Fraser,

It doesn't look like we fit the model. Our IPA CA's cert is as expected, but 
the other one is:

$ openssl x509 -noout -in web-ca.crt -issuer
issuer= /C=US/ST=VA/L=Fairfax/O=DG Web Team/OU=DG/CN=damascusgrp.com DG Web 
Team Root CA

Since I don't see a hostname in there anywhere (and in fact, further 
conversations with this team turned up the fact that they're just creating 
these by hand using openssl commands rather than running any sort of service at 
all), I'm hesitant to just barge ahead and try to make it work on my own...


-- 
  Bret Wortman
  bret.wort...@damascusgrp.com

On Mon, Feb 15, 2021, at 8:30 PM, Fraser Tweedale wrote:
> On Mon, Feb 15, 2021 at 10:10:59AM -0500, Bret Wortman via FreeIPA-users 
> wrote:
> > We had a developer team deploy their own CA and then issue a slew
> > of certificates for users' workstations and other servers, and now
> > they want us to deploy those certificates more widely. I'd rather
> > find a way to bring their CA under ours so that the root CA
> > certificate we already distribute will make theirs "just work"
> > rather than having to distribute another set of root CA
> > certificates.
> > 
> > Is this possible, or would they have to start over and build a
> > subordinate CA from the ground up to make it work? If it's perhaps
> > possible, under what circumstances?
> > 
> Hi Bret,
> 
> It is possible, but there are restrictions about what the sub-CAs
> subject DN can be.  Have a read of this blog post:
> https://frasertweedale.github.io/blog-redhat/posts/2018-08-21-ipa-subordinate-ca.html
> 
> If your developer team's CA certificate does not fit those
> requirements, please share the details of the certificate
> (especially Subject DN) and I'll see if I can find a workaround.
> 
> Cheers,
> Fraser
> 
> >
> > Thanks!
> > 
> > Bret
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