Someone should really do something about accessing the 192.*.*.* type of IP behind the proxy. I host a website on IIS and host in on port 8081. I have recently found that I can access 192.168.2.3:8081 (My server IP behind the router) and so can everybody else. I have no problem with it, but I think that someone who doesn't want his system accessed would want to find a way to patch this bug.