Practical, no-nonsense guides to understanding and securing your network — written for people who want to actually fix things, not just read about them.
What open ports are, which ones attackers target first, and exactly how to scan and close them on your own network.
Read guide →A reliable way to answer "who else is on my network" — and what to do if the answer isn't what you expected.
Read guide →What these four vulnerability-data systems mean, how they relate, and why severity alone shouldn't decide what you patch first.
Read guide →An ordered, practical checklist — from device inventory to patching to ongoing monitoring.
Read guide →What actually separates a legitimate security test from a crime, and how to practice safely and legally.
Read guide →Why a live-generated network map beats a hand-drawn diagram, and what to look for once you have one.
Read guide →LANsentry discovers every device on your network, scans for open ports and vulnerabilities, maps your topology, and alerts you the moment something changes.