What Do I Do If the Protocol Is Not Supported and the Client and Server Do Not Support Common SSL Protocol Versions or Cipher Suites?
Symptom
After a domain name is connected to WAF, the website cannot be accessed. A message is displayed, indicating that the protocol is not supported. The client and server do not support common SSL protocol versions or cipher suites.
Solution
Select the default cipher suite for Cipher Suite in the TLS Configuration dialog box. For details, see Configuring PCI DSS/3DS Certification Check and TLS Version.
![Click to enlarge](https://support.huaweicloud.com/intl/en-us/waf_faq/en-us_image_0000001739688548.png)
Troubleshooting Certificate and Cipher Suite Issues FAQs
- How Do I Fix an Incomplete Certificate Chain?
- Why Does My Certificate Not Match the Key?
- Why Are HTTPS Requests Denied on Some Mobile Phones?
- What Do I Do If the Protocol Is Not Supported and the Client and Server Do Not Support Common SSL Protocol Versions or Cipher Suites?
- Why Is the Bar Mitzvah Attack on SSL/TLS Detected?
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