Danigy/CCNA_Security_Simulation

CCNA Security validates knowledge of security infrastructure, threats, and vulnerabilities to networks and threat mitigation. Required skills include installation, troubleshooting and monitoring of network devices to maintain the integrity, confidentiality, and availability of data and devices.Packet Tracer is a cross-platform visual simulation tool designed by Cisco Systems that allows users to create network topologies and imitate modern computer networks. The software allows users to simulate the configuration of Cisco routers and switches using a simulated command line interface.Graphical Network Simulator-3 is a network software emulator first released in 2008. It allows the combination of virtual and real devices, used to simulate complex networks. It uses Dynamips emulation software to simulate Cisco IOS.Network security consists of the policies and practices adopted to prevent and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources.