Let's Encrypt EC256 cert disables TLS1.2?

Traefik Traefik v2
1

Hi all

I have a rather standard Traefik configuration using TLS 1.2 and 1.3.

When using RSA4096 certificates, all goes well and both TLS versions are supported. However, when I change the key type to EC256 and have LE generate a new certificate, TLS 1.2 stops working. I verified all of this with Qualys SSL labs.

Is this the expected behaviour? Does TLS 1.2 not support EC certificates?

2

Please post the relevant tls sections from your config.

TLS v1.2 works with ECC keys. You may be caught up in the Cipher Suites.

3

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