Nagios Support Forum

Hi all,
I try to get as much information on The Protocol provides NRPE.

I used this plugin as part of a project monitoring with Nagios to Windows servers (NSClient + +) and Linux (nagios-nrpe-server).

What I would like to know is the details of establishing communication.
How is negotiated SSL communication? Who does what in terms of security?

Thks for help..

This is the official NRPE documentation:

http://nagios.sourceforge.net/docs/nrpe/NRPE.pdf

However, I don't think there is much info on SSL and security in it.