https://mford.io/tags/security/ Recent content in Security on Home https://mford.io/papermod-cover.png https://mford.io/papermod-cover.png Hugo -- 0.147.2 en Fri, 31 Jul 2026 00:00:00 +0000 https://mford.io/posts/guest-vlan-isolated-except-the-router/ Fri, 31 Jul 2026 00:00:00 +0000 https://mford.io/posts/guest-vlan-isolated-except-the-router/ With firewall rules finally on the box, I went back to the guest VLAN I’d set out to build. I isolated it cleanly from every other subnet, tested it, and shipped it. Then I realized guests could still walk right up to the router’s own admin page. The same blind spot from last time, pointed inward. https://mford.io/posts/router-with-no-firewall/ Fri, 31 Jul 2026 00:00:00 +0000 https://mford.io/posts/router-with-no-firewall/ I sat down to do a routine bit of network segmentation and instead found my router had been sitting on a public IP with SSH and its admin GUI open to the internet, no firewall rules at all. A lesson in the difference between ‘working’ and ‘secure.’