| IPortMapping Properties | 
The IPortMapping type exposes the following members.
| Name | Description | |
|---|---|---|
| Description | 
            Gets the description that the router holds for this port mapping.
              | |
| ExternalPort | 
            Gets the Internet-facing port number that the router will allow from the Internet onto the LAN.
              | |
| InternalClient | 
            Gets the address of the machine on the LAN that the UPnP router will forward packets to.
              | |
| InternalPort | 
            Gets the port number of the machine at InternalClient that the UPnP router will forward packets to.
              | |
| Protocol | 
            Gets the protocol of the packets that this port mapping is for.
              |