How to Block All Websites and Allow Only Specific Websites in Windows Server Using LAN Method

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This guide provides step-by-step instructions on blocking all websites on a Windows Server except a few allowed websites by configuring LAN settings. By setting up a proxy to block access, you can limit internet browsing to only the specified websites.

Requirements

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• Administrator access on the Windows Server.
• Websites you want to allow listed and ready to add.

Steps to Block All Websites and Allow Only Specific Sites

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Step 1: Access the Control Panel

Open the Control Panel by searching for it in the Start menu.

Step 2: Navigate to Network and Internet Settings

In the Control Panel, select Network and Internet.

Step 3: Open Internet Options

In the Network and Internet window, click on Internet Options to open network configuration settings.

Step 4: Go to the Connections Tab

In the Internet Options window, switch to the Connections tab.

Step 5: Open LAN Settings

Under the Connections tab, click on LAN settings to access proxy server settings.

Step 6: Enable Proxy Server

In the Local Area Network (LAN) Settings window, check the box for Use a proxy server for your LAN.

Step 7: Enter Proxy Address

In the Address field, enter 127.0.0.1, which redirects internet requests to a local server (effectively blocking all other sites).

Click on Advanced to configure exceptions for specific sites.

Step 8: Configure Exceptions for Allowed Websites

In the Proxy Settings window, find the Do not use proxy server for addresses beginning with: field.

In this field, enter the websites you want to allow (e.g., google.com; example.com). Use a semicolon (;) to separate each website.

Step 9: Verify Blocked Websites

Open a web browser and try to access websites that are not listed in the exceptions. These websites should be blocked and will not load.

Step 10: Test Access to Allowed Websites

In the same browser, try accessing one of the allowed websites (e.g., google.com). It should load successfully, while other websites remain blocked.

By following these steps, you’ve successfully set up a LAN-based configuration on your Windows Server to block all websites except specific ones. You can modify the allowed websites anytime by returning to the Proxy Settings in LAN settings.