We do have a brand new ESB environment including two IS - one internal (INTERNAL_IS) and one in the DMZ (EXTERNAL_IS). As I can see, the connection from the INTERNAL_IS to the EXTERNAL_IS in the DMZ works fine (no Errors/Alarms in the Logs).
Unfortunately, I do not get any response when I try to invoke a service through the IS in the DMZ using the Internet Explorer (nothing happens). I tried to invoke a simple service (without any input parameters) which is includes in the Package WMArt:
does not work: