INetFwV6Mgr::CloseGlobalPort method
[The IPv6 Internet Connection Firewall is available for use in the operating systems specified in the Requirements section. Instead, use the Windows Firewall API.]
The CloseGlobalPort method modifies the global firewall configuration to disallow inbound connection attempts for the specified port and protocol.
Syntax
HRESULT CloseGlobalPort(
[in] USHORT usPort,
[in] PORT_PROTOCOL Protocol
);
Parameters
-
usPort [in]
-
Defines port ID, in host byte order. Must be in the range 1 65535.
-
Protocol [in]
-
Defines protocol type.
Return value
If the method succeeds the return value is S_OK.
If the method fails, the return value is one of the following error codes.
| Return code | Description |
|---|---|
|
The operation was aborted. |
|
An unspecified error occurred. |
|
The parameter is invalid. |
|
A specified interface is not supported. |
|
A specified method is not implemented. |
|
The method is unable to allocate required memory. |
|
The method failed for unknown reasons. |
Remarks
It is not an error to call CloseGlobalPort for a port and protocol pair that is already closed, (for example, a pair for which IsPortGloballyOpen returns VARIANT_FALSE), even though such a call has no actual effect on the system.
Calling CloseGlobalPort does not guarantee that inbound connection attempts are denied for the specified port and protocol as there can exist connections for which that port and protocol has been explicitly opened.
Requirements
| Minimum supported client |
Windows XP with SP1 [desktop apps only] |
| Minimum supported server |
None supported |
| End of client support |
Windows XP with SP1 |
| Redistributable |
Advanced Networking Pack for Windows XP |
| Header |
|
| DLL |
|