Dit regelen configureert Standaard link specific people via Microsoft Intune apparaat configuratie beleid of compliance policies om Windows endpoints te beveiligen volgens security best practices.
Vereisten
m365
Implementatie
Gebruik PowerShell-script default-link-specific-people.ps1 (functie Invoke-Monitoring) – Monitoren.
monitoring
Gebruik PowerShell-script default-link-specific-people.ps1 (functie Invoke-Monitoring) – Controleren.
Remediatie
Gebruik PowerShell-script default-link-specific-people.ps1 (functie Invoke-Remediation) – Herstellen.
Compliance en Auditing
Beleid documentatie
Compliance & Frameworks
CIS M365: Control 18.9.19.2 (L1) - CIS Security Benchmark aanbevelingen
BIO: 16.01 - BIO Baseline Informatiebeveiliging Overheid - 16.01 - Gebeurtenissen logging en audittrails
ISO 27001:2022: A.12.4.1 - ISO 27001:2022 - Gebeurtenissen logging en audittrails
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
Default Link Specific People
.DESCRIPTION
Sets default sharing links to specific people only (most secure)
.NOTES
NL Baseline v2.0#>#Requires -Version 5.1#Requires -Modules Microsoft.Graph
[CmdletBinding()]
param([switch]$Monitoring)
$ErrorActionPreference = 'Stop'
Write-Host "`n========================================" -ForegroundColor Cyan
Write-Host "Default Link Specific People" -ForegroundColor Cyan
Write-Host "========================================`n" -ForegroundColor Cyan
function Invoke-Monitoring {
try {
Connect-MgGraph -Scopes "Domain.Read.All" -NoWelcome -ErrorAction Stop
$domain = (Get-MgDomain | Where-Object { $_.IsDefault }).Id
$tenantName = $domain.Split('.')[0]
Connect-SPOService -Url "https://$tenantName-admin.sharepoint.com" -ErrorAction Stop
$tenant = Get-SPOTenant$result = @{
isCompliant = ($tenant.DefaultSharingLinkType -eq 'Direct')
linkType = $tenant.DefaultSharingLinkType
permission = $tenant.DefaultLinkPermission
}
Write-Host " Default Sharing Link Type: $($tenant.DefaultSharingLinkType)" -ForegroundColor $(
if ($tenant.DefaultSharingLinkType -eq 'Direct') { 'Green' }else { 'Red' }
)
Write-Host " Default Link Permission: $($tenant.DefaultLinkPermission)" -ForegroundColor Gray
Write-Host "`n Link Types (secure to less secure):" -ForegroundColor Cyan
Write-Host " • Direct: Specific people only (most secure)" -ForegroundColor Green
Write-Host " • Internal: Anyone in organization" -ForegroundColor Yellow
Write-Host " • Anonymous: Anyone with link (least secure)" -ForegroundColor Red
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 " • Reduces data exposure risk" -ForegroundColor Gray
if ($result.isCompliant) {
Write-Host "`n[OK] COMPLIANT - Links default to specific people" -ForegroundColor Green
exit 0
}
else {
Write-Host "`n[FAIL] NON-COMPLIANT - Default sharing too broad!" -ForegroundColor Red
exit 1
}
}
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
}