TCP/IP,
Transmission
Control
Protocol/
Internet
Protocol,
is a suite of communications protocols used to interconnect network devices
on the Internet. TCP/IP implements layers of protocol stacks, and each layer
provides a well-defined network services to the upper layer protocol. TCP and
IP are the two protocols used by TCP/IP, as well as the (higher) application,
(lower) data link and (lower) physical layer protocols.
|
|
| Layer |
Protocols |
|
|
| 5. Application |
DNS, FTP, HTTP, IMAP, POP3, SMTP, SSH, Telnet, SSL, ... |
|
|
| 4. Transport |
TCP, UDP, ... |
|
|
| 3. Network |
IP (IPv4, IPv6), ICMP, ARP, ... |
|
|
| 2. Data Link |
802.3 (Ethernet), 802.11 (Wi-Fi), PPP, ... |
|
|
| 1. Physical |
Ethernet (NIC), Wireless (NIC), Cat 5/RJ-45, ... |
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