<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style></style></head><body lang=ES-MX link=blue vlink=purple><div class=WordSection1>Hi, <o:p></o:p><o:p> </o:p>You should use check_nrpe for linux boxes and nsca for you windows boxes with nsclient++ . I have configured both in my environment and I’m able to monitor remote host (Windows & Linux) behind firewalls. You can use these guides to accomplish your purposes. <o:p></o:p><o:p> </o:p><a href="http://nagios.sourceforge.net/docs/nrpe/NRPE.pdf">http://nagios.sourceforge.net/docs/nrpe/NRPE.pdf</a><o:p></o:p><a href="http://nagios.sourceforge.net/download/contrib/documentation/misc/NSCA_Setup.pdf">http://nagios.sourceforge.net/download/contrib/documentation/misc/NSCA_Setup.pdf</a><o:p></o:p><o:p> </o:p>I also recommend you to read these links to understand better how nsca, nrpe and nsclient++ work together. And also the built in checks you can perform with them:<o:p></o:p><a href="http://www.nsclient.org/nscp/wiki/doc/usage/nagios/nsca">http://www.nsclient.org/nscp/wiki/doc/usage/nagios/nsca</a><o:p></o:p><a href="http://nsclient.org/nscp/wiki/doc/usage/nagios/nrpe">http://nsclient.org/nscp/wiki/doc/usage/nagios/nrpe</a><o:p></o:p><o:p> </o:p>Hope this help you, <o:p></o:p><o:p> </o:p>Regards,<o:p></o:p><o:p> </o:p>Jorge L. Pañeda<o:p></o:p><o:p> </o:p><img border=0 width=147 height=55 id="Picture_x0020_1" src="cid:image001.jpg@01CCE582.D20BCE40" alt="Description: Description: scio"><o:p></o:p><o:p> </o:p>Systems Administrator<o:p></o:p>Scio Consulting | IT & Infrastructure Dept.<o:p></o:p>Las Cañadas 501 Int. 230 Col. Tres Marías <o:p></o:p>Morelia, Mich., México Tel. (443) 310-96-01 y (443) 310-96-02 ext. 402<o:p></o:p>U.S. Phone: 408 404 3897 Ext. 402<o:p></o:p><a href="http://www.sciodev.com/">www.sciodev.com</a><o:p></o:p><o:p> </o:p>From: mail@catsnest.co.uk [mailto:mail@catsnest.co.uk] Sent: lunes, 06 de febrero de 2012 01:46 p.m. To: Nagios Users List Subject: Re: [Nagios-users] monitor hosts behind firewalls<o:p></o:p><o:p> </o:p><o:p> </o:p><div>On Mon, Feb 6, 2012 at 5:54 PM, doug <<a href="mailto:goldcup@ix.netcom.com">goldcup@ix.netcom.com</a>> wrote:<o:p></o:p>In templates I see the initial check_command pointing to 'check-host-alive'. If I comment that out for the boxes behind the FW how will nagios react? Or must I replace it with as you suggest a 'dummy check'? All my monitoring is off-site. I monitor my clients firewalls, servers, workstations, and some routers if they have static ip. I only need 'check-host-alive' for the routers and firewalls, nothing else.<o:p></o:p><div> From: <a href="http://nagios.sourceforge.net/docs/3_0/objectdefinitions.html#host">http://nagios.sourceforge.net/docs/3_0/objectdefinitions.html#host</a> "check_command: ...If you leave this argument blank, the host will not be actively checked...." you normally have to fiddle a little with submitting a passive check to make it go green you might as well use the nrpe check as your hosts check_command in stead of disableing it it will help with service dependancys so if you loose nrpe assess to your hosts only the host will alert instead each of its services... <o:p></o:p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'>Can you give me an example of a dummy check?<o:p></o:p></blockquote><div>#!/bin/bash echo "dummy OK" return 0 ; -- Ritchie<o:p></o:p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'>Thanks<o:p></o:p><div><div> -----Original Message----- From: <a href="mailto:mail@catsnest.co.uk">mail@catsnest.co.uk</a> Reply-To: <a href="mailto:mail@catsnest.co.uk">mail@catsnest.co.uk</a>, Nagios Users List <<a href="mailto:nagios-users@lists.sourceforge.net">nagios-users@lists.sourceforge.net</a>> To: Nagios Users List <<a href="mailto:nagios-users@lists.sourceforge.net">nagios-users@lists.sourceforge.net</a>> Subject: Re: [Nagios-users] monitor hosts behind firewalls Date: Mon, 6 Feb 2012 10:39:26 +0000 On Mon, Feb 6, 2012 at 2:57 AM, doug <<a href="mailto:goldcup@ix.netcom.com">goldcup@ix.netcom.com</a>> wrote: Hi Everyone, I currently monitor various hosts behind firewalls, windows servers, linux, and some workstations. I have them all setup as active hosts that nagios pings to indicate they are up. Since they are all behind firewalls all I'm doing for host status is in fact just pinging the firewall. I'm a little confused about using passive checks and not sure if this is the right way to go about doing what I want. I monitor the firewall and know that is up, and for all those hosts behind I'm just pinging the fw, no need to do that. I use nrpe or nsclient to monitor the services and really that's all I need. Can someone point me in the right direction so I can stop the active host status pings for all hosts behind the firewalls. If you dont want to open up ping on the firewalls you could ether have a dummy hosts check (a check that just returns 0) or have nrpe as the hosts check (eg a check that just checks if nrpe is responding, again an nrpe check that just returns 0 ) client nrpe command like this command[check_nrpe_alive]=/patch/script/that/<a href="http://returns.0.sh" target="_blank">returns.0.sh</a> Nagios command: define command{ command_name check_nrpe_alive command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -C check_nrpe_alive } define host{ name behind_firewall use generic-host hostgroups +behind_firewall register 0 } then a use clause in your host config of behind_firewall Ritchie -- <-- <a href="http://23.me.uk/2" target="_blank">http://23.me.uk/2</a> --> <--Time flies like an arrow; fruit flies like a banana. --> Thanks Doug ------------------------------------------------------------------------------ Try before you buy = See our experts in action! 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The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! <a href="http://p.sf.net/sfu/learndevnow-dev2" target="_blank">http://p.sf.net/sfu/learndevnow-dev2</a> _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank">https://lists.sourceforge.net/lists/listinfo/nagios-users</a> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null<o:p></o:p></div></div></blockquote></div><o:p> </o:p></div></body></html>