ECDSA allowlist, ISRG Root X2, Nginx config for OSCP

My domain is:

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


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 using ISRG Root X2 and the ECDSA allowlist:

    ssl_trusted_certificate /etc/letsencrypt/live/;
    ssl_stapling on;
    ssl_stapling_verify on;
    resolver 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.


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

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