1, programming based on windows sockets in Linux system

2. Research on firewall technology based on Linux.

3. Research and implementation of proxy server.

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As a bridge connecting Internet and Intranet, proxy server plays an extremely important role in the actual network. The main functions of proxy server include connection, security, caching, content filtering, access control management and so on.

The main work of this design includes:

Consult the literature and be familiar with the working principle of proxy server.

Familiar with Linux kernel programming mechanism and method, or

Familiar with Windows network programming

Use a certain language (Linux recommends C/C++, Windows recommends C++ or Delphi) to realize the proxy server.