从工作站外部访问在Eclipse中运行的webserver

I run a web project targeted to be deployed on the Google Appengine locally from within Eclipse. So the server starts up and it can be accessed normally by typing localhost:8080 into some browser. Everything fine so far. But what I need is to access it from outside, say from a friend's machine (which obviously resides in the same wireless network). So when he types the following <my-notebook-ip-address>:8080 he should reach the locally running webserver (within Eclipse). But that doesn't work!I run a web project targeted to be deployed on