The Implementation of Packet Intercept Based on Windows
Abstract
The implementation of packet intercept based on windows is mainly a course of data packet filtering through network level to achieve an optional control of data stream updating to or downloading from the net. To fulfill this goal, there should be firstly established rules to define which kinds of packet are allowed to go. If a program is refused to access the network, it cannot send any data to the network.
The main idea of data packet filtering is to intercept data packet. And by analyzing data packet, especially by checking source address, destination address, port number and protocol status of every data packet in data stream, it is then decided whether or not to let go the data packet, which help us achieve the goal of protecting the computer.