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Cloudflare DNS with Malware blocking + DoH #19

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Cloudflare DNS with Malware blocking + DoH #19

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ba402bf
Update DNS.bat
Blixxky Sep 12, 2025
6cd7abe
Update DNS.ps1
Blixxky Sep 12, 2025
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17 changes: 13 additions & 4 deletions DNS.bat
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Original file line number Diff line number Diff line change
Expand Up @@ -48,13 +48,22 @@ rem # Enable Cloudflare DNS
rem # Disable DNS UDP Fallback
rem # Disable Auto-Upgrade (Dynamic DNS / DDNS)
rem # V3nilla: https://github.com/shoober420/windows11-scripts/issues/11
netsh interface ip set dns Wi-Fi static 1.1.1.1
netsh interface ip set dns Ethernet static 1.1.1.1
netsh dns add encryption server=1.1.1.1 https://cloudflare-dns.com/dns-query autoupgrade=no udpfallback=no

rem # Enable Cloudflare DNS with malware blocking and DOH
rem # Set primary DNS for Wi-Fi and Ethernet interfaces
netsh interface ip set dns Wi-Fi static 1.1.1.2
netsh interface ip set dns Ethernet static 1.1.1.2
netsh dns add encryption server=1.1.1.2 dohtemplate=https://security.cloudflare-dns.com/dns-query autoupgrade=no udpfallback=no

rem # Add secondary DNS for Wi-Fi and Ethernet interfaces
netsh interface ip add dns Wi-Fi 1.0.0.2 index=2
netsh interface ip add dns Ethernet 1.0.0.2 index=2
netsh dns add encryption server=1.0.0.2 dohtemplate=https://security.cloudflare-dns.com/dns-query autoupgrade=no udpfallback=no


rem # Enable DNS over HTTPS (DoH)
reg add "HKLM\SYSTEM\CurrentControlSet\Services\Dnscache\Parameters" /v "EnableAutoDoh" /t REG_DWORD /d "2" /f
reg add "HKLM\SYSTEM\CurrentControlSet\Services\Dnscache\Parameters" /v "EnableDoh" /t REG_DWORD /d "2" /f
rem netsh dns set global doh=force

PAUSE
PAUSE
71 changes: 64 additions & 7 deletions DNS.ps1
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Expand Up @@ -4,12 +4,69 @@
# Disable Auto-Upgrade (Dynamic DNS / DDNS)
# V3nilla: https://github.com/shoober420/windows11-scripts/issues/11

$i = Get-NetAdapter -Physical
$i | Get-DnsClientServerAddress -AddressFamily IPv4 | Set-DnsClientServerAddress -ServerAddresses '1.1.1.1' | Add-DnsClientDohServerAddress -ServerAddress 1.1.1.1 -DohTemplate https://cloudflare-dns.com/dns-query -AutoUpgrade $False -AllowFallbackToUdp $False
$i | ForEach-Object {
$s1 = 'HKLM:System\CurrentControlSet\Services\Dnscache\InterfaceSpecificParameters\' + $_.InterfaceGuid + '\DohInterfaceSettings\Doh\1.1.1.1'; New-Item -Path $s1 -Force | New-ItemProperty -Name "DohFlags" -Value 1 -PropertyType Qword
# $s2 = 'HKLM:System\CurrentControlSet\Services\Dnscache\InterfaceSpecificParameters\' + $_.InterfaceGuid + '\DohInterfaceSettings\Doh\1.0.0.1'; New-Item -Path $s2 -Force | New-ItemProperty -Name "DohFlags" -Value 1 -PropertyType Qword
# --- Configuration ---
$PrimaryDns = '1.1.1.2'
$SecondaryDns = '1.0.0.2'
$DohTemplate = 'https://security.cloudflare-dns.com/dns-query'

function Ensure-DohServer {
param (
[string]$ServerAddress,
[string]$Template
)
# Check if the DoH server is already registered system-wide
$existing = Get-DnsClientDohServerAddress -ErrorAction SilentlyContinue |
Where-Object { $_.ServerAddress -eq $ServerAddress }

if (-not $existing) {
try {
# Register the new DoH server
Add-DnsClientDohServerAddress -ServerAddress $ServerAddress `
-DohTemplate $Template -AllowFallbackToUdp $false -ErrorAction Stop
Write-Host " -> Registered DoH server $ServerAddress." -ForegroundColor Green
}
catch {
Write-Error "Failed to add DoH server $ServerAddress. Error: $($_.Exception.Message)"
}
}
else {
Write-Host " -> DoH server $ServerAddress already registered." -ForegroundColor Yellow
}
}

Write-Host "Configuring Cloudflare Malware-Blocking DNS with DoH..." -ForegroundColor Cyan

# 1. Register DoH servers for the system
Ensure-DohServer -ServerAddress $PrimaryDns -Template $DohTemplate
Ensure-DohServer -ServerAddress $SecondaryDns -Template $DohTemplate

# 2. Find all network adapters that are both physical and currently connected
$activeAdapters = Get-NetAdapter -Physical | Where-Object { $_.Status -eq 'Up' }
if (-not $activeAdapters) {
Write-Warning "No active physical network adapters found to configure."
Read-Host "Press Enter to exit."
return # Exit the script
}
Clear-DnsClientCache;

cmd /c 'pause'
Write-Host "`nFound $($activeAdapters.Count) active adapter(s). Applying settings..."

# 3. Configure each active adapter
foreach ($adapter in $activeAdapters) {
Write-Host " - Configuring '$($adapter.Name)'..."
try {
Set-DnsClientServerAddress -InterfaceIndex $adapter.InterfaceIndex `
-ServerAddresses @($PrimaryDns, $SecondaryDns) -ErrorAction Stop
Set-DnsClientInterface -InterfaceIndex $adapter.InterfaceIndex `
-DnsEncryption 'Require' -ErrorAction Stop
Write-Host " Successfully applied to '$($adapter.Name)'." -ForegroundColor Green
}
catch {
Write-Error "Failed on '$($adapter.Name)': $($_.Exception.Message)"
}
}

Write-Host "`nClearing DNS cache..."
Clear-DnsClientCache

Write-Host "`nConfiguration complete." -ForegroundColor Cyan
Read-Host "Press Enter to close this window."