The ServiceConfigurationEditor saves this normally. It looks normal in the
IDE as App.config. I then run the service, either from the IDE or not, and
run svcutil (VS2008) against the service to generate the proxy class and the
configuration file.
The svcutil generates a .config file that says the nettcp service has
security mode="Transport" and has all the associated entries filled in.
This didn't seem to happen before VS2008 -- is this a bug?