Is it possible to open ports with a non-static IP address?

Question

Computer networks

Hello, I wanted to ask if I have a dynamic ip address, can I open ports?

Answer 1

Yes

Answer 2

And what is the connection? of course it is possible.
Another question is how external clients will find out the address they need at the current time ... although there are dynamic DNS services for this. Provided that your external address is Internet routable (white), of course.