How to Specify Repository Ports
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To change the ports that the server listens requires you to edit registry keys on the machine on which the Repository Application Server is running. For more information about this process, see How to Specify Repository Ports - Server Side.
Client Side
On the client side, in ER/Studio Data Architect you can use the Repository > Repository Properties. Change to the Server tab and specify the ports through which you want the client to communicate. The register value RepoServer Port mentioned before corresponds to the Communication Port listed on the Server tab. The register value RepoProbe Port corresponds to the Identification Port listed on the Server tab.
The identification port uses a UDP broadcast to identify running Repository servers to which you can connect in order to provide a list to the user, such as the list in the Repository > Options dialog). This is optional and does not cause any issues if it is unavailable.
The communication port provides all communication between the ER/Studio client and the Repository server services, such as login, get diagram, and checkout/check-in requests as well as event updates, and any other operations requiring information from the Repository. All communication is initiated by the client via TCP/IP. This port is required for use of the Repository, although you can change it to a different port number if necessary.
The TLS checkbox allows you to securely connect with the repository at port 54334 or another port of your choosing.