Análise e simulação de firewall

Abstract

This work aims to demonstrate the importance of network security using a firewall service. It will be the theoretical review of topics important to the understanding of the subject through the available literature, such as books, manuals and guides. The simulation Firewall will run in the Packet Tracer 6.2 CISCO tool, in order to demonstrate how the firewall works using ACLs and CBAC to manage packet traffic. It is hoped that this work show the need to maintain an updated security system, mainly at the corporate level, in view of the hostility that Internet has, in addition, present the effectiveness of this tool to prevent attacks, to control and make safe the network traffic.