Similar to Network_News_Transfer_Protocol
 - RloginBerkeley r-commands
 - Session Description ProtocolSession Description Protocol
 - Simple Authentication and Security LayerSimple Authentication and Security Layer
 - Stream Control Transmission ProtocolStream Control Transmission Protocol
 - SyslogSyslog
 - Uniform Resource IdentifierUniform Resource Identifier
 - User Datagram ProtocolUser Datagram Protocol
 - 暗号メッセージ構文Cryptographic Message Syntax
 - 近隣探索プロトコルNeighbor Discovery Protocol
 - TorTor (network)
 - パーセントエンコーディングPercent-encoding
 - CHARGENプロトコルCharacter Generator Protocol
 - Constrained Application ProtocolConstrained Application Protocol
 - DAYTIMEプロトコルDaytime Protocol
 - DHCPv6DHCPv6
 - DISCARDプロトコルDiscard Protocol
 - DNS over HTTPSDNS over HTTPS
 - ECHOプロトコルEcho Protocol
 - HTTP/2HTTP/2
 - HTTP/3HTTP/3
 - Internet Relay ChatIRC
 - MGCPMedia Gateway Control Protocol
 - Post Office ProtocolPost Office Protocol
 - Real-time Transport ProtocolReal-time Transport Protocol
 - RTP Control ProtocolRTP Control Protocol
 - Secure ShellSecure Shell
 - Session Initiation ProtocolSession Initiation Protocol
 - SMTPSimple Mail Transfer Protocol