TCP/IP Family Protocol Information

AH ATMP ARP/RARP BGMP BGP-4 COPS DCAP DHCP Diameter DIS DNS DVMRP EGP EIGRP ESP FANP Finger FTP HSRP HTTP ICMP/ICMPv6 IGMP IGRP IMAP4 IMPPpre/IMPPmes IPDC IP IPv6 IRC ISAKMP ISAKMP/IKE iSCSI ISTP ISP LDAP L2F L2TP MARS Mobile IP MZAP NARP NetBIOS/IP NHRP NTP OSPF PIM POP3 PPTP Radius RLOGIN RIP2 RIPng for IPv6 RSVP RTSP RUDP SCTP S-HTTP SLP SMTP SNMP SOCKS TACACS+ TALI TCP TELNET TFTP TLS TRIP UDP Van Jacobson VRRP WCCP X-Window XOT

SOURCE; http://www.protocols.com