| IP, Internet Protocol, (RFC-791) | 网际协议 |
| ICMP, Internet Control Message Protocol, (RFC-792) | 网际报文控制协议 |
| IGMP, Internet Group Multicast Protocol, (RFC-1112) | 网际成组多路广播协议 |
| UDP, User Datagram Protocol, (RFC-768) | 用户数据报协议 |
| TCP, Transmission Control Protocol, (RFC-793) | 传输控制协议 |
| TELNET, Telnet Protocol, (RFC-854, 855) | Telnet协议 |
| FTP, File Transfer Protocol, (RFC-959) | 文件传输协议, 计算机网络上主机之间传送文件的一种服务协议. |
| SMTP, Simple Mail Transfer Protocol, (RFC-821) | 简单邮件传输协议 |
| SMTP-SIZE, SMTP Service Ext for Message Size, (RFC-1870) | 可处理大信包的扩充的SMTP协议 |
| SMTP-EXT, SMTP Service Extensions, (RFC-1869) | SMTP协议扩充 |
| NTPV2, Network Time Protocol (Version 2), (RFC-1119) | 网络时间协议版本2 |
| SNMP, Simple Network Management Protocol, (RFC-1157) | 简单网络管理协议 |
| NETBIOS, NetBIOS Services Protocols, (RFC-1001, 1002) | NetBIOS服务协议 |
| ECHO, Echo Protocol | 应答协议 |
| DISCARD, Discard Protocol | 取消协议 |
| CHARGEN, Character Generator Protocol | 字符发生器协议 |
| QUOTE, Quote of the Day Protocol | 气象报告协议 |
| USERS, Active Users Protocol | 当前用户报告协议 |
| DAYTIME, Daytime Protocol | 日期查询协议 |
| TIME, Time Server Protocol | 标准时间服务器协议 |
| TFTP, Trivial File Transfer Protocol | 测试用的文件传输协议 |
| TP-TCP, ISO Transport Service on top of the TCP | 基于TCP的ISO传输层服务 |
| ETHER-MIB, Ether-MIB | 以太网管理信息库 |
| PPP, Point-to-Point Protocol | 点对点协议 |
| PPP-HDLC, PPP in HDLC Framing | HDLC分组的PPP协议 |
| IP-SMDS, IP Datagram over the SMDS Service | 基于SMDS服务的IP数据报 |
| RIP, Routing Information Protocol | 路由信息协议 |
| ARP, Address Resolution Protocol, (RFC-826) | 地址解析协议 |
| RARP, A Reverse Address Resolution Protocol, (RFC-903) | 逆向地址解析协议 |
| POP3, Post Office Protocol, Version 3, (RFC-1725) | 电子邮局协议,版本3 |
| HTTP, Hyper Text Transfer Protocol | 超文本传输协议 |
| RPC, Remote Procedure Call Protocol, (RFC-1831) | 远过程调用协议 |
| NICNAME, WhoIs Protocol, (RFC-954) | WhoIs协议 |
| DHCP, Dynamic Host Configuration Protocol, (RFC-1541) | 主机动态配置协议 |
| NNTP, Network News Transfer Protocol, (RFC-977) | 网络新闻传输协议 |
| IARP, Inverse Address Resolution Protocol, (RFC-1293) | 反向地址解析协议 |
| RAP, Internet Route Access Protocol, (RFC-1476) | 网际路由存取协议 |
| IRCP, Internet Relay Chat Protocol, (RFC-1459) | 网际转发的闲聊协议 |
| RMCP, Remote Mail Checking Protocol, (RFC-1339) | 远程邮件检查协议 |
| MTP, Multicast Transport Protocol, (RFC-1301) | 多路广播传输协议 |
| GOPHER, The Internet Gopher Protocol, (RFC-1436) | 网际Gopher协议 |
| LISTSERV, Listserv Distribute Protocol, (RFC-1429) | Listserv分布协议 |
