TCP/IP four-tier model
The TCP/IP model is a stripped-down version of the OSI reference model and consists of the following four layers:
- The application layer
- The transport layer
- The network layer
- The link layer
Don’t confuse the TCP/IP model with the TCP/IP protocol family
Protocols related to streaming media are in red
- Application layer protocol BGP DHCP DNS FTP HTTP HTTPS IMAP LDAP MGCP MQTT NNTP NTP POP ONC/RPC RTP RTSP RIP SIP SMTP SNMP SSH Telnet TLS/SSL XMPP
- Transport layer protocol TCP UDP DCCP SCTP RSVP
- Network Layer Protocol IP IPv4 IPv6 ICMP ICMPv6 ECN IGMP IPsec
- Connection layer protocol
ARP NDP OSPF Tunnels L2TP PPP MAC Ethernet Wi-Fi DSL ISDN FDDI
Default port of the application layer protocol
| Application layer protocol | Transfer protocol | The port number |
|---|---|---|
| HTTP | TCP | 80 |
| HTTPS | TCP | 443 |
| FTP (control) | TCP | 21 |
| FTP (data) | TCP | 20 |
| SSH | TCP | 22 |
| Telnet | TCP | 23 |
| DNS | TCP, UDP | 53 |
| SMTP | TCP | 25 |
| TFTP | UDP | 69 |
| RTSP | TCP,UDP | 554 |
| SIP | TCP,UDP | 5060 (TLS) 5061 (TLS) |
Understanding of Specific Agreement
- Understand Real Time Streaming Protocol (RTSP)
WEB：www.liveqing.com