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VMware on AWS - How to restore NSX DFW firewall rules to previous state

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Customers who uses NSX day-in, day-out would like to have a point-in time restore functionality of DFW firewall rules. Many customer have a large footprints in VMC and make changes to DFW quite often. This feature was missing for long time and we could see its included in recent versions . Let's see how DFW configuration roll back works  NSX DFW configuration has versioning, and it is stored in the NSX Manager.  Every time when someone update DFW configuration, NSX creates one more version but keep storing the previous ones. You can rollback for previous config but reapplying it once again.  You can find the options under Networking & Security tab , > Security > Distributed Firewall . In the right side we see an Actions drop down. Choose View to get to the below screen.  Let’s go through the use case:  1. Original state- default config with no custom rules:  a. There are no saved configurations during last 30 days: In my existing test setup, with the current setting

Active Directory: NTDS folder and its Contents

The Active Directory Database is Stored in %SYSTEM ROOT%\NDTS folder. The file is called asntds.dit. Along with this file there are other files also present in this folder. The files are created when you run dcpromo. The list of files and use of those files are listed below
1. ntds.dit : This is the main database file for active directory.
2. edb.log : When a transaction performed to ad database, like writing some data first the data will be stored to this file. And after that it will be sent to database. So the system performance will be depends on how this data from edb.log file will be written to ntds.dit. multiple .log files will be created according to the requirement.
3. res1.log : Used as reserve space in the case when drive had low space. It is basically 10MB in size and created when we run dcpromo.
4. res2.log : Same as res1.log. It is also 10MB in size and the purspose also same.
5. edb.chk : This file records the transactions committed to ad database. During shutdown, shutdown statement is written to this file. If it is not found when the system rebooted, the ad database tries to check with edb.log for the updated information.
6. Drop folder : It contains details related to SMTP.

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