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MQSeries.net Forum Index » Archives - All » Any Risk to System Queues by Enabling List Queues Feature?

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kdjasper
PostPosted: Tue Sep 28, 2004 7:20 pm    Post subject: Any Risk to System Queues by Enabling List Queues Feature? Reply with quote

Guest




Hi Roger.

I have crossed the system security hurdle by using BlockIP2 security exit to ensure that only legitimate users are connecting via MQ Visual Browse and MQ Visual Edit. In doing so, I chose to leave the MCAUSER blank on the MQCLIENT.SVRCONN channel I created for using MQVB & MQVE, as I feel confident in how tight I have the rules in the BlockIP2 config file (doing so returns a 2063 security error for invalid userids rather then 2035 within MQVB & MQVE). Also, having it set up this way I get "connection refused" in the BlockIP2 log rather then "connection accepted" for invalid access attempts. I did, however, change MCAUSER=NoBody on both the SYSTEM.AUTO.SVRCONN and SYSTEM.DEF.SVRCONN channels for security reasons.

In order for userids not in the mqm group (Windows 2000 Server) to list the queues, I needed to do the following as I discovered at: http://www.mqseries.net/phpBB2/viewtopic.php?t=16579

Quote:
Also, here are the commands for you to partially list queues (with a mask).Code:
setmqaut -m TESTQM -t qmgr -g mqmon +dsp +allmqi
setmqaut -m TESTQM -t q -n SYSTEM.** -g mqmon +dsp +allmqi


My question is, what risk is there in letting authorized users have +allmqi to the system queues with MQVE? I am a new MQ Admin having no formal training, but I am not sure if I am comfortable with users having this ability (I know I can take it away, but then they will get 2035 error when trying to list the queues). Is +allmqi needed on ALL system queues (SYSTEM.**) for the pcf command to work and retrieve the queue list, or can a subset be used? I was able to trim it down to the following and have it work, but was hoping to trim it down to as few system queues as possible.

Code:
setmqaut -m TESTQM -t q -n SYSTEM.** -g mqmon +dsp +get +put +inq +set


Thanks for the help
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RogerLacroix
PostPosted: Tue Sep 28, 2004 9:30 pm    Post subject: Reply with quote

Jedi Knight

Joined: 15 May 2001
Posts: 3252
Location: London, ON Canada

Hi,

For MQ Visual Edit / Browse only need access to 'SYSTEM.ADMIN.COMMAND.QUEUE' and 'SYSTEM.DEFAULT.MODEL.QUEUE' for the 'List of Queues' function. If so you really want to tighten down security then do the following 2 commands instead of your SYSTEM.** command:
Code:
setmqaut -m TESTQM -t q -n SYSTEM.ADMIN.COMMAND.QUEUE -g mqmon +dsp +get +put +inq
setmqaut -m TESTQM -t q -n SYSTEM.DEFAULT.MODEL.QUEUE -g mqmon +dsp +allmqi

I don't believe you need the '+set' parameter for the 'SYSTEM.ADMIN.COMMAND.QUEUE' queue.

Regards,
Roger Lacroix
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kdjasper
PostPosted: Wed Sep 29, 2004 8:04 am    Post subject: Thanks! Reply with quote

Guest




Roger, you are right on top of things!

I changed security per your suggestion, and it works beautifully. Much nicer from a user perspective to not see all those system queues listed. From an Admin perspective I am more relaxed without allowing puts to all the system queues.

Cheers!
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RogerLacroix
PostPosted: Thu Sep 30, 2004 12:35 pm    Post subject: Reply with quote

Jedi Knight

Joined: 15 May 2001
Posts: 3252
Location: London, ON Canada

kdjasper,

I did a little more testing and got the 2 rules down to:
Code:
setmqaut -m TESTQM -t q -n SYSTEM.ADMIN.COMMAND.QUEUE -g mqmon +dsp +inq +put
setmqaut -m TESTQM -t q -n SYSTEM.DEFAULT.MODEL.QUEUE -g mqmon +dsp +inq +get


Regards,
Roger Lacroix
Capitalware Inc.
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