Can't connect to your equipment by a certain protocol even though the service that uses that port is running? Check to see what ports are open and externally accessible
Use an online tool to scan your domain or IP for open ports, like this one: http://www.ipfingerprints.com/portscan.php
Download a desktop tool, such as nmap: http://nmap.org/
TCP / UDP ports and common uses: http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers
NOTE: Datacate does not close any ports upstream from your equipment unless you have managed firewall service from us and have explicitly requested that we do so. Otherwise, if a port is closed, it's due to the configuration of your own equipment.