OpenVPN administration

Error message(s):

OPTIONS ERROR: failed to negotiate cipher with server.  Add the server's cipher ('AES-256-CBC') to --data-ciphers (currently 'AES-256-GCM:AES-128-GCM:CHACHA20-POLY1305') if you want to connect to this server.

Resolution (for NetworkManager):

1. add following to the VPN connection file (/etc/NetworkManager/system-connections/XXX.nmconnection)
   

   data-ciphers=AES-256-CBC

2. reload the connection
   

   sudo nmcli connection reload