Nagios Support Forum

OK your posts help me to solve it

In [/settings/default] section, adding this line: And now, that's work!

What is your version of nrpe? root@xxxxxxxx:/usr/local/nagios/libexec# ./check_nrpe -h NRPE Plugin for Nagios Copyright (c) 1999-2008 Ethan Galstad (nagios@nagios.org) Version: 2.12 Last Modified: 03-10-2008 Post the output here. root@xxxxxxxx:/# usr/local/nagios/libexec/check_nrpe -H 10.0.0.45 CHE...

Not enough info to understand.
What kind of router (mark and model)?
What kind of script is executed from Nagios?

Since Nagios: root@xxxxxxx:/usr/local/nagios/libexec# ./check_nrpe -H 10.0.0.45 -n CHECK_NRPE: Received 0 bytes from daemon. Check the remote server logs for error messages. Since Win2008 w/NSClient: D rrpe Accepting connection from: 10.0.0.4, count=1 E nrpe Failed to establish secure connection: un...

What you means by "last"? You knows its name?

Edit: don't modify your first message but post a message behind mine with new info
If not, the logic of this thread is lost

Using NSClient 0.4.4 stable and running on a Win2008 server: Allowed hosts definition: 10.0.0.0(255.0.0.0) Binding to: [::]:5666(ipv6) Attempting to bind to: [::]:5666(ipv6) Binding to: 0.0.0.0:5666(ipv4), reopen: true, reuse: true Attempting to bind to: 0.0.0.0:5666(ipv4) NSClient++ - 0.4.4.23 2016...