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Add VPN Troubleshooting

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PROTechThor 2020-10-30 15:07:40 +01:00
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---
layout: doc
title: VPN Troubleshooting
permalink: /doc/vpn-troubleshooting/
---
# VPN Troubleshooting Guide #
## Tips
* Check the VPN service's log in the VPN VM by running:
~~~
sudo journalctl -u qubes-vpn-handler
~~~
* Always test your basic VPN connection before adding scripts.
* Test DNS: Ping a familiar domain name from an appVM. It should print the IP address for the domain.
* Use `iptables -L -v` and `iptables -L -v -t nat` to check firewall rules. The latter shows the critical PR-QBS chain that enables DNS forwarding.
## VPN does not reconnect after suspend
After suspend/resume, your VPN may not automatically reconnect. In order to get it to work, you must kill your VPN system and restart it.
## VPN stuck at "Ready to start link"
After setting up your VPN system and restarting the VM, you may be repeatedly getting the popup "Ready to start link", but the VPN isn't connected.
To figure out the root of the problem, check the VPN logs in `/var/logs/syslog`. The log may reveal issues like missing libraries, which you can then install.