Online Certificate Status Protocol (OCSP) is a protocol used for validation of x509 certificates in a PKI system. Most OCSP implementations ingest certificate revocation lists (CRLs) from Certificate Authorities (CAs), create an internally signed database called a proof set, and then produce OCSP using the proofs.
Questions tagged [ocsp]
67 questions
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nginx: Rerouting/proxy OCSP request to adifferent backend
I'd like to filter/reroute OCSP traffic from regular HTTP traffic to a different back-end. Reviewing Network Analyses of OCSP protocol, if the OCSP request is via POST, I can filter on Content-Type: application/ocsp-request. The tricky part, is if…

bugzbunny
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How can I make nginx only look for ipv4 resolution for OCSP? Or have I misinterpreted the point of failure?
I've set OCSP up, but see lots of resolver timed out errors in my logs:
ocsp.sectigo.com could not be resolved (110: Operation timed out) while requesting certificate status, responder: ocsp.sectigo.com
Looking into it it seems I can curl…

Codemonkey
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OCSP responder on a virtual host of Apache/Nginx
Is it possible to run an OCSP responder openssl ocsp -index ... on an Apache/Nginx virtual host alongside other virtual hosts? So ocsp.example.com or pki.example.com/ocsp/

vince6e74
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How to check if a letsencrypt certificate has been revoked
I am trying to check if a certificate issued by letsencrypt has been revoked based on this answer:
openssl ocsp -issuer highschoolhelper.org_fullchain.crt -cert highschoolhelper.org_fullchain.crt \
-text -url…

H Aßdøµ
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Apache httpd: How to enable OCSP stapling with mod_md?
I want to enable OCSP stapling with mod_md on my Debian 10 server with Apache httpd. I have enabled the module, and the command MDomain example.org is understood, but the example
MDStapling on
yields an error…

vinc17
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Problem with TLS identity not verified
I run a CA server "Microsoft CA Server Enterprise" and I generate certificates then bind the cert to my site. In all clients in my network, I add the cert with
certutil -addstore ca org.cer
When my clients browse the org site, Google Chrome shows…

Soheil
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Configuring OCSP stapling in NGINX
Should I concatenate all certificates(server + intermediates + root) or just(server + intermediates) for ssl_trusted_certificate directive in NGINX.

user3448600
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