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Status Delivered
Workspace MQ, MQ Advanced & MQ Appliance
Created by Guest
Created on Apr 21, 2020

RELATED IDEAS

Need configurable tuning parameter via qm.ini to suppress TCP/IP bad data FDCs

Our Enterprise MQ Queue Managers have a need to constantly be scanned by security scanning software and certificate managers that frequently create a large number of rrcE_BAD_DATA_RECEIVED FDCs, which in turn fills up the /var/mqm/errors file system.

The details in the FDC are always:
Component :- cciInvalidDataReceived
Program Name :- amqrmppa
Major Errorcode :- rrcE_BAD_DATA_RECEIVED
Probe Description :- AMQ9207: The data received from host 'xxx.xxx.xxx.xxx' on channel '????' is not valid.

We would like to have a qm.ini tuning parameter setting to have these FDCs suppressed.

We understand that there is an APAR to set an environment variable - https://www.ibm.com/support/pages/apar/IT30348

However there are cases such as systemd startup units where it is difficult to properly set a ENV variable on startup. Having it in the qm.ini as a tuning parameter is a better option to ensure it is picked up when the queue manager is started, no matter the method.

Idea priority Medium
RFE ID 141847
RFE URL
RFE Product IBM MQ
  • Guest
    Reply
    |     May 18, 2022

    How does this implementation differentiate between intentional security scanning as the requester speaks about, and actual DOS or other probes?

  • Guest
    Reply
    |     May 18, 2022

    I am going to guess that the security scans get more intense when MQ may be resetting the connection which gives the scanning software more reason to amp up probes. Then the scanning software does even more to try to break in on every kind of protocol.

  • Admin
    Mark Taylor
    Reply
    |     May 18, 2022

    Raiser has verified that MQ 9.2.5 has suppressed these FDCs for the scenarios they were interested in.


    Default configuration was changed in 9.2.0 to remove need for control via environment variables.

  • Guest
    Reply
    |     Jun 8, 2020

    We expect a future version of MQ to remove the need for any configuration (env var or ini file) to suppress these FDCs

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