looks like you can enable post quantum cryptography in apache on @almalinux 9 and up with one simple config change1

with the ssl config generated by mozilla's tool2 change the line:

to:

and restart the httpd service with sudo systemctl restart httpd, that's it! (a reload may work as well and you wouldn't have any service downtime, but i'm not certain, i would have to test it)

AlmaLinux 9 ships with OpenSSL 3.5.1 by default3 , so you should be all set for PQC

1 https://brnrd.eu/security/2025-03-22/openssl-35-is-pqc-enabled-and-an-lts-release.html
2 https://ssl-config.mozilla.org/#server=apache&version=2.4.62&config=modern&openssl=3.5.0&guideline=5.7
3 https://distrowatch.com/table.php?distribution=alma

#AlmaLinux #AlmaLinux9 #Linux #Apache #OpenSSL #PQC