On 14 Mar 2022, at 19:02, Yann Ylavic <ylavic....@gmail.com> wrote:
> 
> Step 3) does not work anymore with latest openssl versions, the only
> way to configure custom dhparams in httpd is to append them to the
> certificate file (see
> https://httpd.apache.org/docs/2.4/mod/mod_ssl.html#sslcertificatefile 
> <https://httpd.apache.org/docs/2.4/mod/mod_ssl.html#sslcertificatefile>).

Thank you so much! This was the solution.
The scanner is no longer complaining! :) 
https://internet.nl/site/lifeforms.nl/1529724/# 
<https://internet.nl/site/lifeforms.nl/1529724/#>

For those who stumble on this thread with the same issue, I’ll review:
- I created a 4096 bit RSA key
- I requested a certificate with Let’s Encrypt
- I appended the RFC's standard 4096 bit DH parameters file to the certificate, 
e.g.

# wget 
https://raw.githubusercontent.com/internetstandards/dhe_groups/master/ffdhe4096.pem
 
<https://raw.githubusercontent.com/internetstandards/dhe_groups/master/ffdhe4096.pem>
# cat ffdhe4096.pem >> newcert.pem

(or the name of your certificate)

Restart Apache and it should look great.
Thank you all for the input!

Cheers,
WH

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