Guides
Secure your home network, one practical step at a time.
Straightforward guides to finding every device on your Wi‑Fi, understanding what's exposed, and fixing it without breaking the things you rely on.
Your first scan: build a home network baseline in 10 minutes
Run your first Crios scan, name and trust the devices you recognise, and set a baseline so every later scan can tell you what's new.
Read guide →Device securityUnknown device on your Wi‑Fi? How to identify it and what to do
Crios flagged a device you don't recognise. Here's how to work out what it is, when to worry, and the steps that lock out an intruder.
Read guide →Understanding resultsOpen ports explained: which are normal at home, and which aren't
A plain-language guide to the open ports Crios finds on home devices: what's expected on phones, TVs and printers, and what deserves a closer look.
Read guide →Risk and exposureInternet vs home network: why an open port's reach matters most
How Crios asks your router which ports are forwarded from the internet, why that changes severity, and how to close forwards you didn't intend.
Read guide →Fixing issuesBefore you close a port: how not to break your own network
Closing ports improves security, but some keep file sharing, backups, printing and streaming working. Check what a port does before you turn it off.
Read guide →Smart homeSecuring smart home and IoT devices: cameras, plugs and hubs
Smart gadgets are the weakest link on most home networks. How to find risky cameras, plugs and hubs with Crios, and the practical steps that lock them down.
Read guide →Fixing issuesVerify your fix: Check Now, re-scans and Terminal port checks
Confirm a closed port stays closed: re-check a single port, re-scan a device for a before/after comparison, or test from Terminal on a Mac.
Read guide →RouterHome router security checklist: what Crios checks and what to check yourself
A practical router security checklist: what Crios detects automatically, like UPnP and forwarded ports, and which settings to review yourself.
Read guide →RoutineA 5-minute monthly home network check-up
A simple monthly routine with Crios: scan, review new devices, fix internet-facing issues first and keep your inventory tidy. Plus Mac automation.
Read guide →Get Crios
Put these guides to work on your own network.
One scan builds your device roster, scores your network and shows what's worth fixing first.