L1 BIO 16.01 ISO A.12.4.1 CIS 18.9.19.2

Link Sharing Restricted

📅 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 link sharing restricted via Microsoft Intune apparaat configuratie beleid of compliance policies om Windows endpoints te beveiligen volgens security best practices.

Vereisten

m365

Implementatie

Gebruik PowerShell-script link-sharing-restricted.ps1 (functie Invoke-Monitoring) – Monitoren.

monitoring

Gebruik PowerShell-script link-sharing-restricted.ps1 (functie Invoke-Monitoring) – Controleren.

Remediatie

Gebruik PowerShell-script link-sharing-restricted.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 Link Sharing Restricted .DESCRIPTION Restricts SharePoint link sharing to specific people and sets expiration .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 "Link Sharing Restricted" -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 DefaultSharingLinkType,DefaultLinkPermission,RequireAnonymousLinksExpireInDays" -ForegroundColor Gray Write-Host "`n Required Settings:" -ForegroundColor Cyan Write-Host " ✓ DefaultSharingLinkType: Direct (Specific People)" -ForegroundColor Gray Write-Host " ✓ DefaultLinkPermission: View" -ForegroundColor Gray Write-Host " ✓ RequireAnonymousLinksExpireInDays: 30 or less" -ForegroundColor Gray Write-Host "`n Security Benefits:" -ForegroundColor Cyan Write-Host " • Prevents accidental broad sharing" -ForegroundColor Gray Write-Host " • Requires explicit user selection" -ForegroundColor Gray Write-Host " • Sets automatic expiration" -ForegroundColor Gray Write-Host " • Reduces data exposure risk" -ForegroundColor Gray Write-Host "`n ⚠️ Note: Configure via SharePoint Admin Center" -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.