If you want to block devices to access certain websites through the router, you can set up a Domain Filter to achieve it.
Step 1: Open a web browser and go to http://cudy.net or http://192.168.10.1.
For details, please refer to How to log into the web interface of Cudy Router?
Step 2: Click Advanced Settings -> Domain Filter in the Security section.

Step 3: Check the settings on the Domain Filter page.

• To block the specific IP address(es)
1. Select 'Allow all except list'.
2. Type in the domain name(s) you want to block.
Example: All devices are not able to visit YouTube.

3. Save & Apply the operation.
• To allow the specific device(s)
1. Select 'Allow list only'.
2. Type in the domain name(s) you are allowed to access.
Example: Only allowed to visit YouTube, the other website will not be able to load.

3. Save & Apply the operation.
Note:
1. If you also want to limit other websites, please click 'Add' to add new entries. One entry can only type in one website.
2. When you don't want to limit the internet, choose 'Disable' from the drop-down list and save the settings, not only 'Delete' the item.
42 comentarios
@Dear Nina,
You can change the Wi-Fi password and even hide the SSID.
“What about us who doesn’t have the Mac filter nor the option to block unknown devices connected. How can we manage that and remove unknown connected devices.”
What about us who doesn’t have the Mac filter nor the option to block unknown devices connected. How can we manage that and remove unknown connected devices.
@Dear Chris,
1. Please make sure the SPI Firewall is not disabled by you. You can find it in the “Firewall” function page.
2. If SPI Firewall is enabled, please describe how do you set this function and rules. What is the problem like.
“I can’t get the web filter to work at all, I am on a P5 with latest firmware, no IPV6, and it does not matter if I use manual or automatic DNS. How to solve this? With kind regards, Chris”
I can’t get the web filter to work at all, I am on a P5 with latest firmware, no IPV6, and it does not matter if I use manual or automatic DNS. How to solve this? With kind regards, Chris
@Dear Cudybroke,
Our technical support has contacted you via email. Please check.
“Hi, is there any fix for blocking sites?
As I have tried the domain filter, adding required sites and selected ‘allow all except listed’ does no effect. While have also done through parent controls, again to no effect to stopping access to the sites.
I don’t have ipv6 on and DNS are set to defaults on devices.
My cudy router is as follows;
Firmware Version
2.4.16-20250804-150319
Hardware
LT500D V2.0”