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Status Not under consideration
Workspace IBM i
Categories Security
Created by Guest
Created on Sep 26, 2018

IBM i Server exit points

I use the IBM Server exit points to allow/deny and secure functions and access to my Power i LPARs.


Use Case:

It would be great the be able to get the IP address of the requester passed along in all of the exits. It is available in some of them like FTP and Telnet. This comes in handy when an attack against a server is determined and I can simply add the IP address to a Block List that the server exit *PGMs check before even starting to verify if the connection is valid.


Idea priority Medium
  • Guest
    Dec 11, 2020

    IBM does not intend to provide an additional solution to this request at this time, so it is being closed. The security appliance functionality in the previous update provides a strategic single location to implement an IP address block list.

  • Guest
    Jun 8, 2020

    IBM i has built in "Security Appliance" capabilities.

    IP Packet Filtering https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_74/rzajb/rzajbrzajb0ippacketsecuritysd.htm can solve this at the system level. Preventing addresses at the IP layer universally solves the issue for all servers, not just those with an exit point available that includes the remote IP address.

    Another option applicable for most applications is the QIBM_QSO_ACCEPT socket user exit. https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_74/rzab6/socketuserexit.htm
    This processing happens at a higher layer however it could make use of the existing blacklist file.

    It is unlikely all server exit points can be updated to include the IP address in the next release. The referenced options are both available today in multiple releases and solve the issue at a system wide level. Will one of these options work to solve the requirement?

  • Guest
    May 29, 2020

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - Power Systems
    Product - IBM i
    Component - Security
    Operating system - IBM i
    Source - Client

    For recording keeping, the previous attributes were:
    Brand - Servers and Systems Software
    Product family - Power Systems
    Product - IBM i
    Component - Core OS
    Operating system - IBM i
    Source - Client

  • Guest
    Mar 31, 2020

    The CAAC has reviewed this requirement and recommends that IBM view this as a high priority requirement that is important to be addressed. Protecting the community from malicious attacks via denial of service should indeed be implemented.

    Background: The COMMON Americas Advisory Council (CAAC) members have a broad range of experience in working with small and medium-sized IBM i customers. CAAC has a key role in working with IBM i development to help assess the value and impact of individual RFEs on the broader IBM i community, and has therefore reviewed your RFE.

    For more information about CAAC, see www.common.org/caac

    For more details about CAAC's role with RFEs, see http://www.ibmsystemsmag.com/Blogs/i-Can/May-2017/COMMON-Americas-Advisory-Council-%28CAAC%29-and-RFEs/

    Nancy Uthke-Schmucki - CAAC Program Manager

  • Guest
    Mar 11, 2020

    QIBM_QNPS_ENTRY
    QIBM_QNPS_SPLF
    QIBM_QPWFS_FILE_SERV
    QIBM_QSQ_CLI_CONNECT

    ..etc...

    ... Basically any of the server exits that handle connections to an LPAR, the goal here is to stop the connection if the IP address has been determined to be an attack. I have had cases where someone did a port scan and then a vulnerability attack to try and connect to any of the servers listening on ports. Some of those that had IP address in the API parms I was able to drop and prove we were protected, others I had to just accept and move on and hope the user profile would do it.

  • Guest
    Mar 12, 2019

    Please be more specific as to which server exit points you would like to see the IP address of the requester added to so that I may route this request to the correct owner.

  • Guest
    Sep 27, 2018

    Maybe provide an example where it is not ?

    Maybe the API QDCRDEVD format 0600 is an option ?