When you add a website to your Web Application Firewall (WAF) instance in CNAME record mode, you must specify the HTTP or HTTPS ports that the website uses. After you specify the ports and add the website, traffic destined for the website is redirected to WAF for detection and protection.
Background information
WAF protects services that use standard ports or non-standard ports. The number of ports that are supported and the range of non-standard ports that are supported by a WAF instance vary based on the WAF edition that is used. For more information, see Ports supported by each WAF edition.
Scenarios
You must specify HTTP or HTTPS ports in the following scenarios:
- A website is added to WAF in CNAME record mode.
- The HTTP or HTTPS ports that the website uses change.