Nagios watching traffic over VPN

Is there a plugin, or a way to get nagios to watch and report on each individual file transported over HTTPS/SSL or a VPN connection? Or is it a plugin for this I even need. I’m a little green to nagios and Network Engineering. I’ve been thrust into this assignment from being a software developer. :lol:

http://forums.meulie.net/t/using-nagios-for-file-transport/5319