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Multiple domain Certificate Authority

Posted on 2009-02-16
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My job requires me to build a Certificate Authority Infrastructure for our project. It will be Microsoft Certificate Authority. This is a foreign infrastructure so it has 5 different domains. They are: asia, europe, south america, africa and north america. Each of these domain has its own domain name space. For example: us.xx.xx.xx.gov, eur.xx.xx.xx.gov.

Do I have to build 5 different Certificate Authority for these 5 domains? Or can I just build one insfrastructure for all 5 domains?

Thanks
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Question by:dongocdung
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by:Paka
Paka earned 1500 total points
ID: 23657783
Sounds like a fun project!  The answer is - it depends.  Are you running all these domains in the same forest or are they different forests?  Are you going to run your CA as an Enterprise Root CA or a Standalone CA?  What are you going to use your CA(s) for (ie PKI, SmartCard Logon, Web Authentication,etc)?
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by:dongocdung
ID: 23659108
All of these domains are in the same forest.
The CA is running as an Enterprise Root CA
The CA is use for smartcard logon, machine cert and VPN.
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Paka earned 1500 total points
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You can get by with a single Enterprise Root CA.  However, best practice is to create a couple Enterprise Subordinates (for fault tolerance) to issue the certs and to take the Enterprise Root offline (for security purposes).

How big of an enterprise will you be serving?
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