How is this possible, WiFi on different net sees my rendezvous iMac ??

[michaelsanford]

I'm currently 250 km away from my iMac which has ARD open on the NAT to the WAN.

I just logged into a WiFi network (the one that changes my HOST parameter) and now I see my iMac listed in blue on ARD as it would be if I were on my LAN with it. I see the currently logged in user, application, and status. How is this possible ?!

(Normally it has shown my iMac remotely as a black icon until I connect to it, even then it stays black and doesn't give me any status information). I have two instances of my iMac in the list, one from the Scanner as determined from Rendezvous, the other manually input as my no-ip.com hostname.

Oh yes and my Rendezvous entry in the main list has disappeared and it shows only the remote-style one, with the correct Rendezvous name, which it usually doesn't ever do (it usually keeps the name I give it even once connected).

I suppose it's possible that this information is normally available but that my (poor quality) router in this city blocks it somehow, and that this WiFi router is more liberally configured and allows the status information to pass through ?

 

[michaelsanford]

I have an update for this.

I went back to my usual connection point (parent's house), turned off the firewall on the NAT and put myself in a DMZ. After that the functionality is identical to my WiFi connection.

Seems my firewall has been blocking part of ARD after all, false alarm !