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 an OCSP responder for my existing internal Microsoft CA? I've seen several options for a complete CA but nothing in the way of MS integration.
Failing something prebuilt what kind of output would I need to pump back from an IIS instance to emulate a success?