I can't find the presentations?
Could you direct me to them?
Thanks
Dave 

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 06, 2003 4:51 AM
To: [EMAIL PROTECTED]
Subject: Re: cause of channels out of sequence?



Well by the How!!?? I get the feeling you think this is impossible. 
Hope your MQ isn't setup in the same way... 

There is are a couple of interesting MQ presentations on security (more lack of...) 
and holes on ebizQ.net  

-----Original Message----- 
From: Ronald Weinger [ mailto:[EMAIL PROTECTED] 
Sent: Tuesday, August 05, 2003 7:24 PM 
To: [EMAIL PROTECTED] 
Subject: Re: cause of channels out of sequence? 


a hacker is inserting messages into your channel 
How!!?? 




                      [EMAIL PROTECTED] 
                      NK.COM                   To: 
[EMAIL PROTECTED] 
                      Sent by:                 cc: 
                      "MQSeries List"          Subject:  Re: cause of channels 
out of sequence? 
                      <[EMAIL PROTECTED] 
                      n.AC.AT> 
                      08/05/2003 11:34 
                      AM 
                      Please respond to 
                      "MQSeries List" 





Even more extreme... a hacker is inserting messages into your channel... 
causing the sender and receiver to go out of sync as the intended sender 
never sent them essages... 
      -----Original Message----- 
      From: Potkay, Peter M (PLC, IT) [ mailto:[EMAIL PROTECTED] 
      Sent: Tuesday, August 05, 2003 5:21 PM 
      To: [EMAIL PROTECTED] 
      Subject: Re: cause of channels out of sequence? 

      A more extreme case related to Steve's cause: 

      If you are upgrading MQ on Server1 and choose to uninstall/reinstall 
      MQ on Server1, and there are actively running channels to/from 
      Server1, you will have sequence # errors on the remote servers once 
      you reinstall MQ and rebuild the QM. 


            -----Original Message----- 
            From: Steve D. Perkins [ mailto:[EMAIL PROTECTED] 
            Sent: Tuesday, August 05, 2003 10:44 AM 
            To: [EMAIL PROTECTED] 
            Subject: Re: cause of channels out of sequence? 

            Deleting and then recreating the channel on one queue manager 
            and not the other will also cause this problem. 

                  -----Original Message----- 
                  From: MQSeries List [ mailto:[EMAIL PROTECTED] 
                  Behalf Of Benjamin Zhou 
                  Sent: Tuesday, August 05, 2003 8:41 AM 
                  To: [EMAIL PROTECTED] 
                  Subject: cause of channels out of sequence? 



                  Win2k, MQ5.2: 


                  Occasionally, a pair of channels between two qmgrs on 
                  different machines become out of sync, while the sender 
                  MCA tries to send a message with sequence number 1, but 
                  the receiving side is expecting a different one, say 300. 


                  While this is easy to fix, I want to understand what 
                  cause the problem. I enabled tcp/ip keep alive, set 
                  heartbeat interval to 60 sec, and discint to 600 sec. 


                  Can anyone shed some light on what's behind this 
                  out-of-sequence? 


                  thanks a lot. 


                  Benjamin Zhou 
                  State Street Corp. 




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