Skip to Main Content
IBM Power Ideas Portal

This portal is to open public enhancement requests against IBM Power Systems products, including IBM i. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (

Shape the future of IBM!

We invite you to shape the future of IBM, including product roadmaps, by submitting ideas that matter to you the most. Here's how it works:

Search existing ideas

Start by searching and reviewing ideas and requests to enhance a product or service. Take a look at ideas others have posted, and add a comment, vote, or subscribe to updates on them if they matter to you. If you can't find what you are looking for,

Post your ideas
  1. Post an idea.

  2. Get feedback from the IBM team and other customers to refine your idea.

  3. Follow the idea through the IBM Ideas process.

Specific links you will want to bookmark for future use

Welcome to the IBM Ideas Portal ( - Use this site to find out additional information and details about the IBM Ideas process and statuses.

IBM Unified Ideas Portal ( - Use this site to view all of your ideas, create new ideas for any IBM product, or search for ideas across all of IBM. - Use this email to suggest enhancements to the Ideas process or request help from IBM for submitting your Ideas.

Status Under review
Workspace IBM i
Categories Networking
Created by Guest
Created on Jan 11, 2024

Add a WRKFCNUSG QIBM_QTMF_SERVER_REQ* option to restrict the system ftp subcommand.

Any ftp client can log into the server and use the ftp subcommand system to determine the name of the OS and what level it is running. IBM does try to obfuscate the information provided by using the name of an OS long discontinued (OS/400) instead of the current (IBM i).

> system

215 OS/400 is the remote operating system. The TCP/IP version is "V7R5M0".

There's a number of reasons why I'd like to disable the system subcommand:

1 - Knowing the name of the OS allows nefarious individuals to perform a more targeted attack.

2 - Knowing the level of the OS may notify a nefarious user that this may be an obsolete version of the OS and may be less likely to have recent security patches.

3 - If a person is in IBM Early Programs it may be considered a violation of NDA for someone to see: The TCP/IP version is "rNext".

4 - (minor petty) Neither OS/400 nor IBM i are registered with IANA:

Note: Since IBM i's ftp client runs system when doing ftp from one IBM i to another will this cause an issue if system is disabled?

230 ROB logged on.

OS/400 is the remote operating system. The TCP/IP version is "V7R5M0".

250 Now using naming format "0".

257 "ROB" is current library.

Idea priority Low
  • Guest
    Jul 12, 2024
    IBM has received your Idea and is evaluating it. IBM will provide a response after evaluation is complete.

    IBM Power Systems Development