Hello byzantium and welcome,
First, if you are using a Comcast Static IP Address (CSIA) , then you should have simply logged into the DPC3939B user interface. go to Advanced, then click on port management and simply open the ports on the staticIP device address. If you are not using a CSIA, then you MUST make sure that you are NOT using one of the DHCP Server Dynamic Addresses (DSDA) between 10.1.10.2 through like 10.1.10.252. This is due to the Camera Server (CS) DSDA typically change every time the its DSDA expires. Therefore, you would need to change the DSDA start address from 10.1.10.2 to 10.1.10.10. This will provide you with non-changing 10.1.10.2 through 10.1.10.9 DHCP address to force feed its use for your CS and ONLY your CS. If you make any changes to you CS IP address, then go back into Advanced.Port Forwardinng and edit the IP address of the device you opened the ports originally on.
Lastly, it is MANDATORY that your CS is directly connected via ethernet cable to one of the LanPorts 1-4 on the back of the DPC3939B. If you follow the above afrorementioned recommendations I have provided, your remote access to your CS should always be available.
Hope this helps you out.
Wow - that's great advice. Would never have realized that and NO ONE I talked to at comcast even approached knowing that. I made those changes and assigned CS to 10.1.10.2 and made the necessary updates to assigned IP and port forwarding in the router. I will try it out later. Thanks again.
I'm just guessing, but they probably did know and just didn't see how it could possibly fit in with your description of the problem. It would be pretty strange for an addressing problem to show itself on a consistent day/night scehdule. If the address changes didn't fix it... what happens on the weekends?
After these changes the same problem persists...I can still can only externally access the camera during the day. It simply times out at night. Using a port check too confirms that the port is closed. I can get a ping reply but the port itself is shut down. Perhaps I should try some different port numbers?
Port check done at 9am
Port check done at 9pm