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API Reference: Windows CIS Benchmark Hardening

CIS Benchmark Sections

Section Topic
1 Account Policies (passwords, lockout)
2 Local Policies (audit, user rights, security options)
9 Windows Firewall
17 Advanced Audit Policy
18 Administrative Templates
19 User Configuration

PowerShell Commands

Password Policy

net accounts
# or
Get-ADDefaultDomainPasswordPolicy

Audit Policy

auditpol /get /category:*

Firewall Status

Get-NetFirewallProfile | Select-Object Name, Enabled

Registry Checks

Get-ItemProperty -Path 'HKLM:\...' -Name 'ValueName'

Key Registry Settings

Path Value Recommended
HKLM\SYSTEM\CurrentControlSet\Control\Lsa\LmCompatibilityLevel DWORD 5 (NTLMv2 only)
HKLM\...\Policies\System\EnableLUA DWORD 1 (UAC enabled)
HKLM\...\LanManServer\Parameters\SMB1 DWORD 0 (disabled)
HKLM\...\Policies\System\ConsentPromptBehaviorAdmin DWORD 2

Password Policy Settings

Setting CIS Recommendation
Minimum length >= 14 characters
Maximum age <= 365 days
Minimum age >= 1 day
Complexity Enabled
Lockout threshold <= 5 attempts
Lockout duration >= 15 minutes

Advanced Audit Policy

Subcategory Recommended
Credential Validation Success and Failure
Logon/Logoff Success and Failure
Account Management Success
Process Creation Success
Policy Change Success

GPO Export and Analysis

Export GPO

gpresult /H gpo-report.html

Secedit Export

secedit /export /cfg security-config.inf

Automated Tools

Microsoft Security Compliance Toolkit

# Download from Microsoft
# Includes GPO baselines and LGPO tool
LGPO.exe /g .\GPO-Backup

CIS-CAT

# CIS Configuration Assessment Tool
cis-cat.bat -b benchmark.xml -p "CIS Windows 11 Enterprise"

Windows Optional Features

Check SMBv1

Get-WindowsOptionalFeature -Online -FeatureName SMB1Protocol

Disable SMBv1

Disable-WindowsOptionalFeature -Online -FeatureName SMB1Protocol