Hi Thomas,
not that I know of.
We, too, would like to have a feature like this sometimes.
But not sure if this really is necessary. You may get a lot of info from operating system, even if SAP is hanging.
What comes closest:
If you have got more then one SAP instance, then you may e.g. leave the central instance out from the public logon group, and so dialog processes are left for those who know how to connect without public logon. I am not sure though how you could prevent incoming RFC connections from using these work processes.
regards