Programmatically determine if a cRIO is connected to your computer

I'm trying to programmatically determine if a specific cRIO is connected to my computer.  What is the best way of going about this (if I know the name and the IP Address)?  The closest I've come is getting a system sessions constant that is a dropdown of all that are connected to the computer, but I can't find a way to access all of the values in the dropdown (only the one that is selected).
Thanks, Emily
LV2012, Win7, 64-bit

Emily101 wrote:
No, I can't disable the firewall and don't have any control over it... This is a separate issue that other people within my company have been working with our IT department and NI on.  I can see it in MAX if I manually add the IP Address but MAX doesn't automatically discover it. 
I found another way of detecting if it's connected using shared variables, but if anyone knows of another way to do it in LV2012, I would still be interested in hearing about it.
If MAX doesn't see it, then it is most likely a firewall issue. I believe the way Max discovers controllers is by reading UDP messages the controllers broadcast. If the firewall is blocking it, then you wont' be able to see it. I have run into this at some of our customers sites, although I can't remember exactly what we did to check. I think we were able to ping them still, so we just pinged but didn't look for the controller name specifically, as you are trying to do.
CLA, LabVIEW Versions 2010-2013

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