Port information

The following table lists the ports that the product uses to communicate with the IBM® i server:
Product function Required TCP/IP ports on IBM i
Remote System Explorer functions: including filtering, editing, compiling, and running
  • 8470: IBM i central server
  • 8475: IBM i remote command server
  • 8476: IBM i signon server
  • 446: IBM i DRDA® (record access) server
  • 449: IBM i server mapper server
Integrated File System (IFS) access 8473: IBM i file server
Interactive job support (via the STRRSESVR command) 8472: IBM i data queue server
You need ports 8470, 8475, 8476, 446, and 449 to remain open for proper functioning of the product. However, you only need to keep the IFS and Interactive job support ports open if you require those functions.

Also note that the IBM Toolbox for Java™ handles the communications to and from your IBM i server, using http://www.ibm.com/systems/i/software/toolbox/faqports.html.

One additional local port that should be opened is port 4300, which the STRRSESVR command uses from the workstation, to monitor "call backs" from the IBM i server to your local workstation.

The following local port is also required:
Product function Required local port
Interactive job support (via the STRRSESVR command) 4300: Remote System Explorer communications daemon
To change the local ports that your workstation uses to connect to the IBM i server:
  • Remote System Explorer port:
    1. From the workbench menu bar, click Window > Preferences.
    2. Expand Remote Systems and click Communications to select it.
    3. You can change the port number in the RSE Communications daemon port number field.
Product function Required server port
Integrated i Debugger 3825: Debugger server

To change the port that the debugger server listens on, use the IBM i WRKSRVTBLE command and add or change the entry QDBGSVR2. If this entry is not found in the table, the debugger server listens on the default port 3825


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