L1 BIO 16.01 ISO A.12.4.1 CIS 18.9.19.2

Schakel In Public Network Firewall Loggen Max File Size Is Set To 16 384 Kb Of Greater

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

💼 Management Samenvatting

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

Aanbeveling
Implementeer
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 Configureerert Schakel in public network firewall loggen max file size is set to 16 384 kb of greater via Microsoft Intune apparaat configuratie beleid of compliance policies om Windows endpoints te beveiligen volgens security best practices.

Vereisten

Microsoft Intune via device configuratiebeleidsregels

Implementeeratie

Gebruik PowerShell-script Schakel in-public-network-firewall-log-max-file-size-is-set-to-16-384-kb-or-greater.ps1 (functie Invoke-Monitoring) – Monitoren.

monitoring

Gebruik PowerShell-script enable-public-network-firewall-log-max-file-size-is-set-to-16-384-kb-or-greater.ps1 (functie Invoke-Monitoring) – Controleren.

Remediatie

Gebruik PowerShell-script enable-public-network-firewall-log-max-file-size-is-set-to-16-384-kb-or-greater.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 Intune Windows Firewall: Public Log Size 16384 KB .DESCRIPTION CIS - Public log 16384 KB minimum. .NOTES Filename: firewall-public-log-size.ps1|Author: Nederlandse Baseline voor Veilige Cloud|NetSH: Public LogMaxSizeKilobytes|Expected: 16384 #> #Requires -Version 5.1 #Requires -RunAsAdministrator [CmdletBinding()]param([switch]$WhatIf, [switch]$Monitoring, [switch]$Remediation, [switch]$Revert) $ErrorActionPreference = 'Stop'; $Profile = "Public"; $MinSize = 16384 function Connect-RequiredServices { $p = New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent()); return $p.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator) } function Test-Compliance { $r = [PSCustomObject]@{ScriptName = "firewall-public-log-size.ps1"; PolicyName = "Firewall Public Log Size"; IsCompliant = $false; CurrentValue = $null; ExpectedValue = "$MinSize KB+"; Details = @() }; function Invoke-Revert { Set-NetFirewallProfile -Name $Profile -LogMaxSizeKilobytes 4096 } try { $fw = Get-NetFirewallProfile -Name $Profile -ErrorAction SilentlyContinue; if ($fw) { $r.CurrentValue = "$($fw.LogMaxSizeKilobytes) KB"; if ($fw.LogMaxSizeKilobytes -ge $MinSize) { $r.IsCompliant = $true; $r.Details += "Log size OK" }else { $r.Details += "Log size: $($fw.LogMaxSizeKilobytes) KB" } }else { $r.Details += "Profile niet gevonden" } }catch { $r.Details += "Error: $($_.Exception.Message)" }; return $r } function Invoke-Remediation { Set-NetFirewallProfile -Name $Profile -LogMaxSizeKilobytes $MinSize; Write-Host "Public log size: $MinSize KB" -ForegroundColor Green } function Invoke-Monitoring { $r = Test-Compliance; Write-Host "`n$($r.PolicyName): $(if($r.IsCompliant){'COMPLIANT'}else{'NON-COMPLIANT'})" -ForegroundColor $(if ($r.IsCompliant) { 'Green' }else { 'Red' }); return $r } function Invoke-Revert { Set-NetFirewallProfile -Name $Profile -LogMaxSizeKilobytes 4096 } try { if (-not(Connect-RequiredServices)) { exit 1 }; if ($Monitoring) { $r = Invoke-Monitoring; exit $(if ($r.IsCompliant) { 0 }else { 1 }) }elseif ($Remediation) { if (-not $WhatIf) { Invoke-Remediation } }elseif ($Revert) { Invoke-Revert }else { $r = Test-Compliance; exit $(if ($r.IsCompliant) { 0 }else { 1 }) } }catch { Write-Error $_; exit 1 }

Risico zonder implementatie

Risico zonder implementatie
High: No auth tracking.

Management Samenvatting

Schakel in audit logging.