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Exposed internal exchange server IP address via auto discover URL and public IP

DM Kosala Randika Paranathala 76 Reputation points
2023-02-11T05:27:51.16+00:00

Hi,

 

We have exchange server 2016 installed and updated CU22, all services working fine but our security team has been performed an external scan and they were able to find that our internal IPs of the exchange server are visible. How do we hide them from the external? is there any solution? Appreciate your support.

 

Thank you.

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  1. Fabricio Godoy 2,611 Reputation points
    2023-02-11T07:32:39.3366667+00:00

    Hello Kosala

    For this situation my recommendation is install a Exchange Edge transport server to not exposed your internal exchange.

    https://learn.microsoft.com/en-us/exchange/plan-and-deploy/deploy-new-installations/install-edge-transport-role?view=exchserver-2019

    Good luck

    Regards

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