How Does Passive Monitoring Work?

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How Does Passive Monitoring Work?Expand / Collapse
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Posted 11/20/2008 3:52:39 PM
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I have setup eventlog monitoring- watching for specific event IDs.  Does WUG establish a permanent connection to all monitored Windows hosts?  Do all events pass to WUG for filtering, or is filtering done at the monitored host?  How?  Thanks you very much.  John
Post #48926
Posted 11/21/2008 12:49:10 PM


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Well, yes, my understanding is that basically there is an ongoing tcp connection between wug and the server. Whether filtering is made on the wug box or on the source server, I don't know.

You may be interested to use evntwin instead (search that in the forums). It's a windows tool allowing you to turn selected events into snmp traps. Much smarter. No permanent tcp connection (heavier on resources and network), filtering 100% sure on the server, ability to "filter out" events when they happen in quick succession, ability to export your config and import it on another host.

Reading, writing and arithmetic - If you need to choose, please take option 1.

Post #48960
Posted 11/24/2008 2:53:41 PM


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If you setup passive monitoring without a catch all condition for unsolicited traps and don't have a specific passive monitor assigned to what you are expecting to receive, it gets thrown on the floor.

It took some trial and error, but I ended up writing some passive monitors for SNMP strings that I actually cared about.


-...
Post #48992
Posted 12/10/2008 11:19:01 AM
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Passive Monitoring allows you to catch traps from devices you want to monitor. Instead of polling a device WSUG listens for traps. When the device you're monitoring sends out the trap you want, WSUG sees it then initiates an action that you specify ... e-mail, page, etc.
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