Questions tagged [ocsp]

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.

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Check OCSP on Linux with GET method

I want to verify operation of Microsoft OCSP server from Linux. I tried using OpenSSL, but it always returns: Error querying OCSP responder 140643157128320:error:27076072:OCSP routines:...
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Windows: CertUtil "Error => Pending OCSP response download"

I am trying to debug why Windows does not accept the responses from my OCSP responder as valid. I am using the command CertUtil -downloadOcsp .\certs .\ocsp_responses downloadonce A single p7b ...
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884 views

Windows: How can I diagnose certificate revocation check failure, when I know the OK response is sent?

TL;DR; How to discover what is wrong with OCSP response on Windows? I am trying to install a new certificate in on-premises Exchange Server 2019. But Exchange always reports that the new certificate ...
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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: ...
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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....
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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/
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OCSP setup for Vault

I have vault setup running in container for PKI Secrets Engine and would like to add OCSP support for application to check if certificate is not revoked. I didn’t find any explanation on how to setup ...
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2answers
654 views

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 \...
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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 <MDomain mydomain....
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ADCS PKI - AIA Location when using OCSP

My question is wheter or not I still need to configure the following AIA location on my subordinate CA when I'm using OCSP: http://SERVERFQN/DIRECTORY/<Serverdnsname>_<Caname><...
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814 views

"Next Update" is missing from the OCSP response

Overall I am experimenting to set up a private PKI by using OpenSSL on a box of CentOS 7. Everything works just fine except the issue that the "Next Update" line is missing from the OCSP response. ...
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OCSP Location error in pkiview.msc. But OCSP responders seem to work

I am currently setting up a new internal Windows PKI infrastructure in our organisation, to replace an old setup. Things are mostly fine, but the OCSP location has the status "Error" in the pkiview ...
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495 views

OCSP client certificate validation

For a home automation project I have created an API (written in ASP.NET so hosted in IIS) and written my own Android app to communicate with this API. To prevent people from accessing specific ...
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Why am I unable to make OCSP Stapling work with my nginx, libressl on FreeBSD 12.0-STABLE setup?

After hours of trying I have to get help for my issue. I am trying to get OCSP stapling to work with my setup, but am not successful in doing so. Here is my nginx configuration, without any non-...
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Best approach to tier 2 PKI with multiple subordinates with ADCS

I'm looking for some guidelines toward the best approach to setting up a Tier 2 PKI with ADCS that has 2 subordinate CA's for high availability. I have the following questions regarding this: Is ...
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Using Apache as Stunnel

I was using stunnel to make an http port into https. However, it doesn't support OCSP stapling, so I decided to use Apache reverse proxy instead. The service I want to make https is on 7231, so I ...
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How to build an OCSP certificate chain for dual-stack RSA + ECC certificates

Nginx lets us use multiple certificates so that we can use both ECC and RSA certificates ssl_certificate /etc/ssl/example.com.combined.crt; ssl_certificate_key /etc/ssl/example.com.key; ...
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StrongswanPKI - Adding status_request or MustStaple TLS extension to certificate?

Using PKI tool from strongswan to setup a CA. Trying to setup the OCSP side of things have run into many issues as per another thread I posted (Strongswan PKI - ED25519 Certifcates - OCSP Responder ...
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Strongswan PKI - ED25519 Certifcates - OCSP Responder having issues

I am trying to setup an ocsp for the certificates generated out of strongswan PKI - using it as a CA. If I try to use openssl it just throws out Can't open index.txt.attr for reading, No such file or ...
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nginx OCSP stapling centos let's encrypt

On centos, but I guess for every OS, I want to make ocsp stapling work in Nginx ssl_stapling on; ssl_trusted_certificate ??????; ssl_stapling_verify on; what do I define for ...
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What happens when a CN or Alternative Name in a SAN or UCC ssl certificate no longer resolves to the server?

What happens when a CN or Alternative Name in a SAN or UCC ssl certificate no longer resolves to the server? Are there any problems that can arise from this? The question is general but the ...
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OCSP verification fails in Strongswan (IKEv2)

I've managed to set up an IPsec connection between two (virtual) hosts in transport mode and now I want the server to validate the client's certificate with OCSP. In a third host, I've run an OCSP ...
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OCSP responder timed out while requesting certificate status

I'm intermittently seeing errors such as the following in my nginx error logs: OCSP responder timed out (110: Connection timed out) while requesting certificate status, responder: ocsp.comodoca.com ...
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Online Certificate Status Protocol (OCSP) and Port 80

I had used OCSP stapling in AWS in the past, due to changes on AWS they no longer allow this. This has resulted in having to open a firewall rule to allow outbound HTTP traffic for OCSP from client ...
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OCSP Stapling for Thawte certificates does not work

OCSP Stapling does not work for Thawte certificates on Nginx, what could be the problem? Configured Nginx to work with OCSP Stapling. ssl_stapling on; ssl_stapling_verify on; ssl_trusted_certificate ...
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nginx: ssl_stapling_verify: What exactly is being verified?

What exactly does the ssl_stapling_verify directive? Does it check if the signature of the answer is correct? The official nginx documentation is very vague in explaining this: https://nginx.org/en/...
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Do Postfix and Dovecot support OCSP stapling?

Since I would like to set the "must staple" attribute in my SSL certificates, I was doing some research to find out if all of my services support OCSP stapling. So far I found out, that Apache does ...
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Can I make Nginx automatically OCSP staple certificates at reload/restart?

Is there a way to make Nginx proactively OCSP staple certificates each time its configuration is reloaded or it is re-started? Alternatively, can Nginx be set to save the stapled certificates across ...
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OCSP with nginx is unable to get issuer certificate

I am having trouble setting up OCSP on nginx/1.6.2 with a certificate issued by GlobalSign. I read many related posts, but none of the solutions I've found worked. When I connect to the server, OCSP ...
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Enabling OCSP stapling on IIS SNI-enabled site

If Require Server Name Indication is checked on the binding of an IIS site, OCSP stapling is disabled for the site. This is easily confirmed by enabling SNI for a site that currently doesn't require ...
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Trust certificate for OCSP, but not for client certs?

According to the nginx docs, you can specify certificates to be trusted for both OCSP response and client certificate verification: ssl_trusted_certificate / ssl_client_certificate Specifies a ...
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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.
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OCSP Stapling on LAMP with Let's Encrypt

How do I verify if OCSP Stapling works correctly? Setup: LAMP with Let's Encrypt, test domain https://pavelstriz.cz/ High-Tech Bridge result says OCSP is enabled Is this enough for me to believe ...
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Nginx letsencrypt OCSP stappling

I have set up nginx with SSL and letsencrypt certificates. However I am unable to get OCSP stappling to work. From what I found in the web, it should work with the following configuration, ...
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Nginx, SSL and OSCP

I have a problem. When I open my website with https, I see error message in my error.log: 2015/11/03 19:47:21 [error] 7799#0: recv() failed (111: Connection refused) while requesting certificate ...
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OCSP ERROR in ssllabs output

I just renewed my certificate on https://wemarsh.com/ . After I thought I had everything working I did some online SSL tests, just as a routine check that everything is configured properly. Some of ...
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OCSP server suggests trying again later

I am using Firefox to access my site secured with a free StartSSL certificate. I am sending an HSTS header (though now for testing I have it set to 15 seconds!) and I have enabled OCSP stapling. ...
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1answer
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OCSP responder not present?

Am trying to set up OCSP validation routines, and so want to be comfortable with the environment first. Found excellent tutorials at for example OpenSSL: Manually verify a certificate against an OCSP....
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IIS ocsp stapling - no response

I have a certificate that is configured in IIS in windows server 2012 with ocsp_uri. When I test the server for oscp stapling there is no response: openssl s_client -connect example.com:443 -tls1 -...
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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 ...
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How to Configure Windows Certificate Services not to use AIA and CRL when issuing Certificates

I have a Windows Certificate Service installed on a Windows Server 2008 R2 VM, and what I need to do is to modify certificates NOT to use AIA and CRL, but to ONLY use OCSP Responder. The OCSP is ...
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How to get OpenSSH to use OCSP for revocation

As the title says, is there any (free) library, patch, etc. that allows OpenSSH to be configured to check x.509 certificate revocation via OCSP (online certificate status protocol)? If so, can you ...
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OCSP validation - unable to get local issuer certificate

I'm new to setup SSL from the scratch and did my first steps. I bought a SSL cert from RapidSSL for my domain and followed there steps to install the cert. In general the cert is valid and working on ...
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691 views

Adding OCSP and NDES into existing environment? What can be installed together?

Currently have one offline CA and one Sub Issuing CA that just has the Web Enrollment installed. Looking at also implementing NDES and OCSP. I know the web enrollment can be installed on the Issuing ...
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Apache stapling_renew_response: responder error

My Apache error log shows a lot of " stapling_renew_response: responder " errors. Was hoping to add a browser screenshot but I'm a newbie and therefore not authorised. This is what is shown from the ...
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How do I check if my SSL certificates have been revoked

The recent discovery of the heartbleed vulnerability has prompted certificate authorities to re-issue certificates. I have two certificates that were generated before the heartbleed vulnerability ...
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1k views

How do I set up an OCSP responder for multiple CA certificates?

I want to have one OCSP responder for more than one intermediate CA issuers with OpenSSL. How would I do this? All the examples I see all respond only for one issuer certificate and one OCSP signing ...
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1answer
597 views

Remove specified OCSP responder from certificate

OCSP is brain-damaged and a privacy violation. Is there a way I can remove the specified OCSP responder from a certificate file to prevent my site's visitors from having to suffer it? From what I ...
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1k views

Are there certain specific host file entries that Windows 2008 will ignore for security purposes?

While troubleshooting a network timeout/connectivity WinHTTP issue, I temporarily added a host file entry for: 127.0.0.1 ctldl.windowsupdate.com (The server has no internet connection and the ...
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How large is the certificate OCSP and CRL cache in my Windows server?

How can I see the size of the in-memory OCSP cache to a CRL cache in my Domain Controllers? In other words, most Windows process that uses CryptoAPIs have an in-memory cache of every CRL and OCSP ...