On Wed, 7 Jan 2009 12:57:39 -0700, David Logan 
<[email protected]> wrote:

>If that's the case, why doesn't it drop my AS/400 sessions? Why doesn't it
>drop my VSE sessions to the same physical machine? Why doesn't it drop 
my VM
>session? Why does it only drop my z/OS 1.4, 1.5, 1.8 and 1.9 sessions?

Perhaps the firewall already has exceptions for your non-z/OS systems?

If you see FIN packets flowing in both directions at the same time, you can be 
certain that it is a firewall doing the closing.  Each side usually sees what 
it 
thinks is a normal close by the other end closed the connection - sneaky 
firewall.

If the FW folks are disclaiming responsibility, bring in the network techs to 
get 
sniffer traces on both sides of the firewall.  That is the only way to be 100% 
sure.

---
Alan Altmark
IBM z/VM Development

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