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MQSeries.net Forum Index » IBM MQ Security » Providing access to userID greater than 12 characters

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the_one
PostPosted: Wed Aug 15, 2012 4:54 pm    Post subject: Providing access to userID greater than 12 characters Reply with quote

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Joined: 16 Dec 2008
Posts: 22
Location: PHX, AZ

I have searched this forum and found that other people had issue with the '12 character' UserName/GroupName limit with MQ (and setmqaut), but couldnt find a concrete workaround.

In our environment, the users are provisioned on the server using eDir. AIX parameters have been tweeked to allow userID <= 16 characters.

The access has been provided to groups (setmqaut -g).

One of the user ID is 13 characters long, and gets NOT_AUTHORIZED error. Can someone suggest a way to handle such exceptions?


Env Details:
MQ 7.0.1.8
AIX 6.1
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bruce2359
PostPosted: Thu Aug 16, 2012 5:51 am    Post subject: Reply with quote

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Look toward the bottom of this:
http://publib.boulder.ibm.com/infocenter/wmqv7/v7r0/index.jsp?topic=%2Fcom.ibm.mq.amqzag.doc%2Ffa12740_.htm
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bruce2359
PostPosted: Thu Aug 16, 2012 5:52 am    Post subject: Reply with quote

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Moved to Security forum.
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the_one
PostPosted: Thu Aug 16, 2012 12:22 pm    Post subject: Reply with quote

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Joined: 16 Dec 2008
Posts: 22
Location: PHX, AZ

Bruce,

Thanks for the response. This is what i found, from the link :
Quote:
If you use a user ID of greater than 12 characters, WebSphere MQ replaces it with the value UNKNOWN. Do not define a user ID with a value of UNKNOWN.


Unfortunately, we have 3 users (yet) with this issue, one of them is part of Operations and two from development group. In other words, since MQ defaults it to UNKNOWN, we wont know which group profile should be applied.

So it kind of brings back to the same question, that whether or not there is a workaround to this situation?
(also - this same user ID is used by broker toolkit as well)

PS - In parallel, i would also start a dialogue with our eDir guys and see if they can update the network IDs for these guys. But will use it as the last resort, because updating network IDs is a pain considering its impact on various apps in the enterprise)
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Vitor
PostPosted: Thu Aug 16, 2012 12:44 pm    Post subject: Reply with quote

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the_one wrote:
So it kind of brings back to the same question, that whether or not there is a workaround to this situation?


Not that I'm aware of, and if there is I would doubt it's supported given the very clearly documented:

Quote:
A 12 character limitation applies to both group and user IDs


and

Quote:
WebSphere MQ continues to observe a 12 character restriction on all UNIX platforms.


So the software clearly restricts to 12 characters. It's indeed unfortunate that you have users with ids longer than that; it's even more unfortunate your site chose to use them without fully evaluating the impact on all the software!
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mqjeff
PostPosted: Thu Aug 16, 2012 12:57 pm    Post subject: Reply with quote

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If you switch them to using client connections, you can tie each >12 id to a specific channel that has an MCAUSER < 12.

Or in 7.1 and later, you can do things with chlauth records to map ids.
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bruce2359
PostPosted: Fri Aug 17, 2012 5:45 am    Post subject: Reply with quote

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My curiosity has gotten the best of me.

What (policy) drove your organization to userids greater than 12 characters? I sense an auditor at play.

I've worked with some very large organizations, and all seemed satisfied with the nearly-infinite number of possible userids that 8 characters yield.
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the_one
PostPosted: Mon Aug 20, 2012 4:53 pm    Post subject: Reply with quote

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Location: PHX, AZ

bruce2359 wrote:
What (policy) drove your organization to userids greater than 12 characters? I sense an auditor at play.


Its been in place for (at least 7 )years that way, and didn't hear much issues from other app teams.

But now, with our organization exploring eDir options, such as single-sign-on and fan-out drivers, i am sure others will hit the wall as well
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bruce2359
PostPosted: Mon Aug 20, 2012 8:39 pm    Post subject: Reply with quote

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Location: US: west coast, almost. Otherwise, enroute.

If memory serves... eDir (from Novell) uses distinguished name (DN) up to 256 characters long. It also allows for aliases. The alias could be 12 characters (or less) to fit WMQs 12 character id max.

And thus ends my recollection of eDir. Over.
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