DnsCacheNegativeTtl Property of the IFPCLowLevelSettings Interface
The DnsCacheNegativeTtl property gets or sets the TTL, in seconds, of entries for unsuccessful lookups in the DNS cache.
C++
HRESULT put_DnsCacheNegativeTtl(
long lTTL
);
HRESULT get_DnsCacheNegativeTtl(
long* plTTL
);
Parameters
lTTL
A 32-bit integer that specifies the TTL, in seconds, of entries for unsuccessful lookups in the DNS cache.plTTL
Pointer to a variable that on return receives a 32-bit integer specifying the TTL, in seconds, of entries for unsuccessful lookups in the DNS cache.
Return Value
These property methods return S_OK if the call is successful; otherwise, they return an error code.
Visual Basic
Property DnsCacheNegativeTtl As Long
Property Value
A 32-bit integer that specifies the TTL, in seconds, of entries for unsuccessful lookups in the DNS cache.
Remarks
This property is read/write. Its default value is 300 seconds (5 minutes).
After the value of this property has been modified, the change must be written to persistent storage by calling the Save method on an object containing FPCLowLevelSettings as a subobject, and the Microsoft Firewall service must be restarted for the change to take effect. For more information about restarting the Firewall service to apply changes, see Restarting Services After Configuration Changes.
This property cannot be accessed through Forefront TMG Management.
Requirements
Client | Requires Windows 7 or Windows Vista. |
Server | Requires Windows Server 2008 R2 or Windows Server 2008 x64 Edition with SP2. |
Version | Requires Forefront Threat Management Gateway (TMG) 2010. |
IDL | Declared in Msfpccom.idl. |
DLL | Requires Msfpccom.dll. |
See Also
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Build date: 6/30/2010