IP, Internet Protocol, (RFC-791) 網際協議

ICMP, Internet Control Message Protocol, (RFC-792) 網際報文控制協議

IGMP, Internet Group Multicast Protocol, (RFC-1112) 網際成組多路廣播協議

UDP, User Datagram Protocol, (RFC-768) 用戶數據報協議

TCP, Transmission Control Protocol, (RFC-793) 傳輸控制協議

TELNET, Telnet Protocol, (RFC-854,855) Telnet協議

FTP, File Transfer Protocol, (RFC-959) 文件傳輸協議, 計算機網絡上主機之間傳送文件的一種服務協議。

SMTP, Simple Mail Transfer Protocol, (RFC-821) 簡單郵件傳輸協議

SMTP-SIZE, SMTP Service Ext for Message Size, (RFC-1870) 可處理大信包的擴充的SMTP協議

SMTP-EXT, SMTP Service Extensions, (RFC-1869) SMTP協議擴充

NTPV2, Network Time Protocol (Version 2), (RFC-1119) 網絡時間協議版本2

SNMP, Simple Network Management Protocol, (RFC-1157) 簡單網絡管理協議

NETBIOS, NetBIOS Services Protocols, (RFC-1001,1002) NetBIOS服務協議

ECHO, Echo Protocol 應答協議

DISCARD, Discard Protocol 取消協議

CHARGEN, Character Generator Protocol 字符發生器協議

QUOTE, Quote of the Day Protocol 氣象報告協議

USERS, Active Users Protocol 當前用戶報告協議

DAYTIME, Daytime Protocol 日期查詢協議

TIME, Time Server Protocol 標準時間服務器協議

TFTP, Trivial File Transfer Protocol 測試用的文件傳輸協議

TP-TCP, ISO Transport Service on top of the TCP 基于TCP的ISO傳輸層服務

ETHER-MIB, Ether-MIB 以太網管理信息庫

PPP, Point-to-Point Protocol 點對點協議

PPP-HDLC, PPP in HDLC Framing HDLC分組的PPP協議

IP-SMDS, IP Datagram over the SMDS Service 基于SMDS服務的IP數據報

RIP, Routing Information Protocol 路由信息協議

ARP, Address Resolution Protocol, (RFC-826) 地址解析協議

RARP, A Reverse Address Resolution Protocol, (RFC-903) 逆向地址解析協議

POP3, Post Office Protocol, Version 3, (RFC-1725) 電子郵局協議,版本3

HTTP, Hyper Text Transfer Protocol 超文本傳輸協議

RPC, Remote Procedure Call Protocol, (RFC-1831) 遠過程調用協議

NICNAME, WhoIs Protocol, (RFC-954) WhoIs協議

DHCP, Dynamic Host Configuration Protocol, (RFC-1541) 主機動態配置協議

NNTP, Network News Transfer Protocol, (RFC-977) 網絡新聞傳輸協議

IARP, Inverse Address Resolution Protocol, (RFC-1293) 反向地址解析協議

RAP, Internet Route Access Protocol, (RFC-1476) 網際路由存取協議

IRCP, Internet Relay Chat Protocol, (RFC-1459) 網際轉發的閑聊協議

RMCP, Remote Mail Checking Protocol, (RFC-1339) 遠程郵件檢查協議

MTP, Multicast Transport Protocol, (RFC-1301) 多路廣播傳輸協議

GOPHER, The Internet Gopher Protocol, (RFC-1436) 網際Gopher協議

LISTSERV, Listserv Distribute Protocol, (RFC-1429) Listserv分布協議