Here is a great tool to use to check ports that are open after you have done your port forwarding. Some ports may be closed by the internet provider 1) Go to www.canyouseeme.org and type in the port number on the field 2) If the port number are opened on your service and is not blocking by your ISP, the result should be showed "Success". 3) If the port number are not opened on your service and is blocking by your ISP, the result should be showed "Error".