I assumed I didn't need to have Azure Arc for my endpoint since I installed AMA. Am I wrong for assuming that?
For any machine that isn't in Azure, the Azure Arc agent must be installed on the machine before the Azure Monitor Agent can be installed. Follow the MS Doc for more details
The reason for not receiving Windows Firewall logs in the Log Analytics workspace, even after installing the Security and Audit solution and enabling the Firewall, may be that logging is not enabled.
Please ensure that firewall logging is enabled on the Windows VM by navigating to Firewall & network protection > Advanced settings. Then, right-click on Windows Defender Firewall, go to Domain Profile, and select Customize under logging.
Please make sure to enable logging for each profile.
Once logging is enabled, the logs will be generated in the following path:
The default location for firewall log files is C:\windows\system32\logfiles\firewall\pfirewall.log.
You can enable logging for all profiles using the following command line:
netsh advfirewall set allprofiles logging allowedconnections enable
netsh advfirewall set allprofiles logging droppedconnections enable
I tested this in my environment, as the firewall logs were not showing before.
I created a Windows VM and enabled Security and Audit, along with a Log Analytics Workspace, as shown below.
Then, I created a DCR rule with endpoint configurations as shown below.
Under Collect and Driver Settings, add a Data Source > Select Firewall Logs > Under the Destination tab, select the previously created Log Analytics workspace.
In the final step, I enabled Windows Firewall logs on my VM as explained above. After 5 to 10 minutes, the Windows Firewall logs appeared in the Log Analytics workspace, as shown below.
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Reference**: Collect Windows Firewall logs from virtual machine with Azure Monitor
How to use the Windows operating system (OS) Azure Monitor Agent Troubleshooter
I hope this helps to resolve your issue. Please feel free to ask any questions if the solution provided isn't helpful.
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