I am c# developer but i am new in network programming and driver
i need to develop an application that do that scenario
1-I have server connected to the internet and all my network client connect through it
2-when any user try to use internet the server redirect him to a log in page or web site i choose
3- block and allow users to use the internet
how could i start and what i need to learn to start doing that with help of winkp filer library .