On Mon, May 29, 2017 at 08:36:25PM +0200, Sebastiaan Couwenberg <sebas...@xs4all.nl> wrote a message of 23 lines which said:
> > CHECK_NRPE: Error - Could not complete SSL handshake with > > 2605:4500:2:245b:483a:663a:623a:633a: 1 > > Have you configured SSL, It worked before (before I upgraded to 3.0.1, the version in unstable), so it is probably not one of the usual SSL problems. tshark shows that the server indeed sends back a: Secure Sockets Layer TLSv1.2 Record Layer: Alert (Level: Fatal, Description: Handshake Failure) Content Type: Alert (21) Version: TLS 1.2 (0x0303) Length: 2 Alert Message Level: Fatal (2) Description: Handshake Failure (40) > and specifically read the NEWS entry about the incompatibility > between versions? /usr/share/doc/nagios-nrpe-plugin/NEWS.Debian.gz has nothing about 3.1. The entry about 3.0 seems to say that there is zero chance it will work between Debian unstable and stable :-(