Routers assign IP addresses, manage bandwidth, and act as a basic security firewall between your devices and the internet. Each device plays a crucial role in network security, but they also represent tempting targets for attackers. A router moves traffic between networks. It connects multiple packet-switched networks or subnetworks, managing traffic by directing packets to their intended IP addresses. Routers allow multiple devices to share an Internet connection. Network Devices are the physical appliances required for communication and interaction between computers on a computer network.