Hi,
I'm afraid that we do not have an installation of Fedora core here but in past experience this has been down to a firewall on the system.
Have you got a firewall on the system that you are able to turn off just to test if it is? I would recommend trying this, and if you find that this is the cause then permit LabVIEW access on all ports to prevent anything similar from happening again.
I hope this helps,
LeeM
NIUK