Table of Contents
Layer 1 protocols(physical layer)
– USB Physical layer
– Ethernet physical layer including 10 BASE T, 100 BASE T,100 BASE-TX,100 BASE FX, 1000 BASE T and other variants
– varieties of 802.11 Wi-Fi physical layers
– DSL
– ISDN
– T1 and other T-carrier links
– E1 and other E-carrier links
– Bluetooth physical layer
Layer 2 protocols(Data Link Layer )
– CDP
– CHAP (Challenge Handshake Authentication Protocol)
– Ethernet
– Frame Relay
– HDLC high-level data link control
– IEEE 802.11 Wi-Fi
– LLC (Logic Link Control)
– LACP (Link aggregation control protocol)
– LLDP (Link layer discovery protocol)
– LCP (Link Control Protocol)(part of PPP)
– MAC (Media Access Control)
– PAgP Cisco Systems proprietary link aggregation protocol
– PPP (point-to-point protocol)
– STP (spanning tree protocol)
– VTP (VLAN trunking protocol)
– VLAN (Virtual local area network)
Layer 2 or layer 3(some classify it as layer 2 and some layer 3)
– ARP (Address Resolution protocol)
– ProxyARP
– RARP (Reverse Address Resolution protocol)
Layer 3 protocols(Network Layer in OSI or Internet layer in TCP/IP)
– Anti-replay
– ATM (Asynchronous Transfer Mode)
– EIGRP (Enhanced Interior Gateway Routing Protocol)
– GRE (Generic Routing Encapsulation)
– GLBP (Gateway Load Balancing Protocol)
– HSRP (Hot Standby Router Protocol)
– Frame Relay
– RIP (Routing Information Protocol)
– RIPv2
– IGRP (Interior Gateway Routing protocol)
– ICMP (Internet Control Message Protocol)
– ICMPv6
– IGMP (Internet Group mangement Protocol)
– IPSec (Internet protocol security)
– IPv4
– IPv6
– IS-IS (Intermediate System – Intermediate system)
– MPLS (Multi-protocol label switching)
– NAT (Network Address Translation)
– OSPF (Open Shortest Path First)
– VRRP (Virtual Router Redundancy Protocol)
Layer 4 (transport layer or Host-to-Host layer)
– AH (Authentication header over IP or IPsec)
– TCP (Transmission Control Protocol)
– UDP (User Datagram Protocol)
Layer 5 (session layer or application layer in DoD)
– NetBIOS File sharing and name resolution protocol -the basis of file sharing in Windows
– NFS (Network File System)
Layer 7(application layer)
– BitTorrent A peer to peer file sharing system
– BGP (Border Gateway Protocol)
– DNS (Domain name System)
– DHCP (Dynamic Host Configuration Protocol)
– FTP (File Transfer Protocol)
– HTTP (Hypertext Transfer Protocol)
– HTTPS (Hypertext Transfer Protocol secure)
– IRC (Internet Relay Chat)
– NTP (Network Time Protocol)
– POP3 (Post Office Protocol version 3)
– RTP (Real-time Transport Protocol)
– SSH (Secure Shell)
– SMTP (Simple Mail Transfer Protocol)
– SNMP (Simple Network Management Protocol)
– Telnet Remote terminal access protocol
– TFTP (Trivial File Transfer Protocol)
– URL (Uniform Resource Locator)
Protocol Numbers
| Protocol | Number |
| ICMP | 1 |
| IGMP | 2 |
| IPv4 | 4 |
| TCP | 6 |
| EGP | 8 |
| IGP | 9 |
| RDP(Reliable Data Protocol) | 27 |
| IPv6 | 41 |
| GRE | 47 |
| ICMPv6 | 58 |
| EIGRP | 88 |
| OSPF | 89 |
| VRRP | 112 |
These protocol numbers are used in the protocol field in the IP header.
A list of Internet socket port numbers used by protocols of the Transport Layer of the Internet Protocol Suite for the establishment of host-to-host connectivity.
| Protocol | TCP | UDP | Port NO. |
| FTP data transfer | TCP | 20 | |
| FTP control | TCP | 21 | |
| FTP control | TCP | 22 | |
| Telnet | TCP | 23 | |
| SMTP | TCP | 25 | |
| DNS | TCP | UDP | 53 |
| BOOTP Server and also used by DHCP | UDP | 67 | |
| BOOTP Client and also used by DHCP | UDP | 68 | |
| TFTP | UDP | 69 | |
| HTTP | TCP | 80 | |
| POP2 | TCP | 109 | |
| POP3 | TCP | 110 | |
| NTP | TCP | 123 | |
| SNMP | UDP | 161 | |
| SNMP Trap | TCP | UDP | 162 |
| HTTPS | TCP | 443 | |
| Syslog | UDP | 514 | |
| NFS | UDP | 944 |
