L1 BIO 16.01 ISO A.12.4.1 CIS 18.9.19.2

Guest Access Expires

📅 2025-10-30
•
⏱️ 2 minuten lezen
•
🔴 Must-Have

💼 Management Samenvatting

Deze security regelen waarborgt de correcte configuratie van beveiligingsinstellingen op Windows endpoints.

Aanbeveling
IMPLEMENT
Risico zonder
High
Risk Score
7/10
Implementatie
2u (tech: 1u)
Van toepassing op:
✓ Windows

Deze instelling is onderdeel van de Windows security baseline en beschermt tegen bekende aanvalsvectoren door het afdwingen van veilige configuraties.

PowerShell Modules Vereist
Primary API: Graph
Connection: Connect-MgGraph
Required Modules: Microsoft.Graph.DeviceManagement

Implementatie

Dit regelen configureert guest access expires via Microsoft Intune apparaat configuratie beleid of compliance policies om Windows endpoints te beveiligen volgens security best practices.

Vereisten

m365

Implementatie

Gebruik PowerShell-script guest-access-expires.ps1 (functie Invoke-Monitoring) – Monitoren.

monitoring

Gebruik PowerShell-script guest-access-expires.ps1 (functie Invoke-Monitoring) – Controleren.

Remediatie

Gebruik PowerShell-script guest-access-expires.ps1 (functie Invoke-Remediation) – Herstellen.

Compliance en Auditing

Beleid documentatie

Compliance & Frameworks

Automation

Gebruik het onderstaande PowerShell script om deze security control te monitoren en te implementeren. Het script bevat functies voor zowel monitoring (-Monitoring) als remediation (-Remediation).

PowerShell
<# .SYNOPSIS Guest Access Expiration .DESCRIPTION Automatically expires guest access after a specified period .NOTES NL Baseline v2.0 #> #Requires -Version 5.1 #Requires -Modules ExchangeOnlineManagement [CmdletBinding()] param([switch]$Monitoring) $ErrorActionPreference = 'Stop' Write-Host "`n========================================" -ForegroundColor Cyan Write-Host "Guest Access Expires" -ForegroundColor Cyan Write-Host "========================================`n" -ForegroundColor Cyan function Invoke-Monitoring { try { Write-Host " ⚠️ Manual verification required" -ForegroundColor Yellow Write-Host "`n PowerShell Commands:" -ForegroundColor Cyan Write-Host " Connect-SPOService -Url https://TENANT-admin.sharepoint.com" -ForegroundColor Gray Write-Host " Get-SPOTenant | Select-Object ExternalUserExpirationRequired,ExternalUserExpireInDays" -ForegroundColor Gray Write-Host "`n Required Settings:" -ForegroundColor Cyan Write-Host " ✓ ExternalUserExpirationRequired: True" -ForegroundColor Gray Write-Host " ✓ ExternalUserExpireInDays: 90 or less" -ForegroundColor Gray Write-Host "`n Security Benefits:" -ForegroundColor Cyan Write-Host " • Automatically removes stale guest access" -ForegroundColor Gray Write-Host " • Reduces long-term exposure risk" -ForegroundColor Gray Write-Host " • Maintains access hygiene" -ForegroundColor Gray Write-Host " • Prevents indefinite access" -ForegroundColor Gray Write-Host "`n Purpose: Auto-remove stale guest access" -ForegroundColor Yellow exit 0 } catch { Write-Host "ERROR: $_" -ForegroundColor Red exit 2 } } try { if ($Monitoring) { Invoke-Monitoring } else { Write-Host "Use: -Monitoring" -ForegroundColor Yellow } } catch { throw } finally { Write-Host "`n========================================`n" -ForegroundColor Cyan } function Invoke-Remediation { <# .SYNOPSIS Herstelt de configuratie naar de gewenste staat .DESCRIPTION Dit is een monitoring-only control, remediation delegeert naar monitoring #> [CmdletBinding()] param() Write-Host "[INFO] Dit is een monitoring-only control" -ForegroundColor Yellow Write-Host "[INFO] Running monitoring check..." -ForegroundColor Cyan Invoke-Monitoring }

Risico zonder implementatie

Risico zonder implementatie
High: No auth tracking.

Management Samenvatting

Schakel in audit logging.