Design and implementation of firewall simulation based on SSFNet

In this paper, we design and implement a packet-filtering firewall on a famous simulation framework, SSFNet. One major drawback of many existing firewall simulator is not to be anble to present the dynamic behavior of simulation environment. The firewall implemented in this paper does he able to present its dynamic behavior as well as static behavior. We simulated the firewall module with several scenarios that represent famous harmful accesses to the Internet resources.