What ports are required to be open on a Firewall for Unified Communications Diagnostics to monitor a server placed in a DMZ?
Unified Communications Diagnostics connects with native Windows RPC connections.
For more details, see below for port requirements that Unified Communications Diagnostics (UCD) is likely to use:
Browsing UDP:137,138
DNS Resolution UDP:53
Event Viewer TCP:139
File Sharing access TCP:139
Logon Sequence UDP:137,138 TCP:139
NetLogon UDP:138
Pass Through Validation UDP:137,138 TCP:139
Performance Monitor TCP:139
Printing UDP:137,138 TCP:139
Registry TCP:139
Server Manager TCP:139
RPC TCP:135
These ports need to be bi directional (both ways)
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