This week, we learned about routers, switches, and firewall.

Switches map MAC addresses to switch ports. Switches are also able to locate the physical locations of MAC addresses. ARP(Address Resolution Protocol) tables allow users to convert MAC Addresses into IP addresses.

Routers connect multiple devices to the Internet and also connect these devices to each other. Routers can be used to create local networks of devices. Unlike switches, routers can route connections between different networks. Routers can be classified as enterprise, consumer, custom.

Firewalls are systems created to prevent unauthorized access to or from a private network. Firewalls contain info on successful or failed connection attempts, the protocols used, and applications.