Core Networking Protocols: TCP/IP, UDP, and Beyond
Core Networking Protocols: TCP/IP, UDP, and Beyond The Internet runs on a family of rules called protocols. The most important one is TCP/IP. TCP handles reliable delivery, while IP does the actual addressing and routing. Together, they let data move from your computer to a server across the world. Understanding TCP/IP TCP is a connection oriented protocol. It creates a path between two devices, checks that data arrives, and can resend lost packets. It also sorts packets so they arrive in the right order and manages how fast data travels to avoid congestion. IP focuses on locating devices: IP addresses and ports tell data where to go and how to reach the right application. A common idea is the 4-tuple: source and destination IP addresses plus source and destination ports. This toolbox underpins email, web pages, and many apps, in IPv4 and the newer IPv6. ...