connections from a domain controller to the SPS on port 135, 137, 3389

What could be the reason why I see connections from a domain controller to the SPS on port 135, 137, 3389? These are blocked. The question is if these are needed.

The SPS are joined to the AD.

0 Darko 1 month ago

Hello Andreas,

Here is the list of required ports. What firewall ports are required for use with SPS? (4336234)

If you SPS server has role of Search master then RDP port 3389 is not needed because RDP traffic does not flow from that server.
If you configured storage location (backup or archive) on domain controller server then port 137 could be needed.

Based on the document above, port 135 is not needed.

Best regards,

Darko
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