So my question is much like this one, Port scan revealed port 1111 open. What is it?, but I wasn't able to investigate with the same techniques suggested here, because the device runs busybox. for ...
telnet 220.127.116.11 33491 Trying 18.104.22.168... Connected to 22.214.171.124.. Escape character is '^]' ^] telnet> close Connection closed. As you can see, the above telnet command shows port 33491 is ...