Net connection without Internet connection whoas

Hi does flash media server 2 require a connection to the internet i'm using the evaluation version on a computer which is not connected to the Internet at all I've checked my net connection strings and they are in order and these apps work on the computer that is connected to the Internet....this is a strange problem here is my netconnection string ....
my_nc.connect (" rtmp://localhost/server_test");.......what could possible be wrong.