Implement nagios openvpn plugin
There are already a bunch of nagios openvpn plugins. Most of these connect to the management interface.
We would like one that does not use the management interface (but can perhaps use the status file, see --status).
Sometimes users can be connected, but the vpn is not actually working and traffic cannot route out. We would like to be able to detect this condition and shut down the openvpn server so that new clients don't attempt to connect. Perhaps the nagios plugin could actually connect to the vpn gateway and try to ping out.
(from redmine: created on 2012-06-25)