Help Center/ Web Application Firewall/ User Guide (ME-Abu Dhabi Region) / FAQs/ Service Interruption Check/ 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?

Updated on 2024-03-14 GMT+08:00

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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.

Figure 1 TLS Configuration
Click to enlarge

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Parent topic: Service Interruption Check

Previous topic: Why Am I Seeing Error Code 414 Request-URI Too Large?

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