Unable to ping or connect to Ubuntu Mate 22.04 PC with 2 network connections - Wifi to Internet, Ethernet to local network
Published: 2023-08-22 10:05:19

Unable to ping or connect to Ubuntu Mate 22.04 PC with 2 network connections - Wifi to Internet, Ethernet to local network
--------------------------------------------------------------------------------------------------------------------------

As software developers, we often find ourselves troubleshooting various issues that arise during the development process. One common problem that Ubuntu Mate 22.04 users may encounter is the inability to ping or connect to their PC when using two network connections simultaneously - one for Wifi to access the internet and another for Ethernet to connect to a local network. In this article, we will explore some possible solutions to this frustrating issue.

### 1\. Check Network Configuration

The first step in resolving this issue is to ensure that your network configuration is correctly set up. Verify that both your Wifi and Ethernet connections are active and properly configured. You can do this by checking the network settings in the Ubuntu Mate desktop environment or by using the command line.

 

    
      $ ifconfig
      

 

Make sure that both interfaces, typically labeled as wlan0 for Wifi and eth0 for Ethernet, have valid IP addresses assigned. If not, you may need to manually configure them or check your router settings.

### 2\. Check Firewall and Network Settings

Firewalls can sometimes interfere with network connectivity, so it's worth checking your firewall settings. Ensure that the necessary ports are open for both your Wifi and Ethernet connections. Additionally, check if any network policies or rules are preventing communication between the two networks.

### 3\. Disable Network Manager's "Network Isolation" Feature

Ubuntu Mate's Network Manager includes a feature called "Network Isolation" that can prevent communication between different network interfaces. Disabling this feature may help resolve the issue.

To disable Network Isolation, open a terminal and enter the following command:

 

    
      $ nm-connection-editor
      

 

In the Network Connections window that appears, select the Ethernet connection and click on the "Edit" button. In the "General" tab, uncheck the "Automatically connect to this network when it is available" option. Then, go to the "IPv4 Settings" tab, click on the drop-down menu next to "Method," and select "Shared to other computers." Save your changes and restart your network connection.

### 4\. Update Network Manager and Drivers

Outdated network manager or driver software can sometimes cause compatibility issues. Ensure that you have the latest updates installed for both Network Manager and your network drivers. You can do this by using the package manager or by checking the manufacturer's website for driver updates.

### Conclusion

Having trouble pinging or connecting to your Ubuntu Mate 22.04 PC with both Wifi and Ethernet connections can be frustrating. However, by following the steps outlined in this article, you should be able to resolve the issue and regain connectivity between your local network and the internet. Remember to check your network configuration, firewall settings, disable Network Manager's "Network Isolation" feature, and update your network manager and drivers if necessary. With a bit of troubleshooting, you'll be back on track with your software development in no time!

### References:

*   Ubuntu Mate Official Website - https://ubuntu-mate.org/
*   Ubuntu Documentation - https://help.ubuntu.com/
*   Linux Network Configuration - https://linux.die.net/man/5/interfaces