Design and Implementation of the Internet Forum Detective System
Abstract
As the internet has been developing rapidly, the internet forum has brought many convenient to the people. But at the same time, it also has been having a series of questions, such as spreads the pornography, declares the reactionary opinion, divulges the secret of technology, etc. Therefore the requirement of the Internet forum detective system has been stared in the face, and thorough analysis for the system has the extremely vital significance.
The thesis introduces the base knowledge of network, the principle of the network detecting and filter. Pointed out a method of how the data transport from the customer to the server. The thesis has analyzed the goal of internet forum detective system, the principle of system composition and the function module. The important module includes the module of capture package, module of decode, module of matching. The system proposes the broadcast characteristic of Ethernet, using the BPF technology to gain the network information in the common network environment. The system has base on Linux operation system, transferring a libpcap storeroom function to grasp the package, analyzing the content of the package and finding the bad message in order to realize the function of filter. The thesis uses the method which was referred just now to construct the system detective, and it realizes some of its functions.
Key words: The forum detecting; Libpcap; filter; BPF