B4J Question Can an app access url:portnumber without user interaction (e.g. firewall customization)?

[fredo]

The use case
An app effectively accesses a database on a Hetzner VPS server via B4J server as described in Erel's and @aeric's examples:
https://www.b4x.com/android/forum/threads/b4x-cloudkvs-synchronized-key-value-store.63536/ and
https://www.b4x.com/android/forum/t...l-firebird-postgresql-dbf.147542/#post-962505.

The projects have been implemented successfully and run without errors.
Users can access the database from a PC or mobile device using the URL and port number.

The question
Adjusting the firewall settings is straightforward for developers, but requires an unreasonable level of technical understanding for average users.

Is it possible to design the configuration of the application in such a way that the user does not have to make any firewall adjustments manually?

 

[EnriqueGonzalez]

Is it possible to design the configuration of the application in such a way that the user does not have to make any firewall adjustments manually?

If you use a common port say 80 or 443 then yes user won't need to do anything firewall wise