building a trend to detect devices send "0" events for past week
has anyone tried to build anything (trend/active list/rule) to detect or be notified on devices (which SmartConnectors are supposed to be collecting events from) which are not sending events the past entire week?
i have a basic filter built like this:
Device Vendor != ArcSight
selected Hostname, grouped these, and then count the number of event ids, to determine the number of events coming in from each devices.
this worked rather nicely, however, this gives me only a list of devices which sent in at least 1 event in the given time period, and does not give me any visibility on what is not being collected.
how can i tweak this so that it gives me a full list of device hostnames (which i will be able to pre-define, in an active list, perhaps?) including those which are sending "0" events, in the given time period (ie. 1 week)?
In the slide decks from the 2011 users conference there were at least 2 frameworks for "event flow monitoring" presented. I don't have the URLs but I bet you can search the forum and find them.