Published Paper Details:

A firewall plays a significant role as a security device for the computer hardware and software; it protects the computer network from unauthorized access through filtration and blocking access from outsiders. It filters both unwanted traffic and also blocks any malicious software from attacking the computer system. There are different levels of protection provided by firewalls. On the other hand, the software-defined network plays a role in introducing significant granularity and visibility to the networking field. However, it is supposed to undergo some changes in network security to have its operation protected from unauthorized access and malicious attacks. Security changes that can be implemented in the software-defined network include protection of the Open Flow-based networks. Protection of the Open Flow-based network involves frequent changing of the network states and traffic. Protection of the network sites and traffic can be addressed by introducing the FLOWGUARD, a comprehensive framework required to facilitate right identification and provide adequate correction of the violations in Open Flow-based networks. The FLOWGUARD system acts by checking all network flow systems in the path spaces to determine whether there is any violation of the Firewall policy during updating of the network states. The system also performs an automatic solution to the violation of the Firewall policy. Implementation of the FLOWGUARD, including its efficacy and effectiveness in the provision of resolutions to Firewall violation and the various challenges that arise in using the Open Flow system, are discussed in this paper.