AD & Firewall

I have a server for Active directory & Exchange 2003. It is configured with Public IP address

Let's say that Ip address is 201.1.1.11

I have a firewall which has two ethernet connection. Inside for 192.168.0.1 & outside 201.1.1.2

I think I need to open some ports for the firewall.

Which Ports do I have to open to join Active Directory from inside of firewall to outside of AD server?
manrippoAsked:
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bmquintasConnect With a Mentor Commented:
I suppose you have the DC in front of the firewall because you need external access (OWA,POP,WEB) ?
Even so, i think you shoul try a different approach, put the DC in the internal network,  disable its firewall (to join and work with AD it needs quite some ports open...) and to keep the external access , just forward the ports you need (80, 110,25...) Its much safer and practical.
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bmquintasCommented:
   Is this your layout?


                                Internet
                                     |
                                     |
                         Domain Controller 201.1.1.11
                                     |
                       WAN Firewall/Router 201.1.1.2
                                     |
                                     |
                       Lan Address Firewall/router 192.168.0.1
                                     |
                         Internal Network
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manrippoAuthor Commented:
  This is the brief map          
                                                   Internet
                                                        |
                                                        |
                                              Router 201.1.1.1
                                                        |
                                     |--------------------------------------- |    
                                     |                                                  |  
                       Firewall outside 201.1.1.2                         Domain Controller 201.1.1.11
                       Firewall inside  192.168.0.1                                    
                                     |
                                     |
                         Internal Network
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manrippoAuthor Commented:
The thing is we have other branch in other state. We want them use e-mail service ( by connecting microsoft exchange server, not with POP3 ).
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manrippoAuthor Commented:
Is it possible that other branch can use the exchange server even though the server is behind a firewall?
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bmquintasCommented:
Sure, just need to forward ports 80 and 443 from the firewall to the server
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