ports that ad communicates on between sites?

We use a site-to-site VPN and Active Directory, but for security purposes only open the necessary ports. Would someone please provide me with a list of all ports needed to ensure my Active Directory is able to communicate between the servers in the offices.
SANDDRAGON2004Asked:
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Toni UranjekConsultant/TrainerCommented:
Hi!

These article contain port list:

"Active Directory Replication over Firewalls"
http://technet.microsoft.com/en-us/library/bb727063.aspx

HTH

Toni

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