Cap the TLS protocol version used by curl.
Section: TLS and Certificates
Set maximum TLS version
bash
bash
curl --tls-max 1.3 https://example.comExplanation
Helpful for compatibility testing.
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Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.
Related commands
Same sheet · prioritizing TLS and Certificates
Use a CA certificate directory
Use a directory of CA certificates instead of a single bundle file.
Use a PKCS#12 client certificate
Authenticate with a P12 / PFX certificate bundle.
Request certificate status checks
Require certificate status validation via TLS stapling when supported.