NagEventLog is a windows agent that examines the EventLog, filters it, and forwards passive alerts to Nagios via NSCA. Now with encryption support! Supports Windows 2000 and later.

More information can be found here:

• NagEventLog on NagiosExchange
• NagEventLog on Steve Shipway's Page

NagEventLog allows you to have windows event log entries filtered and passed back to your Nagios server.  Two methods I have used are:

• Report ALL errors in ALL logs and filter select EventIDs we don't need to worry about.
• Report a -specific- error that we use to trigger an event script.  Eg a "cleanup and restart" process upon a service failure.