Monitor Windows 2003 using nagios + SNMP

[Richard Remington]

Hi Arlytex, 

Is it possible that the SNMP password (community string) is not 'public' on your Windows 2003 servers that are behind the firewall? Perhaps if they're behind a firewall, someone also went to the trouble to change the SNMP community string (password) to reach them? 

Regards, 

Richard

arly arly wrote:
> Hi all,
> 
> I am using nagios3 and I would like an monitoring system for my
> network. I have cca 10 hosts in "my network" but they are behind
> firewall.
> I mean in "my network" which is not exposed to outside world, some
> machines are behidn firewals in.
> 
> Critical machines run Windows 2003 server OS, and I tried to use
> NSClient++, in combination with check_nrpe ( I tried both ports 5666
> and 12489 ) and I can get information from windows servers--checking
> them with check_nrpe looks ok.
> 
> Then I realized that with SNMP I could better informations ( tested on
> machines directly accessible from nagios server ) and decided to
> copy/paste working SNMP configuration from windows machines and add
> necessary servers to nagios conf files and have all unified via SNMP
> monitoring. I am using *.pl scripts from
> http://nagios.manubulon.com/snmp_storage.html and for machines
> directly accessible all is ok
> 
> But I got into troubles for servers behind firewall :) Ports 161/162 (
> UDP/TCP ) are open on firewal to windows servers
> 
> When I run
> ./check_snmp_storage.pl -H AAA.AAA.AAA.AAA -C public -m ^C: -w 80 -c
> 90 ( AAA.AAA.AAA.AAA address of win. machine behind firewal ) I am
> getting an error
> 
> ERROR: Description/Type table : No response from remote host 'AAA.AAA.AAA.AAA'.
> what means no return information from server. First I suspected on
> connectivity and I moved SNMP to listen on another port, run command
> ./check_snmp_storage.pl -H AAA.AAA.AAA.AAA -C public -m ^C: -w 80 -c
> 90 --port 2222
> but same issue ( this process works when I test it on machines which
> are not behind firewall )
> On windows machine netstat -a shows
> 
>  UDP    server:snmp        *:*
>  UDP    server:snmptrap    *:*
> 
> what means snmp is listenning ( same configuration of SNMP service
> works ok for machines which are in same net as nagios server )
> 
> I am suspection it could something to do with SNMP client / SNMP
> protocol how it works, as I am getting correct response when I sent it
> to 5666 + check_nrpe.
> 
> Any reasonable hint what I could check will very useful, so thank you
> in advance. I am preety lost I do not really know what to check more
> in order to resolve this.
> 
> Operating system I use for nagios server is Debian stable 5, I am very
> sure configuration of SNMP on Windows servers is correct. HW I am want
> to monitor are HP Proliants DL360 G5, DL380 G5
> 
> Kind regards,
> 
> Arlytex
> 
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