Networks

If locally, you don't need a DDNS hostname. Just use the IP or create a bookmark for the IP.

Do you need a DMZ? If so, the instructions come in the router documentation. If the router came from an ISP, it may have different firmware from the vendor default. If you don't have the docs, get them from Thomson or the ISP, whichever is responsible. Make sure you get the right docs for your firmware revision.

But, it is best to just follow the remote viewing instructions and software installation for the security cam itself. The documentation should walk you through whatever you need to do, including any router configuration like port forwarding.