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Is there a way to generate a system alert on a windows 2003 server whenever there is an ANONYMOUS LOGON event in the event viewer?

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4 Answers 4

In other words, yes you can do this but not out of the box. As mh stated your best bet is to script this, or use a tool for monitoring event logs. There are a number of ways to do what you want.

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My answer here will probably do what you're looking for with a bit of modification.

Basically, you can install a script, running as a service, to receive notification when new events are posted to the event log and act upon those events.

My script in that answer can be used to monitor events matching a combination of : event log (Application, Security, System, etc), event ID, category, type, user, and a regexp match on the event message. The script, as written there, sends emails. You could easily plumb it to do something else.

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It depends on what kind of system alert you want. If you're not averse to a bit of coding you could write a Windows Service that periodically scans these logs and looks for what you want, then reacts accordingly. You could also use something like MOM (or whatever it's called this week) or a similar third party application to do the work for you. A third (and cruder) option would be to use the publishing feature of newer Windows OSs and have a Computer Management (or Event Log) window open on your desktop with a filtered view of the security log, periodically hitting F5 to update.

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If you're in a multi-OS environment and are willing to put some work in, you can setup Windows to send it's logs via syslog to a remote server (such as a Linux server running syslog-ng), and then run a tool such as SEC to keep an eye on the logs and notify you when an anonymous login (or anything) happens.

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