Go to the WAF configuration page.
Select the "SSL" tab.

It is the same as HTTP

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Enable the "SSL decryption" option to allow the WAF to decrypt and scan the HTTPS traffic

Enter the required SSL certificate information, such as the certificate authority (CA) information, domain name, and other relevant details.

To configure SSL with a Web Application Firewall (WAF), you need to make sure that your WAF is capable of handling HTTPS traffic. If your WAF is only showing HTTP as an option, it's possible that the WAF is not configured correctly, or it may not support SSL traffic.

Assuming that your WAF does support SSL traffic, here are some steps you can take to configure SSL with your WAF:

Configure your web server to use HTTPS: Before you can configure SSL with your WAF, you need to make sure that your web server is configured to use HTTPS. You will need to obtain an SSL/TLS certificate and configure your web server to use it.

Configure your WAF to handle HTTPS traffic: Once your web server is configured to use HTTPS, you need to configure your WAF to handle HTTPS traffic. This typically involves configuring the WAF to listen for HTTPS traffic on a specific port, such as port 443.

Enable SSL/TLS inspection: To scan HTTPS traffic, your WAF needs to be able to decrypt the traffic, inspect it for threats, and then re-encrypt it before sending it to the web server. This process is known as SSL/TLS inspection. You will need to configure your WAF to perform SSL/TLS inspection for HTTPS traffic.

Test your configuration: Once you have configured your WAF to handle HTTPS traffic and enabled SSL/TLS inspection, you should test your configuration to ensure that everything is working correctly. You can do this by sending HTTPS traffic to your web server and verifying that the WAF is scanning the traffic and blocking any malicious requests.

Keep in mind that SSL/TLS inspection can introduce performance overhead, so you should monitor the performance of your WAF to ensure that it is not impacting the performance of your web server.