INetFwV6Connection::OpenPort 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 OpenPort method modifies the firewall configuration for a given connection to allow inbound connection attempts for the specified port and protocol pair. It is not an error to call OpenPort for a port and protocol pair that is already open, even though such a call has no actual effect on the system.
This is a state-changing method, and is subject to the access control and confirmation UI mechanisms.
Syntax
HRESULT OpenPort(
[in] USHORT usPort,
[in] PORT_PROTOCOL Protocol,
[in] BSTR bstrName
);
Parameters
-
usPort [in]
-
Specified in host byte order, and must be in the range 1 65535.
-
Protocol [in]
-
Specifies a value defined in the PORT_PROTOCOL enumeration.
-
bstrName [in]
-
Specifies the port name for information only. See Remarks section for further explanation.
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. |
|
One of the parameters is invalid. |
|
A specified interface is not supported. |
|
A specified method is not implemented. |
|
The method was unable to allocate required memory. |
|
A pointer passed as a parameter is not valid. |
|
The method failed for unknown reasons. |
Remarks
The bstrName parameter is for information purposes only, and has no bearing on the operation of the system. Different connections are not required to have the same name for identical port and protocol pairs. Calling OpenPort for a port and protocol pair that is already open using a different name does not alter the persisted name.
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 |
|