WCF service hosted in WAS

[Lubomir]

Hi,
I want to host a WCF service with a protocol net.Tcp in WAS.

I did the following:
1/ Allowed WCF Non-HTTP Activation
2/ Added net.tcp binding to the default web site
3/ Enabled protocol net.tcp on the service app

When I run svcutil with a parameter:
net.tcp://localhost/MyService/Service.svc/mex I get the error:

... No connection could be made because the target machine actively refused
it ...

If I run svcutill with http and wsdl parameter, everything is fine.

It seems that WAS is not listening for TCP.
What I could be missing?

Thanks for help,

Lubomir