Steps for running a separate instance of TFTP for each security label

You must run a separate instance of TFTP for each security label you need to support.

Before you begin

Plan to run each instance of TFTP under a different job name assigned to a user ID with the appropriate security label. Understand that you can run multiple TFTP servers on the same unrestricted stack.

Procedure

Perform the following steps to run a separate instance of TFTP for each security label:

  1. Define a VIPA in a network security zone with the appropriate security label for each server on that stack.
  2. Perform one of the following actions:
    • With a unique port number for each entry, use the PORT reservation statement in the TCPIP profile to override the bind address of each job name to the appropriate VIPA and port number.
    • Instead of using the PORT reservation statement and specifying the port using -p in the TFTP start procedure, use the -b TFTP start option to specify the IP address to which this instance of TFTP should bind. If the -b start option is used, each instance of TFTP can use the same well-known port (69).
  3. Ensure the procedure for each instance of TFTP specifies on which port or IP address it will run.

Results

You know you are done when you have established an environment where separate instances of TFTP can use the same well-known port (if the -b start option was used.)