Articles
Your network, explained.
Plain answers to the questions people ask about Wi-Fi, devices and security — each with the way to check it on your own network.
- Which ports are open on my network? How to check, and which ones to close What an open port is, how to see which ones your router, printer, NAS and PCs expose, which ones are risky on a home or small-office network — and how to close them.
- Who is on my Wi-Fi? How to find unknown devices on your network How to list every device connected to your Wi-Fi, work out what each one is, spot the ones that should not be there — and what to do when you find one.
- How to choose the best Wi-Fi channel (2.4, 5 and 6 GHz) Why your Wi-Fi slows down when the neighbours' networks share its channel, which channels never overlap, and how to measure your own air before you change anything on the router.