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    <p>With Windows-to-Windows connections, WMQ will pass the SID as well as the "short ID" which in this case would be "websphere". This is a little better authorization than you get with non-Windows WMQ which only uses the short ID. The problem is that someone on a non-windows server can connect using the short ID "websphere" and since there is no SID WMQ will accept the connection as thought it <em>were</em> the Windows account.</p> <p>Two ways to address this. On the QMgr host you can run setmqaut commands to authorize the SID you are actually using to connect. The VM <em>must</em> be able to inquire on the domain where the Windows account lives and the setmqaut command must use -p user@domain syntax.</p> <p>Alternatively, you can just use the locally defined ID in the MCAUSER of the channel like </p> <p>ALTER CHL(channel name) CHLTYPE(SVRCONN) MCAUSER('webaphere@vm') </p> <p>...where 'vm' is the name of the virtual machine and you've authorized the account with setmqaut commands or by putting it into the mqm or administrators group.</p> <p>Keep in mind this is <em>only</em> for testing! Any channel with a blank or administrative MCAUSER can not only administer WMQ but also execute arbitrary commands on the underlying host server. In the real world you would create accounts with access to queues and the QMgr but not access to administer and you'd put those into all MCAUSER values, then set MCAUSER('nobody') for all the SYSTEM.DEF and SYSTEM.AUTO channels.</p> <p>Lots more on this available on my web site t-rob.net in the MQ and Links pages. Also, check out:</p> <p>Comment lines: T.Rob Wyatt: <a href="http://www.ibm.com/developerworks/websphere/techjournal/0701_col_wyatt/0701_col_wyatt.html" rel="nofollow noreferrer">What you didn't know you didn’t know about WebSphere MQ security</a></p> <p>Comment lines: T.Rob Wyatt: <a href="http://www.ibm.com/developerworks/websphere/techjournal/0711_col_wyatt/0711_col_wyatt.html" rel="nofollow noreferrer">WebSphere MQ security heats up</a></p>
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