How to enable TLS 1.0 and TLS 1.1 protocols in RHEL 8

Solution Verified - Updated -

Issue

  • Cannot force curl to use TLS version 1.0 or 1.1 in RHEL 8.
# curl -sS -v --tlsv1.1 -X GET https://example.com/
*   Trying 10.66.192.54...
* TCP_NODELAY set
* Connected to example.com (10.66.192.54) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*   CAfile: /etc/pki/tls/certs/ca-bundle.crt
  CApath: none
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.3 (OUT), TLS alert, protocol version (582):
* error:1425F102:SSL routines:ssl_choose_client_version:unsupported protocol
* Closing connection 0
curl: (35) error:1425F102:SSL routines:ssl_choose_client_version:unsupported protocol
  • How to enable TLS 1.0 and TLS 1.1 protocols in RHEL 8?

Environment

  • Red Hat Enterprise Linux 8

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