IPVMU Certified | 03/30/16 08:06pm
Have you tried using one of the Samsung free DNS services rather then doing IP address?
IPVMU Certified | 04/01/16 10:59am
Good catch, I did mean the ddns service- Samsung has some pre set up in some of the DVR/NVR solutions I've seen in the past. Theoretically it should work no better, but using the pre set up service from Samsung I've had good success when other routes were intermittently bad
Check your router and port forwarding rules in relationship to NVR hopefully not running DHCP? Who setup machine is there a second router behind modem? Port 80 should be open or any other ports you opened for phone app etc. Are you testing with a port checker tool onsite and or remotely when you run into this issue? I just had a machine using Windows 10 I had to go to "compatibility view" and add IP address with IE. Using DDNS is preferred method now days. Have any screen shots of setup and what does Samsung tell you have you spoken with tech support?
Pro Focus LLC | 04/02/16 02:16am
Yes, it is very possibly a bad router or bad firmware on the router. I have seen a very similar issue with a Cisco/Linksys RV100W router that had defective firmware that took years for Cisco to resolve. That particular router needed rebooted weekly to maintain open firewall ports.
I had opened port 4000,80,81,554-558(TCP/UDP) , 4520-4524(TCP).
i should see by Swap a new router
Does the firmware up gradation of the router will help ??
I do not want to go with DDNS because customer is paying money for STATIC IP.
IPVMU Certified | 04/02/16 09:03pm
I'd lean towards the router. I think the key is you need to reboot it to regain connectivity. I like others also suspect it is a firmware issue. Try upgrading the firmware or a different router that is known to work properly.