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 ...

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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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3answers
964 views

How do I check if my SSL certificates have been revoked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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1answer
97 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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370 views

WS 2008 R2 Online Responder not Responding to OCSP Requests

I'm trying to configure an Online Responder (OCSP Responder) for a Windows-based PKI (2008 R2) and I can't for the life of me get the OCSP service to validate when I check it in the Enterprise PKI ...
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1answer
101 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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1answer
436 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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1answer
384 views

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 ...
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1answer
200 views

Free OCSP server

I can't have OCSP with my current OS licensing (2008 R2 Standard) but I need this option. I'm hoping to avoid shelling out an additional $2300. Are there any open source products that could act as ...
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1answer
333 views

When are OCSP requests sent by web browsers?

I'm testing my https page via webpagespeedtest on IE8, and in one run I noticed a bunch of OSCP requests sent to oscp.godaddy.com. I never noticed any such requests in previous runs. When do browsers ...
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1answer
181 views

Does IIS 6.0 Log CRL Checks?

I am adding a 3rd party OCSP responder(Tumbleweed) plugin to IIS 6.0/Windows. I have the 3rd party tool configured to check the revocation status and would like to assert that IIS is not making a ...
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1answer
164 views

Considerations for certificate revocation for intermittently isolated ad-hoc networks

I'm trying to decide on a certificate revocation strategy for a solution I'm designing (that will utilize Dogtag PKI, per customer request). The obvious choices seem to be using a CRL or using OCSP. ...
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0answers
4k views

OpenSSL: how to setup an OCSP server for checking third-party certificates?

I am testing the Certificate Revocation functionality of a CMTS device. This requires me to setup a OCSP responder. Since it will only be used for testing I assume that the minimal implementation ...
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4k views

Free OCSP server for testing purposes?

Can anyone recommend a free and simple OCSP server for Windows or Linux?