The ports Omega uses in version 2.1.0 and later are:
8022 for SSH
8080 for HTTP
8443 for HTTPS
59000 for VNC (remote control application in Omega Administrator)
In "firewall" mode, the above ports are captured by the Omega while all the other ports are redirected to the PRINT Ethernet port (USB-Eth adapter).
In "hub" mode the omega also exposes:
6000 - X11 server
30450 - picogui server
These ports are the internal servers used by the station application on the Omega and do not need to be accessed by other network clients.