BitBucket cloud connected to Active Directory won't reflect on BitBucket Mirror

[Anuradha Wishmantha]

Hi, 

We have a BitBucket cloud account.

Since our main development center is in Colombo, we decided to setup a BitBucket Mirror in one of virtual machines residing in our intranet. 

This Mirror was exposed to the internet (HTTPS) through a specific port due to security reasons, all other ports are blocked.

We recently configured Active Directory sign on for our BitBucket Cloud account, and the Mirror stopped working.

Mirror has no access to authenticate Active Directory because the ports might be blocked.

I found the following in Atlassian Documentation

Authentication

When a user interacts with the mirror, the mirror automatically delegates authentication to the primary. No extra user management is required on mirrors, and all the users, groups and permissions of the primary Bitbucket Cloud are replicated exactly on the mirror.

Should the mirror still have access to Active Directory or it's ports when the BitBucket Cloud account is configured with Active Directory?