Currently Being ModeratedFeb 7, 2013 10:38 AM (in response to Joel C.)
Chances are that the Honeywell software used to communicate with Lynx 5100 security system requires UPnP in order to control ports on the router. The AirPort routers do not support this protocol. However, they have something similar called NAT-PMP. My guess on why Honeywell does not include the AirPorts is because of this.
If I am right, the issue would be that the software would not be able to communicate back to the remote security server as it wouldn't be able to open the appropriate ports to do so. One possible workaround is to manually configure the required ports using the Port Mapping feature of the AirPort Utility.
Currently Being ModeratedFeb 7, 2013 2:58 PM (in response to Tesserax)
Thanks Tesserax. Not really sure whether or not it uses UPnP. I'd hope it doesn't because UPnP is rather insecure. Problem is these alarm systems aren't really for the DIY'er so there's little documentation or even discussion out there. I did speak with the vendor today and he said while he has no first hand knowledge he didn't see where there'd be a problem. We shall see.
Currently Being ModeratedFeb 25, 2013 1:25 PM (in response to Joel C.)
Sorry I haven't gotten back to this subject. Kind of forgot about it. Anyway thought I'd answer my own question. This thread comes up first if you search "Airport Extreme Honeywell Lynx 5100" so it might help others wanting to know the same question.
Anyway to answer the question it DOES indeed work just fine. Connected right up. You do need to have either WPA or WPA2 enabled on the router (which you should anyway).