NetSecWall Blog
What is your computer saying behind your back?
Practical, plain-language pieces on the problems a firewall that shows you everything actually solves: apps phoning home, surprise uploads, kids online, malware traffic, and a network you can finally see.
Featured · Small business & IT
Managing firewall policy across dozens of PCs without a cloud console
Group the PCs on a Management Server you host yourself, set one policy with the wizard, lock what users mustn't change, and let each PC apply it at its next check-in. No cloud console.
Why is an app on my PC talking to a Tor exit node?
Usually because something on your PC accepts connections arriving through Tor, a peer-to-peer app met a Tor user, or a program uses Tor itself. Malware does too, so check the app and direction.
How to block a country on Windows
Windows has no country switch, so you block the country's IP ranges with firewall rules. NetSecWall does it with one right-click; geolocation is approximate, and CDNs and VPNs blur borders.
Block ads and trackers on Android without root
Without root, the practical method is DNS filtering: Android's Private DNS setting pointed at a filtering provider, or an app that filters lookups through a local VPN. Neither catches every ad.
How to block adult websites on Windows 10 and 11
Use a family DNS filter on your router, a filter on the PC, or both. NetSecWall blocks its Adult / Porn category, around 900,000 domains, for every browser and app on the PC, behind a password.
How to block gambling sites on a PC
Block the Gambling website category on the PC and lock the setting behind a password someone else holds. No filter catches every gambling site, so pair the block with support beyond the computer.
Block games during homework time
Block the game programs themselves, not just gaming websites. NetSecWall can cut a game's internet for good or for an hour, block gaming sites, and hold new apps until you approve them.
How to block a program in Windows Firewall, two ways
Create an outbound rule for the program's .exe in Windows Defender Firewall with Advanced Security, set to Block the connection. Or right-click the program in NetSecWall and choose Block.
Cutting telemetry without breaking Windows Update
Use Windows' own diagnostic data settings for Windows, and block telemetry one app at a time for everything else. Blocking svchost.exe or Microsoft domains wholesale is what breaks Update.
Can kids get around parental controls? An honest answer
Yes. A determined child can get around almost any parental control, especially with admin rights, another device or a VPN. You can make it much harder, and talking to them does more than any setting.
Keep the app, cut its internet: blocking without uninstalling
Block the program's outbound connections instead of removing it. The app still opens and works offline; it just can't reach the internet until you lift the block.
A daily internet limit that counts time online, not screen time
A screen-time limit counts every minute the PC is in use. NetSecWall's daily internet time limit counts only time when the PC has an open connection, in 30-second steps, and resets at midnight.
The upload pattern that should worry you
Worry when one program uploads far more than it downloads, in bulk, to a place you can't explain. That's the shape of data theft. Backups and sync look the same, so context decides.