According to the OSI Model, the session layer is where connections are established, managed, and torn down. For connection-oriented network protocols, understanding how the session layer works, and ...

The data link layer is the protocol layer in a program that handles how data moves in and out of a physical link in a network. It is Layer 2 in the Open Systems Interconnection (OSI) architecture ...

My first week on the job as Director of IT Policy at Cornell University in 2001, a manager in systems, Sarah, invited me into her office. After some meet and greet, she asked me what I knew ...

The Open Systems Interconnection -- or OSI model layers -- explains the process of endpoint communication via networking, and it is divided into seven different layers based on their functionality.

Peeling back the layers of IoT devices reveals most of them are nothing more than what are already on the Internet in the form of present-day M2M devices. In just six years, according to Cisco Systems ...

As traditional cybersecurity solutions improve, they push cyberattackers toward alternative paths. Layer 1 of the OSI model (i.e., the physical layer) has become a fertile ground for attacks and, ...

Other tips in this series have examined the seven-layer OSI model from the perspective of security. Although security was not the No. 1 goal of the designers of the OSI model, the idea behind these ...

Getting started on designing a network is a task of formidable proportions, but all the more so if you are looking to build a secure IT network. Often, IT system administrators are not fully familiar ...

A network topology is the basic design of a computer network. It is very much like a road map. It details how key network components such as nodes and links are interconnected. A network's topology is ...