation.
 
- FTP, File Transfer Protocol.
 
- GDOI, Group Domain of Interpretation.
 
- Gopher.
 
- HIP, Host Identity Protocol.
 
- HOSTNAME.
 
- HSRP, Hot Standby Router Protocol.
 
- HTTP, HyperText Transfer Protocol.
 
- ICAP, Internet Content Adaptation Protocol.
 
- ICP, Internet Cache Protocol.
 
- IDXP, Intrusion Detection Exchange Protocol.
 
- iFCP, Internet Fibre Channel Protocol.
 
- IKE, Internet Key Exchange.
 
- IMAP, Interactive Mail Access Protocol.
 
- IPFIX, IP Flow Information Export.
 
- IPP, Internet Printing Protocol.
 
- IRC, Internet Relay Chat.
 
- ISAKMP, Internet Security Association and Key Management Protocol.
 
- iSCSI.
 
- IUA, ISDN Q.921-User Adaptation.
 
- Kerberos.
 
- Kermit.
 
- KINK, Kerberized Internet Negotiation of Keys.
 
- L2F, Layer 2 Forwarding.
 
- L2TP, Level 2 Tunneling Protocol.
 
- LDAP, Lightweight Directory Access Protocol.
 
- LDP, Label Distribution Protocol.
 
- LDP, Loader Debugger Protocol.
 
- LFAP, Light-weight Flow Admission Protocol.
 
- LLMNR, Linklocal Multicast Name Resolution.
 
- LMTP, Local Mail Transfer Protocol.
 
- LoST, Location-to-Service Translation.
 
- LPR.
 
- LTP, Licklider Transmission Protocol.
 - LWAPP, Light Weight Access Point Protocol.
 
- MADCAP, Multicast Address Dynamic Client Allocation Protocol.
 
- MASC, Multicast Address-Set Claim.
 
- MATIP, Mapping of Airline Traffic over Internet Protocol.
 
- Mbus, Message Bus.
 
- MGCP, Multimedia Gateway Control Protocol.
 
- Mobile IP.
 
- MPLS Echo.
 
- MPP, Message Posting Protocol.
 
- MSDP, Multicast Source Discovery Protocol.
 
- MTP, Mail Transfer Protocol.
 
- MTQP, Message Tracking Query Protocol.
 
- MUPDATE, Malbox Update.
 
- NAS, Netnews Administration System.
 
- NFILE.
 
- NFS, Network File System.
 
- NNTP, Network News Transfer Protocol.
 
- NTP, Network Time Protocol.
 
- OCSP, Online Certificate Status Protocol.
 
- ODETTE-FTP, ODETTE File Transfer Protocol.
 
- OLSR, Optimized Link State Routing.
 
- PANA, Protocol for Carrying Authentication for Network Access.
 
- PCEP, Path Computation Element Communication Protocol.
 
- Ph.
 
- Photuris.
 
- POP, Post Office Protocol.
 
- Portmapper.
 
- PPTP, Point to Point Tunneling Protocol.
 
- PWDGEN, Password Generator Protocol.
 
- Quote, Quote of the Day Protocol.
 
- RADIUS, Remote Authentication Dial-In User Service.
 
- RAP, Internet Route Access Protocol.
 
- RIP, Routing Information Protocol.
 
- RIPng.
 
- Rlogin.
 
- RLP, Resource Location Protocol.
 
- RMCP, Remote Mail Checking Protocol.
 
- RSIP, Realm Specific IP.
 
- rsync.
 
- RTCP, RTP Control Protocol.
 
- RTP, Real-Time Transport Protocol. 
 
- RTSP, Real Time Streaming Protocol.
 
- RWhois, Referral Whois Protocol.
 
- SACRED, Securely Available Credentials.
 
- Saratoga.
 
- Send, Message Send Protocol.
 
- SFTP, Simple File Transfer Protocol.
 
- SGMP, Simple Gateway Monitoring Protocol.
 
- SIFT/UFT, Sender-Initiated/Unsolicited File Transfer.
 
- SIP, Session Initiation Protocol.
 - SLAPP, Secure Light Access Point Protocol.
 
- SLP, Service Location Protocol.
 
- SMTP, Simple Mail Transfer Protocol.
 
- SMUX.
 
- SNMP, Simple Network Management Protocol.
 
- SNPP, Simple Network Paging Protocol.
 
- SNTP, Simple Network Time Protocol.
 
- SOCKS.
 
- SRTCP, Secure RTCP.
 
- SRTP, Secure Real-time Transport Protocol.
 
- SSDP, Simple Service Discovery Protocol.
 
- SSP, Switch-to-Switch Protocol.
 
- STATSRV, Statistics Server.
 
- STUN, Simple Traversal of UDP Through NAT.
 
- SUA, Signalling Connection Control Part User Adaptation Layer.
 
- Syslog.
 
- SYSTAT.
 
- TACACS.
 
- TBRPF, Topology Broadcast based on Reverse-Path Forwarding.
 
- Telnet.
 
- Teredo.
 
- TFTP, Trivial File Transfer Protocol.
 
- Time, Time Protocol.
 
- TRIP, Telephone Routing over IP.
 
- TSP, Time Stamp Protocol.
 
- TUNNEL.
 
- UMSP, Unified Memory Space Protocol.
 
- UUCP.
 
- VEMMI, VErsatile MultiMedia Interface.
 
- WebDAV, Web Distributed Authoring and Versioning.
 
- Whois.
 
- Whois++.
 
- XMPP, eXtensible Messaging and Presence Protocol.
 
- Z39.50.
 
Glossary:
RFCs:
[RFC 1180]
A TCP/IP Tutorial.
Publications:
Obsolete RFCs: