https://blanpa.github.io/tags/networking/Recent content in Networking on blanpaHugo -- gohugo.ioen© 2026 blanpaSat, 18 Jul 2026 00:00:00 +0000https://blanpa.github.io/blog/securing-ot-networks-opcua-purdue/Sat, 18 Jul 2026 00:00:00 +0000https://blanpa.github.io/blog/securing-ot-networks-opcua-purdue/<p>Every other post in this series has been about <em>connecting</em> things — <a href="https://blanpa.github.io/blog/siemens-s7-opcua-node-red/" >PLCs to dashboards</a>, <a href="https://blanpa.github.io/blog/unified-namespace-sparkplug-node-red/" >protocols to brokers</a>, <a href="https://blanpa.github.io/blog/nats-edge-to-cloud-pipeline/" >edge to cloud</a>. This one is about the uncomfortable flip side: every connection you add is also an attack surface. Industrial systems were designed in an era of physical isolation, and we&rsquo;ve spent the last decade enthusiastically networking them without always asking what that means for security. This is the post I wish more IIoT developers read <em>before</em> their first deployment, not after their first incident.</p>