A dive into the seven-layer Open Systems Interconnection (OSI) model. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The OSI model is a product ...

“The software layer we call the ‘red diamond’—that’s how it’s illustrated in diagrams showing its position in the OSI stack.” The result is a deny-by-default security model that inherently resists man ...

Networking author Howard C. Berkowitz provides tips on avoiding and fixing data link network failures in Part 3 of his series.