NATUPNPLib.UPnPNAT upnpnat = new NATUPNPLib.UPnPNAT();
NATUPNPLib.IStaticPortMappingCollection mappings = upnpnat.StaticPortMappingCollection;
mappings.Add(1337, "TCP", 1337, "192.168.1.102", true, "Local Web Server");
mappings.Add(1337, "UDP", 1337, "192.168.1.102", true, "Local Web Server");