Nothing is shown in nagios because you dont have a hostname/service description defined on the nagios server, that matches EXACTLY what you have defined on the remote host. You also will have to read the docs on nsca and see that you will have to enable passive checks on the nagios server for that host/service.
Actually Jakkedup, if you read more carefully Hsiang mentions that one the -sending- side he’s getting the error “0 bytes sent succesfully”. Meaning that something’s going wrong at the source.
Your comments are quite useful though and they are something Hsiang should pay attention to.
Hsiang: on the receiving end you do not need a plugin. You need to have the NSCA daemon running.