SURVEY ON COOPERATIVE FIREWALL ANOMALY DETECTION AND REDUNDANCY MANAGEMENT

Network security is essential for protecting the private and public networks such as banking and educational zones. Network can use different kinds of security mechanism. Among this firewall is one of the security mechanisms. The Firewalls are used as a protection barrier among the two different networks. The performance of firewall is mainly based on firewall policies. The firewall policies are used to decide whether the packets can be permitted or to be refused. These rules are crucial for the operation of firewall policies. The firewall policy contains erroneous configurations like rule redundancies, errors and conflicts. Such, conflicts are resolved by various mechanisms based on their errors. The following techniques are used for some error detection and correction process like cross-domain cooperative firewall, firewall compression, firewall decision diagrams, firewall verification tool and anomaly detection tools like FAME(Firewall Anomaly Management Environment),FPA(Firewall Policy Advisor, Fireman etc.