Wintix uses port 3306 for MySQL. That’s it. If you have a firewall installed (like the Windows firewall), you need to make sure this port is open. If you are going to send email from Wintix, you also need port 25 open.
Webtix is a little different. You need:
22 (for SSH)
443 (SSL – the little lock on the bottom of your screen)