Ports used by DirSync for Azure AD

Ports used by DirSync for Azure AD

Q. What ports does DirSync use for synchronization with Azure AD?

A. All communications for synchronization from AD to Azure AD use HTTPS (443) except for the Certificate Revocation List (CRL) download which uses HTTP (port 80). This is documented at https://support.office.com/en-us/article/Office-365-URLs-and-IP-address-ranges-8548a211-3fe7-47cb-abb1-355ea5aa88a2?ui=en-US&rs=en-US&ad=US#BKMK_Portal-identity.

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