Joining two domains.

Is it possible in Windows 2003 SBS to join two domains together?  For example,  I have domain A (domainA.com) and domain B (domainB.local).  Can inter-connect the two so that I don't have to authenticate when crossing domains to access resources?  What about DNS?  Do I need to do anything there to join the two?  Active Directory?  Etc....

Thanks!
QuetysisAsked:
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dalsymDirector of ITCommented:
Active Directory Domains and Trusts

Do you traffic to be allowed both ways between the two domains or just one direction?

Off the top of my head, I think you are looking for a two-way transitive trust. I'm sure someone will come along with more detail if needed.
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QuetysisAuthor Commented:
I am looking to allow traffic both ways.  I'll look at the AD domains and trusts.  Thanks
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Erik BjersPrincipal Systems AdministratorCommented:
Yes, you want two-way transitive trust.

If you are creating a new doman, you can join it to an existing forest when you rin DCPROM, this will create the trusts you need.

eb
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scrathcyboyCommented:
You can do this from the LOCAL network, since they are just shared directories, but for people external to the local network accessing these websites, there is no cross-certificate association that is normal for the website setup.  So is this just for local access, or for the public from outside, on the web??
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nprignanoTechnical ArchitectCommented:
UNFORTUNATELY, since you are using SBS, you cannot create trusts.  SBS is designed for small business, and therefore is limited with its functionality for enterprise class solutions (such as creating multi-domain networks).  If you want to do this, you will need to upgrade at least one of the servers to Win2003 Standard.

http://www.experts-exchange.com/Operating_Systems/Windows_Server_2003/Q_21505548.html


nprignano
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Lee W, MVPTechnology and Business Process AdvisorCommented:
nprignano is close, but not quite correct.  As he states, SBS domains CANNOT be joined together - you cannot create trusts between them.  Simply adding one regular server will not allow you to create a trust - this restriction is DOMAIN level, not server level.  If you wanted to create a trust between the two domains you would have to upgrade BOTH domains to standard versions of Windows Server using the Transition Pack for SBS 2003.  This is not a cheap thing to as the transition pack essentially costs the savings you had by buying SBS instead of the regular products.  For example, if SBS cost you $3000 for licensing, and Exchange, Windows, and CALs WOULD have cost you $6000 for the full products, then the transition pack will cost you $3000 (Transition Pack $3000 + SBS licensing $3000 = 6000 = what you would have spent on the full products).
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nprignanoTechnical ArchitectCommented:
thank you, leew, for setting the record straight :)

nprignano
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