INetFwProfile::UnicastResponsesToMulticastBroadcastDisabled property

[The Windows Firewall API is available for use in the operating systems specified in the Requirements section. It may be altered or unavailable in subsequent versions. For Windows Vista and later, use of the Windows Firewall with Advanced Security API is recommended.]

Indicates whether the firewall should not allow unicast responses to multicast and broadcast traffic.

This property is read/write.

Syntax


HRESULT put_UnicastResponsesToMulticastBroadcastDisabled(
  [in]  VARIANT_BOOL disabled
);

HRESULT get_UnicastResponsesToMulticastBroadcastDisabled(
  [out] VARIANT_BOOL *disabled
);

Property value

True if the firewall should not allow unicast responses to multicast and broadcast traffic.

Error codes

If the method succeeds, the return value is S_OK.

If the method fails, the return value is one of the following error codes.

NameMeaning
E_ACCESSDENIED

The operation was aborted due to permissions issues.

E_INVALIDARG

The method failed due to an invalid parameter.

E_OUTOFMEMORY

The method was unable to allocate required memory.

E_POINTER

The method failed due to an invalid pointer.

Remarks

If a PC sends a broadcast packet, a unicast response is allowed for three seconds. Use this property to change this behavior.

Requirements

Minimum supported client

Windows Vista, Windows XP with SP2 [desktop apps only]

Minimum supported server

Windows Server 2003 with SP1 [desktop apps only]

Header

Netfw.h

DLL

FirewallAPI.dll;
Hnetcfg.dll on Windows XP with SP2

See also

INetFwProfile

 

 

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