<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7036.0"> <TITLE>NRPE only_from</TITLE> </HEAD> <BODY>  Hi all, I want to test connectivity from the outside world to my Linux box inside my network, I'm wanting to test before I try and monitor an external box. On the inside of my network I have a Linux box on 192.168.3.245 running NRPE and my Nagios Server on 192.168.3.247 Both of these are connected to a 3560 Cisco Switch which in turn is connected to my Linksys Router then onto my Cable modem. On my Linux box I have in my nrpe "only_from = 192.168.3.247 which allows Nagios to gather its stats, however if I change it to the public IP address that is given I get the following errors "Check_NRPE: Error Could not complete SSL handshake". In my .cfg file on my Nagios server (the cfg of the box I want to monitor) I have pointed it to my public IP address and restarted Nagios. On my Linksys Router I'm port forwarding to the Linux box port 5666 but it makes no difference, I have even put my Linux box in the DMZ but still no joy. Does anybody know how I can test my Linux box so it looks like its from the external network, failing that does anybody have a test box I can try and monitor for 10 minutes or so. Also, NRPE the line only_from, am I allowed to put the domain name or is it just IP address only. Thanks Martyn </BODY> </HTML>