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MQSeries.net Forum Index » General IBM MQ Support » exclusive use of a SVRCONN channel

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sebastia
PostPosted: Fri Aug 04, 2006 8:44 am    Post subject: exclusive use of a SVRCONN channel Reply with quote

Grand Master

Joined: 07 Oct 2004
Posts: 1003

Hi !
If we are using a MQ (server) from few external MQ Client(s),
is there a way to force that this SVRCONN connection to be exclusive,
so two clients can NOT connect to the same queues simultaneously ?

Thanks a lot.
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bbburson
PostPosted: Fri Aug 04, 2006 11:27 am    Post subject: Reply with quote

Partisan

Joined: 06 Jan 2004
Posts: 378
Location: Nowhere near a queue manager

In our setup we use a single SVRCONN channel for all clients to access a given queue manager. The channel is SSL enabled, and the effective userid is derived from the CN= attribute on the client's certificate (using a channel security exit). Individual queue authorizations are set such that client A cannot open client B's queues.

This may not directly answer your question but maybe it will spark an idea you can use.
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sebastia
PostPosted: Fri Aug 04, 2006 11:34 am    Post subject: Reply with quote

Grand Master

Joined: 07 Oct 2004
Posts: 1003

Thanks, Bruce
But we are still NOT using SSL ...
all machines are within own network,
so there is not much reason fot it (yet).
Thanks anyway.
S.
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jefflowrey
PostPosted: Fri Aug 04, 2006 3:16 pm    Post subject: Reply with quote

Grand Poobah

Joined: 16 Oct 2002
Posts: 19981

Without SSL, there's nothing you can do to prevent machine A from connecting to Channel B, or Machine B from connecting to Channel A.

Well.

You could use a security exit.

Or WebSphere MQ Extended Security Edition.
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sebastia
PostPosted: Fri Aug 04, 2006 3:18 pm    Post subject: Reply with quote

Grand Master

Joined: 07 Oct 2004
Posts: 1003

No, I want to prevent a SECOND client to connect to the server
while the first did not end yet !!!
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jefflowrey
PostPosted: Fri Aug 04, 2006 3:22 pm    Post subject: Reply with quote

Grand Poobah

Joined: 16 Oct 2002
Posts: 19981

You will need an exit of some kind - even with SSL you can't prevent a single app or machine from making more than one connection to the same channel.

Essentially every channel is actually only a channel definition. Each individual connection establishes a new instance of a particular channel, and there's no way you can limit this by who's at the other end.
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sebastia
PostPosted: Fri Aug 04, 2006 3:23 pm    Post subject: Reply with quote

Grand Master

Joined: 07 Oct 2004
Posts: 1003

And the limit HAS TO BE in the channel,
as the OPEN_EXCLUSIVE works only on a queue,
but second client can go to a second queue,
and we dont want that !
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jefflowrey
PostPosted: Fri Aug 04, 2006 3:25 pm    Post subject: Reply with quote

Grand Poobah

Joined: 16 Oct 2002
Posts: 19981

Then you need an exit.

You might be able to get away with an API exit that only looks at MQCONNs.

But you probably need a channel exit.
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PeterPotkay
PostPosted: Fri Aug 04, 2006 5:44 pm    Post subject: Reply with quote

Poobah

Joined: 15 May 2001
Posts: 7722

The Capitalware MQAUSX solution will work for you.
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Keep Calm and MQ On
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sebastia
PostPosted: Sun Aug 06, 2006 9:24 am    Post subject: Reply with quote

Grand Master

Joined: 07 Oct 2004
Posts: 1003

Peter : can you explain
"Capitalware MQAUSX"
a little bit more ?

May be a URL ???

()

I shall use Google once more ....
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fjb_saper
PostPosted: Sun Aug 06, 2006 10:23 am    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY

Look at the Capitalware forum on this site.
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RogerLacroix
PostPosted: Mon Aug 07, 2006 9:00 pm    Post subject: Reply with quote

Jedi Knight

Joined: 15 May 2001
Posts: 3264
Location: London, ON Canada

sebastia wrote:
Peter : can you explain
"Capitalware MQAUSX"
a little bit more ?

May be a URL ???

Hi,

MQ Authenticate User Security Exit (MQAUSX) is a solution that allows a company to fully authenticate a user who is accessing a WebSphere MQ resource. It verifies the User's UserID and Password against the server's native OS system or a remote LDAP server.

One of its many features is the ability to limit / control the number of channel connections.

For more information about MQAUSX go to:
http://www.capitalware.biz/mqausx_overview.html

Regards,
Roger Lacroix
Capitalware Inc.
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