Debugging customer firewall issues
How do you debug a firewall issue with your application at a customer site?  Currently we have an issue where Apache and Tomcat (part of the application) throw errors that sound like the firewall is blocking our attempt to accept or bind to ports on the machine.

The problem for us is we can't see what the firewall is doing, because it is managed at a corporate level.  Is there even a way to figure out if we are getting blocked or if it is an application specific issue.  This is a java application.
Debugging customer firewall issues
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How do you debug a firewall issue with your application at a customer site?  Currently we have an issue where Apache and Tomcat (part of the application) throw errors that sound like the firewall is blocking our attempt to accept or bind to ports on the machine.

The problem for us is we can't see what the firewall is doing, because it is managed at a corporate level.  Is there even a way to figure out if we are getting blocked or if it is an application specific issue.  This is a java application.