What is the name of the domain?
homeassistant.van.keaton.one
What is the error number?
ERR_SSL_VERSION_OR_CIPHER_MISMATCH
What is the error message?
This site can’t provide a secure connection. homeassistant.van.keaton.one uses an unsupported protocol.
What is the issue you’re encountering
Cloudflare Tunnel shows healthy status but SSL handshake fails when accessing the domain, despite DNS resolving correctly to Cloudflare IPs.
What steps have you taken to resolve the issue?
Configured DNS with proxied A and CNAME records
Tested all SSL/TLS modes (Flexible, Full, Full Strict)
Adjusted TLS versions and cipher settings
Verified no Access policies
Tested in multiple browsers/private mode
Enabled debug logging
What are the steps to reproduce the issue?
DNS resolves to Cloudflare IPs
Access https://homeassistant.van.keaton.one
Browser immediately returns SSL handshake error
Tunnel remains healthy in dashboard