Windows Defender Firewall: impedisci risposte unicast a richieste multicast o broadcast: valore del Registro di sistema DisableUnicastResponsesToMulticastBroadcast (StandardProfile)ComputerHKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile

ID criterio: WF_UnicastResponseToMulticast_Name_2
Ambito: Configurazione computer
Supportato in: Almeno Windows XP Professional con SP2
Origine: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (versione 1.0)
Categoria: Rete › Connessioni di rete › Windows Defender Firewall › Profilo standard

Registro

DisableUnicastResponsesToMulticastBroadcast

REG_DWORDComputer

HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile Chiave corrente

Valore abilitato: 1
Valore disabilitato: 0

Applica con .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile]

; Opzioni (usarne solo una)
; Abilitato
"DisableUnicastResponsesToMulticastBroadcast"=dword:00000001
; Disabilitato
"DisableUnicastResponsesToMulticastBroadcast"=dword:00000000

CMD

:: Opzioni (usarne solo una)

:: Abilitato
reg add "HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile" /v "DisableUnicastResponsesToMulticastBroadcast" /t REG_DWORD /d 1 /f
:: Disabilitato
reg add "HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile" /v "DisableUnicastResponsesToMulticastBroadcast" /t REG_DWORD /d 0 /f

PowerShell

# Comune: crea la chiave
New-Item -Path 'HKLM:\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile' -Force | Out-Null

# Opzioni (usarne solo una)
# Abilitato
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile' -Name 'DisableUnicastResponsesToMulticastBroadcast' -PropertyType DWord -Value 1 -Force | Out-Null
# Disabilitato
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile' -Name 'DisableUnicastResponsesToMulticastBroadcast' -PropertyType DWord -Value 0 -Force | Out-Null