How to check the encryption protocol used when connecting to openvpn

[flowerseacar]

How to check the encryption protocol used when connecting to openvpn

[dsommers]

If you enable debug logging and increase the log level in your configuration profile, you will see information like this in your logs:

2024-05-02 08:36:24 Client DEBUG: [Core] PROTOCOL OPTIONS:
       cipher: AES-256-GCM
       digest: NONE
       key-derivation: TLS Keying Material Exporter [RFC5705]
       compress: NONE
       peer ID: 1
       control channel: tls-crypt v2 enabled

To enable debug logging, as root run this command:

# openvpn3-admin log-service --log-level 6

To increase the log level in your configuration profiles ... if you have imported the configuration profile using openvpn3 config-import, you can do this:

$ openvpn3 config-manage --show --log-level 6 --config CONFIG_NAME

otherwise add verb 6 to your configuration file.