Im familiar with using a DDNS service like dyn or noip.com to map a "static" memorable address to a dynamic IP address, which allows you to access a router / device for VPN, viewign CCTV etc. If that locaiton only has a dynamic IP.
But am i able to use a DDNS service in reverse if another service im connecting to requires me to have a static IP as part of it authentication process.
Eg. some web servers can have a lock on the FTP login that not only requires a username and password, but also requires you to be logging in from a select IP (or range of IPs).
But if you have a dynamic public IP address is there a way you can use a DDNS service to give / mask your dynamic public IP address a "static" address so that services can see you are connecting from a pre approved connection address ?