IOGear GMFPSU22W6 - Manual (Page 16)

6 7
If you have a software firewall you may be
alerted that the Control Center is being blocked.
Make sure that you unblock the Control Center
or you may experience difficulty using your
server. If you need to manually configure your
firewall, make sure the following ports are open
for both TCP and UDP: 7303, 7305, 20005,
020, 0202, and 020.