Windows Server audit. Auditing Windows Systems. Jeff Melnick August 23, Krishna Kumar November 25, Richard Muniz May 7, Nick Cavalancia November 11, Featured tags. We care about security of your data. Privacy Policy.
The shared folder on the server is the only place I enabled Audit. After much work I finally got the security log to stop logging 14 logs about svchosts access ever minute.
Now the security log waits until the XP computer connects to the shared folder and opens a file. I did this with one file, a small Word doc.
I have read several Spiceworks support logs for file access audit. One user generates entries for on file opened? What about my production environment with 50 users and thousands of files?
Quote from Ron Schnieder in Jaws, "We are going to need a bigger boat! That is normal, unfortuante but normal. When a machine opens a file there may be several hooks into the file to handle different things. Each one of these is recorded in the audit log. Also opening a file also generates hits for opening a folder depending on how you setup auditing. In fact when I worked at MS it was not recommend to turn file access auditing on unless you looking at a specific file or folder for a specific reason.
However, the name is misleading because Windows only issues the event when the operation is complete. In reality, there might be multiple events for a single handle, logging smaller operations that make up the overall action. For example, a rename involves a read, delete, and a write operation.
The following table provides more information about each event:. Unfortunately, this is not a one-to-one mapping. Each file action includes many smaller operations that Windows performs, and those smaller operations are the ones logged. Consider this only as a starting point. The analysis above is extremely simplified, and real-world implementation will require more research. Some areas for further research are:.
You may want to review this PowerShell Script which reads Windows events and generates from them meaningful file activity report to get a somewhat less simplified analysis. Pro tip: Varonis has been auditing Windows file servers at petabyte scale for over a decade, with numerous patents related to normalization and analysis. Give it a try to save yourself time figuring out how to parse raw logs. While the Windows file activity events seem comprehensive, there are things that cannot be determined using only the event log.
A few examples are:. If you are going to use the native Windows file auditing, you need to be aware of how much data you are going to collect. Collecting Windows file activity is a massive event flow and the Microsoft event structure, generating many events for a single file action, does not help.
Such a collection will require more network bandwidth to transfer events and more storage to keep them. Furthermore, the sophisticated logic required may need a powerful processing unit and a lot of memory. Varonis records file activity with minimal server and network overhead — enabling better data protection, threat detection, and forensics. An alternative approach for implementing this important security and compliance measure is to use a lightweight agent on each monitored Windows system with a focus on file servers.
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