passive check issues on top of my head

[Neil]

Hey guys, 

I got passive checks working. As an example, I used SNARE windows client to 
send messages to Syslogd on the Nagios machine. What SNARE does is that it 
monitors Windows Event logs. 

I am also using swatch to monitor /var/log/messages. The remote machine I 
tested was behind a firewall but is able to initiate a traffic going to the 
Nagios box on port 514/UDP. This is the purpose of passive anyways. :) 

Anyways, for my testing, I created a service-check in services.cfg named 
w3svc. And on my nagios machine, I told swatch to monitor the string 
"stopped". And also, on my perl script, I had a regexp that checks the 
string "stopped". So if it matches, it populates the nagios.cmd file. 

Now, here is the issue I am thinking now. Since SNARE just monitors the 
event logs, how can I be sure that the STATE that Nagios have is still 
reliable? Looks like freshness is the answer. But, my nagios can't initiate 
connection to the machine behind the firewall. And also, W3SVC or IIS World 
Wide Web service doesn't go down often. 

So, what am I supposed to do now? What is the solution for this situation? 

Any help will be greatly appreciated! 

Neil


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