I have exactly the same problem with port forwarding port 21 is only possible if the USB stick plugging! Otherwise, all ports are closed! Greetings from Germany

Region : Germany Model : TL-WDR4300 Hardware Version : V1 Firmware Version : ISP : Primacom Hi folks, I have the following problem with my router WDR3600. I would like to access via FTP to my Nas...