How to change the ssh port on the server and successfully connect to it?

Question

SSH

Changed the port from 22 to 2233 in sshd_config, saved the file, restarted ssh - sudo service ssh restart,
using the ss -nlput | grep sshd checked that the port is correct, I try to connect to a server with a new port like ssh -p 2233 [email protected] and writes that connection refused, I change it back to 22 and everything works again, I already added 2233 to iptables, I also added it to authorized_keys public key from local computer, what didn't I do?

Answer 1

just in case, write two ports in sshd_config
... so that at least one can be reached , it
is written directly under each other
Port 22
Port 2233