Need help with port forwarding

[FreQUENCY]

Hello!, I am playing with my little backdoor in my VM kali machine,and a tool that i use(ahmyth) requires a port to work. I enter the port,i pass the APK to my phone but it wont work..I saw it needs to be port forwarded. I have never done this before. This is my Port forwarding router page. Any ideas? 

[beersykins]

You should be able to define nothing as source IP, or you can use something like 0.0.0.0/0 if it complains.

 

Port range is your outside port, I'd just throw in the port you need in both that box and the local port.  Local IP is the LAN address of your Kali VM.