I think I may have a similar issue. I have DCS-93x cameras at a remote site and use a DDNS service on my DIR-826L router to access. As my local power is (at best) erratic, I decided to set DHCP IP reservations on the DIR-826L for each camera and assigned a port, then set the same reserved IP and port on the corresponding camera. I can see the cameras when inside the network (even when using Just Connect and the DDNS service IP), but can not see them from outside using either the DDNS service or the actual site IP address. However, I can access the router from outside and even did a reboot, but still no luck. Since I'm 260 miles away I would like to resolve this without a two day trip. Is this the same problem with the same resolution?
Thanks for any help you can give. Gas still ain't that cheap.