An intrusion-tolerance middleware model based on the interceptor was proposed

with a component named intrusion-tolerance framework which logically divided the intrusion-tolerance functions into service providers and service management.The system analyses were designed by adapting intrusion tolerance security model and element technology

the theory of intrusion tolerance mechanism and the strategy of implementation were described

and the intrusion tolerance technology and implementation method was extracted.Finally

an intrusion-tolerance J2EE middleware was realized

built on JBoss-an open source J2EE application server platform

and was implemented through Java class load mechanism with the dynamic load of the intrusion-tolerance class.