Thanks for your comments on my first EtherGeek post on understanding the OSI Model. I especially enjoyed learning new ways to remember the OSI Model; for example: Please Do Not Throw Stale Pizza Away.

Network-equipment manufacturers use lab network environments to perform scenario testing on new products, and they need to be able to reconfigure those networks quickly, accurately, and ...

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 ...

Properly speaking, Ethernet only defines the physical layer—cables, connectors and firmware that enables communication over the media—but there is also the Open Systems Interconnection (OSI) stack.

Joel is an internationally recognized expert in the areas of security, networking and messaging. Follow him on X (formerly Twitter) @joelsnyder. Networks empower people to do their jobs, to ...