The firewall team files a ticket asking for "the Data Domain ports"…

Question

The firewall team files a ticket asking for "the Data Domain ports" for the upcoming deployment, and the engineer starts pasting the complete list of every port the appliance platform could possibly use, from documentation, into the request. What is the correct way to build that firewall request?

Accepted Answer

Select the protocols the design will actually use first, then request only the ports those services plus management access need, because the port list is derived from the protocol decision, not from the appliance's full capability list. — The firewall doesn't need every port your appliance could theoretically speak, only the ones it will actually say. Decide the protocols first, Boost here, CIFS there, S3 for the archive, add management access, and open exactly those and nothing else. Everything-from-the-manual is how a backup appliance quietly becomes the most exposed host in the datacenter.

Answer

Opening the complete documented service set is simply the safe play, because the appliance is a trusted storage system by role, and a handful of unused listeners on a host that the design already trusts simply pose no meaningful exposure to anybody on the network in practice.

Answer

Only the management interface ports matter, since every backup data flow is carried inside the management session over the same encrypted control channel.

Answer

Open the full range on both sides and let the appliance's built-in service filtering reject traffic for unused protocols, so the network team doesn't have to maintain the exceptions.

The firewall team files a ticket asking for "the Data Domain ports" for the upcoming deployment, and the engineer starts pasting the complete list of every port the appliance platform could possibly use, from documentation, into the request. What is the correct way to build that firewall request?

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