International Journal of Computer Applications
With the vast internet connections, the network security gained the attention of researcher and developers. Network security is important for providing the authenticated data transfer. Network security can be achieved by the firewall. The conventional firewall acts like a filter which restricts the unauthorized traffic. Firewall is situated at the entry point of a network. In conventional firewall everyone on the protected side is trusted. To remove the shortcomings of traditional firewalls, the concept of a "Distributed firewall" has been proposed.