Well, if you use uPNP you let Tablo take care of it and do not set anything up. If you had port forwarding setup then remove that and try what I suggested again. Turn it off, turn it on and then try to turn it on again on the Tablo. It should take care of it…
I found the router not to work the way you think it should via upnp
But, here is a screen shot of how the one I did looks after uPNP took care of the ports
