Design And Implementation Of Computer Laboratory Access Control System Based On Isa Server

With application and popularization of the computer and network technology, more and more universities have established the computer laboratory which connect on Internet through the campus network, which mainly undertakes school computer courses of cultural foundation, computer language, graduation project, network practice and other non-computer specialized hands-on, as well as student's free hands-on practice. In order to ensure the successful completion of teaching tasks, various universities take seriously to the computer laboratory's management. However, looking the actual situation of a University Computing Center the computer laboratory's management, there are still some problems, in the medium of instruction of teachers process, a small number of students can access the network resources at will, carry on some activities without attending class the content, violate the class discipline, affect the quality of teaching.The research goal of this thesis is to develop a computer laboratory access control system based on ISA Server, the system realizes the teaching teachers to control of visiting the content of the students effectively, so the personnel of not familiar with the ISA Server management and configuration can also apply its power function to control the content of network access at any time. In this thesis, the major work done as follows:Firstly, this thesis compares to the common firewall, analyzes the major advantages of ISA Server 2006 compared with the traditional firewall, does experiment of configuration and management using ISA Server 2006, analyzes the structure of the core and process of access requests, as well as the firewall policy priority, the composition of rules and the matching process.Secondly, this system applies the object-oriented method to carry on the analysis and the design. The system analysis carries on the analysis of the functional requirements and the non-functional requirements, analyzes the architecture of the system network, establishes the system analysis model. The functional requirements carry on the analysis from the perspective of use-case. The non-functional requirements analyze properties of the software, development environment configuration requirements, external interface requirements. The system analysis model carries on the analysis from recognition class and analysis class, establish class diagram and sequence diagram. The system design mainly carries on the general design from the structure and flow, business function design includes the default rules, user-defined rules, tools, course schedule, carries on the overall structure design of the interface.Finally, the system implementation is based on the analysis and design. The system implementation includes interface implementation and the call of access rules implementation. The interface includes the creation of the default rules, default rules, tools and course schedule. The call of access rules implement creation, application, revocation, empty, and other system functions, by ISA Server SDK calling administration component object.