Options for Deploying Root and Int Certs to clients not part of do

Options for Deploying Root and Int Certs to clients not part of do

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Options for Deploying Root and Int Certs to clients not part of do KeyMaster 04-29-2007
Posted by =?Utf-8?B?S2V5TWFzdGVy?= on April 29, 2007, 1:50 pm
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What are the options for for deploying root and int ca certs to clients that
are not part of your domain?

For the clients that are part of the domain, do the root and int ca certs
automatically get deployed once you setup the certificate services
infrastructure?

Thanks in advance

Posted by Brian Komar on April 30, 2007, 9:59 am
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On Sun, 29 Apr 2007 10:50:01 -0700, KeyMaster wrote:

> What are the options for for deploying root and int ca certs to clients that
> are not part of your domain?
>
> For the clients that are part of the domain, do the root and int ca certs
> automatically get deployed once you setup the certificate services
> infrastructure?
>
> Thanks in advance

If certificates are not part of the domain, you must come up with either a
manual or scripted method to deploy the root and intermediate certificates.
If certutil is deployed at the client, you can use certutil -addstore (if
you run as local administrator)

Root certificate: certutil -addstore -f Root [certfile.crt]
Intermediate cert: certutil -addstore -f CA [certfile.crt]

You can also use capicom scripting to do this. A sample of this code is
included in my PKI book (ctool.vbs).

For forest members, the easiest way to deploy offline CA certificates is to
publish them to Active Directory:

Root certificate: certutil -dspublish -f [certfile.crt] RootCA
Intermediate cert: certutil -dspublish -f [certfile.crt] SubCA

You do not have to perform this step for online CAs, as they will publish
their information to AD automatically if they are domain or forest members.

Brian

Posted by =?Utf-8?B?S2V5TWFzdGVy?= on April 30, 2007, 11:38 am
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For clients where I don't have access to the console or to run scripts what
would be the options there? Is there a website where they could download this
from?

Let's say I assign a cert to a web server that is accessible from the
outside using certs from my internal cert server. When browsing the website
from our domain the certification path is good, but when browsed from a
customer they get all the certificate errors. What certs would they need, the
issuing CA and the root CA cert's or just the root?

"Brian Komar" wrote:

> On Sun, 29 Apr 2007 10:50:01 -0700, KeyMaster wrote:
>
> > What are the options for for deploying root and int ca certs to clients that
> > are not part of your domain?
> >
> > For the clients that are part of the domain, do the root and int ca certs
> > automatically get deployed once you setup the certificate services
> > infrastructure?
> >
> > Thanks in advance
>
> If certificates are not part of the domain, you must come up with either a
> manual or scripted method to deploy the root and intermediate certificates.
> If certutil is deployed at the client, you can use certutil -addstore (if
> you run as local administrator)
>
> Root certificate: certutil -addstore -f Root [certfile.crt]
> Intermediate cert: certutil -addstore -f CA [certfile.crt]
>
> You can also use capicom scripting to do this. A sample of this code is
> included in my PKI book (ctool.vbs).
>
> For forest members, the easiest way to deploy offline CA certificates is to
> publish them to Active Directory:
>
> Root certificate: certutil -dspublish -f [certfile.crt] RootCA
> Intermediate cert: certutil -dspublish -f [certfile.crt] SubCA
>
> You do not have to perform this step for online CAs, as they will publish
> their information to AD automatically if they are domain or forest members.
>
> Brian
>

Posted by Brian Komar on April 30, 2007, 7:01 pm
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On Mon, 30 Apr 2007 08:38:01 -0700, KeyMaster wrote:

> would be the options there? Is there a website where they could download this
> from?
>
> Let's say I assign a cert to a web server that is accessible from the
> outside using certs from my internal cert server. When browsing the website
> from our domain the certification path is good, but when browsed from a
> customer they get all the certificate errors. What certs would they need, the
> issuing CA and the root CA cert's or just the root?

Bare minimum, they need to add the root Ca to the trusted root store (if
their company allows them to do this).
Additionally, you would need to configure the PKI to have externally
accessible URLs for each CA in the hierarchy for their CDP and AIA.

The default certsrv Web page has an option to download the certificate
chain, allowing the user to install the certificate into the appropriate
stores

Brian

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