How to block adult sites on Linux
Set up Linux
- 1Open Settings → Network (or Wi-Fi) and click the gear icon next to your connection.
- 2Open the IPv4 tab, switch Automatic off next to DNS, and enter the two addresses below separated by a comma.
- 3Click Apply, then turn the connection off and on again.
- 4Install the ZenTab extension in Chrome, then open zentab.live/protect and click Test this device.
185.Browsers can bypass the system filter with their own secure DNS. In Chrome, Settings → Privacy and security → Security → Use secure DNS should be off or set to the address above. In Firefox, set DNS over HTTPS to Off or to the same address.
Use a non-sudo account for everyday work and let someone you trust keep the admin password, so network settings can't be changed on impulse.
Check that it worked
Open zentab.live/protect on this device and tap Test this device. It checks that known adult sites are unreachable without opening or showing anything. Sign in with your Gmail first and the result appears on your dashboard, next to your other devices.
Frequently asked questions
My distro doesn't use NetworkManager. What then?
Set the same two addresses wherever your system configures DNS, for example the DNS= line in /etc/systemd/resolved.conf for systemd-resolved, then restart the service.
Does ZenTab work on Linux?
Yes. ZenTab runs in Chrome and Chromium-based browsers on Linux, with every feature it has on Windows and Mac.
Protect Chrome on your computer too
ZenTab blocks adult sites in Chrome from the moment you install it. Pro adds urge challenges, SafeSearch everywhere and a 30-minute lock, so a weak moment passes before you can switch it off.