The International Journal of Innovative Research in Computer and Communication Engineering
Firewalls have become the most essential part that is deployed on the Internet for protecting the private networks. Optimizing firewall rules is very critical for enhancing the performance of a network. The early work on firewall optimization focuses on either intra-firewall or inter-firewall optimization within one administrative domain where the privacy of firewall policies is not a concern. The main technical challenge to focus on is that firewall policies cannot be disclosed across domains because a firewall policy contains secret information and even potential security holes, which can be easily utilized by attackers.