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When tasked with analyzing permissions on a 30TB File Server, identifying direct user permissions, risky group access, and unnecessary inheritance breaks becomes a monumental challenge. This PowerShell script transforms raw NTFS permission data into an interactive HTML dashboard, providing clear security insights.
Key Features:
- Interactive Dashboard: Visual charts categorize issues by severity.
- Automated Problem Detection: Flags direct user permissions, excessive group rights, and broken inheritance.
- Risk Scoring: Quantifies environment risk based on findings.
- Optimized for Large Servers: Handles massive datasets efficiently.
- Filterable Data Tables: Enables quick navigation through issues.
- Actionable Recommendations: Suggests fixes for detected problems.
🔗 Script: GitHub/PowerShell-NTFSAudit
🔗 Sample Report: Dashboard Preview
You Should Know: Practical NTFS Permission Commands
1. Export NTFS Permissions to CSV
Get-ChildItem "C:\Shares" -Recurse | ForEach-Object {
$acl = Get-Acl $<em>.FullName
$</em>.FullName | Export-Csv "NTFS_Permissions.csv" -Append -NoTypeInformation
$acl.Access | Select-Object @{Name="Path";Expression={$_.FullName}}, IdentityReference, FileSystemRights, AccessControlType | Export-Csv "NTFS_Permissions.csv" -Append -NoTypeInformation
}
2. Check Broken Inheritance
Get-ChildItem "C:\Shares" -Recurse | ForEach-Object {
$acl = Get-Acl $<em>.FullName
if (-not $acl.AreAccessRulesProtected) {
Write-Output "$($</em>.FullName) has broken inheritance!"
}
}
3. Find Direct User Permissions
$users = Get-ChildItem "C:\Shares" -Recurse | ForEach-Object {
(Get-Acl $<em>.FullName).Access | Where-Object { $</em>.IdentityReference -notmatch "BUILTIN|NT AUTHORITY" }
} | Group-Object IdentityReference | Sort-Object Count -Descending
4. Fix Excessive Permissions
$folder = "C:\Shares\SensitiveData"
$acl = Get-Acl $folder
$rule = New-Object System.Security.AccessControl.FileSystemAccessRule("DOMAIN\Group","Read","Allow")
$acl.SetAccessRule($rule)
Set-Acl $folder $acl
5. Linux Alternative (Samba/NTFS Drives)
List NTFS permissions (if mounted) sudo getfacl /mnt/ntfs_share Reset inheritance (via icacls equivalent) sudo smbcacls //server/share / -U user%pass -R --inherit
What Undercode Says
Managing NTFS permissions at scale requires automation. This PowerShell script bridges the gap between raw data and actionable insights, but manual verification remains critical. Always:
– Audit Regularly: Schedule monthly permission scans.
– Least Privilege: Use groups, not direct user assignments.
– Document Changes: Log permission modifications via auditpol /set /subcategory:"File System" /success:enable.
– Cross-Platform Checks: On Linux, use `smbstatus` to monitor Samba access.
For deeper analysis, combine with `Sysinternals AccessEnum` or `icacls /save` for baseline comparisons.
Expected Output:
A structured HTML dashboard highlighting high-risk permissions, broken inheritance, and remediation steps.
Relevant URLs:
References:
Reported By: Mathewsbuzetti Fileserver – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
