Setting up HTTPS for an IP address involves securing communication to a server directly accessed via its IP address, rather than a domain name. This process requires obtaining and installing an SSL/TLS certificate specifically issued for that IP address.
Steps to set up HTTPS for an IP address:

   Obtain an SSL/TLS Certificate for the IP Address:
       Unlike domain-validated (DV) certificates, which are common for websites, certificates for IP addresses typically require Organization Validated (OV) or Extended Validation (EV) certificates.
       The Certificate Authority (CA) will need to verify ownership of the IP address, which may involve demonstrating control over the IP or working with your Internet Service Provider (ISP).
       During the certificate request process, the IP address must be specified in the order application.
   Install the Certificate on the Server:
       Once the certificate is issued, it needs to be installed on the web server (e.g., Apache, Nginx, IIS) that is hosting the service on the IP address.
       This involves configuring the web server software to use the installed certificate and its corresponding private key for SSL/TLS connections. The specific configuration steps will vary depending on the web server software being used.
   Configure the Web Server for HTTPS:
       Enable SSL/TLS on the server's listening port (typically 443).
       Specify the paths to the installed certificate file and its private key file in the server's configuration.
       (Optional but recommended) Configure the server to redirect HTTP traffic (port 80) to HTTPS (port 443) to ensure all connections are secure.

Important Considerations:

   Self-Signed Certificates:
   For local network access or testing purposes, a self-signed certificate can be generated and used. However, these certificates are not trusted by default by browsers and will result in security warnings.
   Domain Names vs. IP Addresses:
   While technically possible to secure an IP address with HTTPS, using a domain name with a valid SSL/TLS certificate is generally preferred for better security, user experience, and easier certificate management (e.g., with services like Let's Encrypt).