In this guide, you will learn how to troubleshoot connection issues on your Linux device.
Usually this problem can be resolved in a few simple steps. However, since work and home networks differ greatly, some may have specific restrictions that block the VPN connection.
Possible solutions
- Run the diagnostic tool
- Update to the latest NordLayer application version
- Change the server
- Change the connection protocol
- Make sure DNS works as expected
- Disable potentially interfering applications
- Reset network settings
- Check network performance
Run the diagnostic tool
Running the Linux Diagnostic Tool (nordlayer-diagtool run) right after the issue occurs collects the logs, status, and settings our support team needs, which speeds up troubleshooting.
Update to the latest NordLayer application version
Make sure you are using an up-to-date NordLayer application version for your Linux machine.
Change the server
Check whether you can connect to different locations. For example, if connecting to the United States fails, try Germany or another country. If a particular location is unreachable, let our 24/7 customer support team know which one, and the team will take action.
Change the connection protocol
Different VPN protocols use different network ports, and a specific port may be blocked on your network. Test all available protocols on Linux — NordLynx, OpenVPN (UDP), and OpenVPN (TCP).
Make sure DNS works as expected
The NordLayer application will have issues if DNS requests are not working as expected. See the DNS guide to verify everything is in order.
Disable potentially interfering applications
If you have another VPN application installed, try uninstalling it. Antivirus software can also interfere with the VPN connection and refuse to let it through — try disabling it for a few minutes to see whether it affects the NordLayer connection. Because the application modifies your connection settings, some antivirus software may consider it a threat and block the connection attempt.
Reset network settings
As a last resort, reset your device's network settings. This clears cached routing, cached DNS records, saved Wi-Fi connections, and settings made by networking programs. See How to reset network settings on Linux.
Check network performance
Sometimes the issue is poor network performance — low bandwidth, high latency, or packet loss. Run a speed test for a quick overview. For a more in-depth view, use My traceroute:
mtr nordlayer.com
While not connected to a VPN, latency should be well below 100 ms and packet loss should not exceed 0.1%.
Note: In case you have any questions or are experiencing any issues, please feel free to contact our 24/7 customer support team.