Review: Firewall Privacy Preservation By Packet Filtering Management (original) (raw)

Firewalls are fundamental elements in Internet network security. A firewall always identifies every incoming or outgoing packets and takes decision of whether to accept or discard that packet. This decision of firewall is based on its policy. A firewall is nothing but a security protector sited at the point of entry among a private web and also the outdoor network such that entire incoming and outgoing packets must pass through it. Though there is firewall rules management, mainly in multi-firewall enterprise network the management system has become a difficult and complex task. Previous search on firewall optimization concentrates on intra-firewall and inter-firewall optimization within some administrative domain in which the privacy of firewall policies is not a concern. Filtering rules of firewall have to be written, well-ordered and dispersed with care so as to avoid firewall policy anomalies which may cause vulnerability of network. Hence, inserting or updating filtering rules ...