Windows 10 Dual Ethernet Adapters Web Access

Allowing PCs Access to the Web with Two Ethernet Adapters on Windows 10

Abstract: This article provides a solution for Windows 10 users who have two Ethernet adapters and want to allow PCs on the internal network to access the web. The primary adapter is configured as a router and hosts a DHCP server.

Created: 2025-03-02 by UserComp.com Editors

Windows 10 can host two Ethernet adapters, with one connected to a router and acting as a DHCP server for an internal network of PCs. To allow PCs access to the web, follow these steps:

Enable Internet Connection Sharing (ICS)
- Right-click the network icon in the taskbar and select Open Network and Sharing Center.
- Click on the network connected to the router.
- Click on Properties.
- Select the second Ethernet adapter and click on Allow other network users to connect through this computer's Internet connection.
- Click OK.
Configure DHCP Scope
- Open the Control Panel, search for Network and Sharing Center, and click on Change adapter settings.
- Right-click the network adapter acting as the DHCP server and select Properties.
- Select Internet Protocol Version 4 (TCP/IPv4) and click on Properties.
- Click on Advanced and select the DHCP tab.
- In the Scope section, set the Starting IP address and Ending IP address for the internal network.
- Click OK to save the changes.
Set Static IP for Router
- Connect to the router's web interface.
- Navigate to the DHCP settings and set a static IP address for the router within the DHCP scope (usually outside the range of the internal network).
Configure Internal Network PCs
- Set the internal network PCs to obtain an IP address automatically.

Now, the internal network PCs should be able to access the internet through the Windows 10 PC hosting two Ethernet adapters.

References

Microsoft Docs: Configure Internet Connection Sharing
Microsoft Docs: Configure a DHCP server in Windows
Microsoft Docs: Configure a static IP address for your router
Microsoft Docs: Configure TCP/IP settings for your network adapter

Tags: Windows Networking

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