Question Support Post-quantum (PQC)?

[Franchino]

Server operating system version

Almalinux 9.7

Plesk version and microupdate number

18.0.77#2

Hi,

I have

Plesk 18.0.77#2
Almalinux 9.7
1.28.3-2.redhat.9+p18.0.77.2+t260415.1740
openssl 3.5.1-7.el9_7


When I run a test on SSL Labs I get this warning: This server does not support PQC (Post-Quantum Cryptography) key exchange.

Is there any way to enable it?
Does Plesk support it?

Thanks

 

[scsa20]

That's actually the limitation of OpenSSL and the Linux version. If you were on Debian 13 or AlmaLinux 10.1 then you would have the support needed natively. In your case you could get it to work although not natively supported by Plesk.

More info: Post-Quantum Cryptography (PQC) support in NGINX – NGINX Community Blog
Grok gave a pretty good outline for the process for adding the support: AlmaLinux PQC Support with Plesk | Shared Grok Conversation