I'm having the same problem, Truvision NVR for cameras inside our office network. Within the last 3-4 months we are no longer able to access these cameras over the internet from outside our office (LTE, Home Internet, Public Wifi). Port 554 (RTSP) seems to not be passing. The NVR requires port 80, 8000 and 554 to be forwarded from the internet and we have not changed this in years. I set up a second router with OpenWRT on another IP in our static block from the ISP and moved the NVR to that and it worked great. Something is definitely wrong with the Meraki router in this situation. ... View more