Analyze Conditional Access Policy Impact - Microsoft Entra ID

Microsoft has introduced a new preview feature for Conditional Access (CA) policies that allows users to analyze the historical impact of these policies without ingesting sign-in logs into Azure Monitor. This feature provides insights on a per-policy basis, making it easier to evaluate the effectiveness of security policies.

You Should Know:

To leverage this feature, you need to have the appropriate permissions, specifically the Security Reader role or higher. Here are some steps and commands to get started:

1. Access the Feature:

Navigate to the Microsoft Entra ID portal.
Go to the Conditional Access section and select the policy you want to analyze.

2. Enable Report-Only Mode:

In the policy settings, enable the report-only mode to see the potential impact without enforcing the policy.

3. Query Graph API:

Use the Graph API to query sign-in logs. Here’s a sample PowerShell command to query sign-in logs:

Connect-MgGraph -Scopes "AuditLog.Read.All"
Get-MgAuditLogSignIn -Filter "createdDateTime ge 2023-10-01T00:00:00Z and createdDateTime le 2023-10-31T23:59:59Z"

4. Analyze Policy Impact:

Use the new preview feature to analyze the impact of the policy. The feature will provide insights based on historical data.

5. Review Insights:

Review the insights provided by the feature to understand how the policy would have affected sign-ins.

What Undercode Say:

This new feature is a significant step forward in managing and analyzing Conditional Access policies. By providing historical insights without the need for Azure Monitor, it simplifies the process and reduces overhead. Here are some additional commands and steps to enhance your understanding:

Check Policy Details:

Get-MgIdentityConditionalAccessPolicy -PolicyId "your-policy-id"

List All Policies:
```
Get-MgIdentityConditionalAccessPolicy
```

Export Sign-In Logs:

Get-MgAuditLogSignIn -All | Export-Csv -Path "signin_logs.csv"

Monitor Policy Changes:

Get-MgAuditLogDirectoryAudit -Filter "activityDisplayName eq 'Update conditional access policy'"

For more detailed information, you can refer to the official documentation: Analyze Conditional Access Policy Impact – Microsoft Entra ID.

This feature is particularly beneficial for organizations that want to ensure their security policies are effective without the complexity of additional logging and monitoring tools. It’s a great addition to the Microsoft Entra ID suite, providing more granular control and insights into security policies.