Embedding the Prospective page in website using iframe

Hi,
Can you help me to do this.

Do you have access to your local DNS? Typically you'd get your IT department to assign the IP address to someGatewayName.local or someGatewayName.someCompany.com and help you generate a certificate for you with that name. Then you would use that name everywhere instead of the IP address.

In my own infrastructure, I have either my managed switch/router do it, or use dnsmasq in isolated VLANs.