/// <summary>
/// Checks to find whether the Windows XP/2003 Firewall is enabled on adapters and if so it opens ports.
/// </summary>
/// <param name="portMapName">Name of the Port Map to look for (must be the same as when it was added)</param>
/// <param name="port">Port Number</param>
/// <param name="protocolIsTcp">true if TCP, false if UDP</param>
/// <remarks>
/// WARNING: This method does not inform the user that the firewall punchthrough is being added. Applications
/// should always inform the user when adding punchthroughs to the firewall, for security reasons.
/// </remarks>
public static void RemoveOldFirewallPort(string portMapName, ushort port, ProtocolType protocol)
{
ValidateForOldCompatibleFirewall();
ValidateAdministrator();
byte protocolAsByte = ConvertAndValidateProtocol(protocol);
INetSharingManager mgr = new NetSharingManagerClass();
// Iterate through all of the available connections
foreach (INetConnection iCon in mgr.EnumEveryConnection)
{
INetSharingConfiguration iShareConfig = mgr.get_INetSharingConfigurationForINetConnection(iCon);
if (iShareConfig.InternetFirewallEnabled) // skip this connection if the firewall is disabled
{
foreach (INetSharingPortMapping portMap in iShareConfig.get_EnumPortMappings(tagSHARINGCONNECTION_ENUM_FLAGS.ICSSC_ENABLED))
{
// Remove this port mapping only if the name & port match
if ((ushort)(portMap.Properties.ExternalPort) == port && portMap.Properties.IPProtocol == protocolAsByte)
{
if (String.Compare(portMap.Properties.Name, portMapName) == 0)
{
iShareConfig.RemovePortMapping(portMap);
}
}
}
}
}
}
/// <summary>
/// Checks to find whether the Windows XP/2003 Firewall is enabled on adapters and if so it opens ports.
/// </summary>
/// <param name="portMapName">Name of the Port Map to look for</param>
/// <param name="port">Port Number</param>
/// <param name="protocolIsTcp">true if TCP, false if UDP</param>
/// <remarks>
/// WARNING: This method does not inform the user that the firewall punchthrough is being added. Applications
/// should always inform the user when adding punchthroughs to the firewall, for security reasons.
/// </remarks>
public static void AddOldFirewallPort(string portMapName, ushort port, ProtocolType protocol)
{
ValidateForOldCompatibleFirewall();
ValidateAdministrator();
// Get the protocolAsByte ICF constant
byte protocolAsByte = ConvertAndValidateProtocol(protocol);
INetSharingManager mgr = new NetSharingManagerClass();
// Iterate through all of the available connections
foreach (INetConnection iCon in mgr.EnumEveryConnection)
{
INetSharingConfiguration iShareConfig = mgr.get_INetSharingConfigurationForINetConnection(iCon);
if (iShareConfig.InternetFirewallEnabled) // skip this connection if the firewall is disabled
{
// Make sure that this firewall doesn't already have a port map for the same port
bool portMapExists = false;
foreach (INetSharingPortMapping portMap in iShareConfig.get_EnumPortMappings(tagSHARINGCONNECTION_ENUM_FLAGS.ICSSC_ENABLED))
{
if ((ushort)(portMap.Properties.ExternalPort) == port && portMap.Properties.IPProtocol == protocolAsByte)
{
portMapExists = true;
break;
}
}
if (!portMapExists)
{
// Finally, add & enable the new port map
INetSharingPortMapping newPortMap = iShareConfig.AddPortMapping(portMapName, protocolAsByte, port, port, 0, SystemInformation.ComputerName, tagICS_TARGETTYPE.ICSTT_NAME);
newPortMap.Enable();
}
}
}
}
