FAQ

Type

Questions

Product FAQ

• Pay-as-you-go issues

  • Pay-as-you-go (Legacy) FAQ

  • Pay-as-you-go 2.0 FAQ

• Website configuration issues

  • Can I use both transparent proxy mode and CNAME access mode for the same domain name?

  • How do I disable WAF traffic forwarding and protection for a domain in transparent proxy mode?

  • Can the origin server obtain the client's real IP after I enable transparent proxy mode?

  • After I update the certificate bound to a port, do I need to re-upload the certificate to WAF?

  • How do I enable transparent proxy mode if the same domain name is configured on multiple SLB instances?

  • What happens if I enable transparent proxy mode for only one of several domain names configured on an SLB instance?

  • Why can't I find the Layer 7 SLB instance I want to add when I enable transparent proxy mode?

Website access issues

• Website access errors

• HTTPS access issues

• Resolving HTTPS errors (untrusted server certificate) due to SNI incompatibility

• Handling a compromised WAF-protected ECS origin server

• How do I resolve a WAF blackhole?

Product configuration

• Supported domain suffixes

• Do unconfigured ports of a website added to WAF pose a security risk to the origin server?

• WAF traffic flow diagram

• CC protection emergency mode

• Troubleshooting 405 status code errors

Troubleshooting

• Why can't I add a service that uses a non-standard port to WAF Premium?

• Why am I getting the 'Invalid private key format' error when uploading an HTTPS certificate?

• Resolving certificate and private key mismatches

• Why does WAF block file upload requests?

• How do I resolve lost login sessions?

• Resolving persistent connection timeout issues

• Why can't I access my mini program after configuring WAF?

• Why can't some clients access my website after I configure WAF?

Services

• Alibaba Cloud DNS versions

General Information

• Common web vulnerabilities explained

• Why can't I directly access the CNAME record generated by WAF?