ECDSA allowlist, ISRG Root X2, Nginx config for OSCP

My domain is: hlfh.space

My web server is (include version): nginx/1.22.1

The operating system my web server runs on is (include version): Arch Linux x86_64

My hosting provider, if applicable, is: dedicated server, Scaleway Dedibox

I can login to a root shell on my machine (yes or no, or I don't know): yes

I'm using a control panel to manage my site (no, or provide the name and version of the control panel): no

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): certbot 1.32.0

Hi,

I joined the ECDSA allowlist, and I was wondering if I should update my Nginx conf for newly generated certificates with ISRG Root X2. I understand ISRG Root X2 does not support OSCP.

Here is my conf. related to OCSP for the domain hlfh.space using ISRG Root X2 and the ECDSA allowlist:

    ssl_trusted_certificate /etc/letsencrypt/live/hlfh.space/chain.pem;
    ssl_stapling on;
    ssl_stapling_verify on;
    resolver 9.9.9.9 valid=300s;
    resolver_timeout 5s;

Can I remove this OCSP conf. lines for all domains using ISRG Root X2?

My second question: if I am advised to remove these lines related to TLS certificates signed by ISRG Root X2, shall I also NOT care about OCSP Must Staple support? I know I could implement it (GitHub - tomwassenberg/certbot-ocsp-fetcher: A tool that primes the OCSP cache of nginx for certificates managed by Certbot, in order to make OCSP stapling work reliably.) but if it becomes useless, I won't.

But the ECDSA intermediate E1, which signs the end leaf certificates, does.

You probably shouldn't.

5 Likes

Ok thanks, I'll keep the nginx OCSP configuration with the new ECDSA setup.

1 Like

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.