sudo ufw status

UFW STATUS
--------------

Shows you the status of your firewall and what ports are being allow from where.  Below you see the L0 and L1 ports are opened and SSH.  Please remember that you have Ubuntu OS firewall rules and then you have cloud based rules you should look into.

#sudo ufw status

Status: active

To                         Action      From
--                         ------      ----
22/tcp                     ALLOW       Anywhere
9000/tcp                   ALLOW       Anywhere
9001/tcp                   ALLOW       Anywhere
9010/tcp                   ALLOW       Anywhere
9011/tcp                   ALLOW       Anywhere