Flow control
Understanding TCP Three-Way Handshake: A Comprehensive Guide
In networking, the TCP three-way handshake (often called a “TCP conversation”) establishes reliable connections, which is crucial for Access Control Lists (ACLs) to filter traffic effectively. ACLs manage inbound and outbound traffic based on IP addresses, ports, and TCP flags. This article explains TCP fundamentals before diving into ACL integration, helping CCNA students grasp transport...
The Transport Layer Explained: Process-to-Process Delivery, TCP, UDP, and Beyond
We routinely run multiple applications on a single device at once — a browser, an email client, a video call — and each needs its data delivered to the right place without interference from the others. The transport layer, Layer 4 of the OSI model, is what makes this possible: it accepts data from the...
Transmission Control Protocol (TCP) Explained
Transmission Control Protocol, TCP, is a transport-layer protocol in the OSI model. It’s what actually creates a reliable connection between two remote computers, guaranteeing that data sent from one side arrives at the other, intact and in order. When the application layer has data to send, it hands that data down to the transport layer,...