https://aperturezone.com/tags/rj45/ Recent content in RJ45 on Aperture Zone https://aperturezone.com/logo.webp https://aperturezone.com/logo.webp Hugo -- gohugo.io fr-fr Sun, 12 Jul 2026 00:00:00 +0000 https://aperturezone.com/posts/rj45/ Sun, 12 Jul 2026 00:00:00 +0000 https://aperturezone.com/posts/rj45/ <p>This article is in response to a request from <strong>@Menvé</strong>, a site member and cybersecurity instructor: his students were looking for a clear and comprehensive guide on the RJ45. Because we often forget—especially when we’re just starting out in cybersecurity—but it all starts here: the <strong>physical layer</strong> is the foundation on which everything else rests. It’s hard to understand segmentation, VLANs, or 802.1X without knowing what’s actually traveling through the cables. For segmentation and VLANs, you can also check out @SilenS’s excellent articlehttps://aperturezone.fr/posts/cisco-firewall-final/</p>