アプリケーション層
IMAP, IMAP4, Internet Message Access Protocol (version 4)
IRCP, Internet Relay Chat Protocol
LDAP, Lightweight Directory Access Protocol
LPD, Line Printer Daemon Protocol
MIME (S/MIME), Multipurpose Internet Mail ExtensionsとSecure MIME
Modbus
NETCONF
NFS, Network File System
NIS, Network Information Service
NNTP, Network News Transfer Protocol
NTCIP, National Transportation Communications for Intelligent Transportation System Protocol
NTP, Network Time Protocol
OSCAR, AOL Instant Messenger Protocol
PNRP, Peer Name Resolution Protocol
POP, POP3, Post Office Protocol (version 3)
Rlogin, Remote Login in UNIX Systems
RTPS, Real Time Publish Subscribe
RTSP, Real Time Streaming Protocol
SAP, Session Announcement Protocol