I have a network and a proxy server used by the order computes to go to the Internet and I am developping a software in Java which will be installed on my proxy. This is what I want to do: for 2 computers that want to go to the Internet, I want to prevent one from going to the Internet according to some criterias registered in my Oracle Database and let the other one go,let him surf for sometimes and then, stop him from surfing when the time is full