Support forum for Nagios Core, Nagios Plugins, NCPA, NRPE, NSCA, NDOUtils and more. Engage with the community of users including those using the open source solutions.
First thing, not that it is the definite issue, I would highly suggest updating nagios openssl version, .98 and 1.0.1 have many things intentionally not backwards compatible. Secondly, did you install nrpe from source or use a packaged build? If from source, did you build with ssl?
Nagios-Plugins maintainer exclusively, unless you have other C language bugs with open-source nagios projects, then I am happy to help! Please pm or use other communication to alert me to issues as I no longer track the forum.