The article emphasizes on discussing the two measures to protect the datum in the network:accessing control measure and information encryption measure.

The paper introduces the three kinds of threatens to campus network s safety and resolving methods, especially showing how to use the method of accessing control to safeguard the campus network

In order to take effective precautions against illegal operation of routers and strengthen the security of computer network, this paper briefly introduces some kinds of the configuration methods of access control ASN routers.

Application of extended role-based access control under the struts framework;

A lattice-based access control model;

This paper discusses the interview control model based on roles firstly,and then brings forward a model of purview assignment based on role and interview control,finally it was realized in police technological investigation managerial system.

The paper firstly introduces the actuality and preventing measure of the network security briefly,then presents the establishment of this network security system based on the logistics information platform,which includes visit control, transmit control and server security control etc.

This article introduces definition and the management content of the network information management,analyzes the security problem which the network information management involved,researches the safely visit control strategy,and proposes the network information management security skeleton.

The visit control safty and information storage safty are illustrated, with the technology backgrounel of Lotus Notes Domino.