TCP/IP Protocol Suite
- Transport
- Transmission Control Protocol(TCP): connection-based services
- User Datagram Protocol (UDP): connectionless services
- Routing
- Internet Protocol(IP): handles transmission of information
- Internet Control Message Protocol(ICMP): handles status message for IP
- Routing Information Protocol (RIP): determines routing
- Open Shortest Path First (OSPF): alternate protocol for determining routing
- Network Addresses
- Address Resolution Protocol (ARP): determines addresses
- Domain Name Service (DNS): determines addresses from machine names
- Reverse Address Resolution Protocol (RARP): determines addresses
- User Services
- Boot Protocol (BOOTP): starts a network machine
- File Transfer Protocol (FTP): transfers files
- Telnet: allows remote logins
- Simple Mail Transfer Protocol(SMTP): transfers electronic mail
- Post Office Protocol (POP): supports forwarding of e-mail
- Gateway Protocols
- Exterior Gateway Protocol (EGP): transfers routing information for external networks
- Gateway-to-Gateway Protocol (GGP): transfers routing information between gateways
- Interior Gateway Protocol (IGP): transfers routing information for internal networks
- Others
- Network File System (NFS): enables directories on one machine to be mounted on another
- Network Information Services (NIS): maintains user accounts across networks
- Remote Procedure Call (RPC): enables remote applications to communicate
- Simple Network Management Protocol (SNMP): sends status message about the network
