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MQSeries.net Forum Index » General IBM MQ Support » chlauth rules precedence

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mq__quest
PostPosted: Mon May 26, 2025 10:29 am    Post subject: chlauth rules precedence Reply with quote

Acolyte

Joined: 21 Aug 2017
Posts: 52

Hello Experts,

I need some help understanding how CHLAUTH rules are prioritized in IBM MQ.

If I create multiple CHLAUTH rules?such as SSLPEERMAP, ADDRESSMAP, and QMGRMAP?for the same channel (all using the full channel name), which rule takes precedence?

Appreciate your guidance.
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bruce2359
PostPosted: Mon May 26, 2025 6:05 pm    Post subject: Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 9475
Location: US: west coast, almost. Otherwise, enroute.

A quick google search for 'CHLAUTH PRECEDENCE' resulted in a variety of hits. I like this one https://www.ibm.com/support/pages/system/files/inline-files/Techdoc-7041997-4-CHLAUTH%20_0.pdf
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mq__quest
PostPosted: Tue May 27, 2025 3:12 am    Post subject: Reply with quote

Acolyte

Joined: 21 Aug 2017
Posts: 52

Thanks for the response, Bruce.

I reviewed that document, and it explains which rules take precedence based on the rule name. It?s clear that the rule with the most specific name takes precedence.

However, my question is slightly different: when multiple rules with the same name exist?such as sslpeermap, addressmap, and qmgrmap?which type of rule takes precedence?
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fjb_saper
PostPosted: Tue May 27, 2025 9:28 am    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20763
Location: LI,NY

mq__quest wrote:
Thanks for the response, Bruce.

I reviewed that document, and it explains which rules take precedence based on the rule name. It?s clear that the rule with the most specific name takes precedence.

However, my question is slightly different: when multiple rules with the same name exist?such as sslpeermap, addressmap, and qmgrmap?which type of rule takes precedence?


Google for a blog from Morag Hughson that details the precedences very well.

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hughson
PostPosted: Thu May 29, 2025 3:31 am    Post subject: Reply with quote

Padawan

Joined: 09 May 2013
Posts: 1964
Location: Bay of Plenty, New Zealand

Have a read of this presentation, starting at page 9

WebSphere MQ CHLAUTH - including V8 changes

Cheers,
Morag
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