VI Server problem

[Greg Vowles]

I am trying to setup a client and master vi on different machines. The Client VIs are setup on remote machines behind a router where the I.P. address is
XXX.XXX.XXX.XXX:102
XXX.XXX.XXX.XXX:103
etc...
where the Master controller VI will be setup on a machine with a "normal" I.P address - outside the router. When I try to access these remote machines I get the error:
Error 54 occurred at Open Application Reference in Master.vi
Possible reason(s):
LabVIEW: The network address is ill-formed.

There are 4 machines behind a router that then creates the different I.P.'s such as the XXX.XXX.XXX.XXX:102,
the router can be accessed just by the regular XXX.XXX.XXX.XXX I.P address.

Can I use VI server when the different machines are behind a rou
ter? If so how do I address them? When I run the Master VI on a machine on the same side of the router (i.e. XXX.XXX.XXX.XXX:101) I get no errors because from the other side of the router each machine has there own "normal" I.P. address. I really need to set up the Master VI from outside the router however because its on a laptop.

Sorry for the long questions - I hope I made my questions clear. I appreciate any/all the help I can get. Thanks in advance - I really appreciate it!
Greg

[jcase]

Assuming the router has been set up properly to do Network Address Translation (NAT) and port forwarding, it sounds like you might be passing �XXX.XXX.XXX.XXX:102� into the Open Application Reference for the machine name. You should be passing �XXX.XXX.XXX.XXX� for the machine name and �102� for the port. Trying to bundle the port into the machine name would cause error 54.

[JaredA]

Hey Greg,

Are you able to ping the other machines from your master computer? Also, is there a way that you can disable any possible firewall that may exist by having that router?

Try running this Remote VI Status Monitor example.

Final idea for now, anyway of trying out different port numbers for the client computers on the other side of the firewall?