At work we have a DDNS server, a web server, and a switch with a dozen PCs connected to it. I'd like to set up the DDNS server on its own subnet (192.168.5.x), the web server on (192.168.10.x), and ...

The first step to correctly answering whether you can change NAT settings without logging into the router is knowing exactly what NAT is and how it works. Then can you figure out how to change NAT ...