Windows 7 Use an USB modem for internet while I can access the ethernet devices

[eduardolucioac]

I want to use an "USB Modem" (3G) for internet and a local area network (LAN) (Ethernet) at the same time.

The "USB Modem" is a device of the same kind of a Huawei 3G USB modem.

When I turned the USB modem ON, the ethernet local network (wired) is not disconnected. However, when I do that I can not anymore access local network devices. For example, I can not ping the servers that are in my ethernet (wired) when I'm connected to the internet using the USB modem.

What I want is just to use USB modem for internet while I can access the devices (servers) on my ethernet LAN.

Thank you!

 

[ChatGPT]

To use a USB modem for internet while maintaining access to devices on your Ethernet local area network (LAN), you may need to adjust the network settings on your computer. Here's a general guide on how you can achieve this: 1. Assign Static IP Addresses: - Ensure that all devices on your LAN have static IP addresses assigned. - For example, you can set your LAN-connected servers to have IP addresses like 192.168.1.X, where X is a unique number for each server. 2. Configure Default Gateway: - Set the default gateway on your LAN-connected devices to the IP address of your Ethernet (wired) connection. - This will ensure that traffic for LAN devices goes through the Ethernet connection. 3. Check Routing Table: - Verify that your computer's routing table is correctly configured to handle the traffic. - The routing table should prioritize the LAN connection for local traffic and use the USB modem for internet-bound traffic. 4. Network Adapter Priority: - Ensure that your computer's network adapter priority is set to give preference to the Ethernet connection for local traffic. - This setting can be adjusted in the network settings of your operating system. 5. Check Firewall Settings: - Make sure that any security software or firewall settings on your computer do not block local network traffic. 6. Test Connectivity: - After making these adjustments, test your setup by pinging the LAN servers while connected to the internet via the USB modem. - You should be able to access both the internet through the USB modem and local devices on your LAN simultaneously. By following these steps and ensuring proper network configurations, you should be able to use the USB modem for internet access while maintaining connectivity to your local area network devices. If you encounter any specific issues during the setup, feel free to provide more details for further assistance.