Presently,?aiming at the increasingly serious network security, the paper proposes a set of more efficient and perfect model of active defense. This model organically joins various security techniques, Toward the opening and complexity to network , has put forward an intact active defense system model, adopt the technology of the honeynet to draw the characteristic storehouse of the attack , transmit the mechanism through XML news. Firstly, the design thought of the security prevention system is described in the paper, and based on this thought, the architecture of sy...