Any port to be open to work with Android for a self hosted instance

Install / Update Setup
1

Hello, I was trying to log in with the android app pointin it to the server IP, in the past this have been working fine with an Centos7 instance, now I have moved to Ubuntu and I can not loggin, so I guess that maybe Ubuntu is closing a port that was open in Centos7, Am I rigth? Or are there any aditional setup to get the mobile app working?

Regards

2

re open ports this may help Can not access self hosted server from Erpnext mobile application - #18 by Jason_Lin