What is a Cisco switch used for? Cisco Router and switch, both are the connecting devices in networking. Where a router chooses the smallest path for a packet to reach its destination, a switch stores the arrived packets, process it and forwards it to the specified destination.

What are Cisco firewalls? A firewall is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules. Firewalls have been a first line of defense in network security for over 25 years. They establish a barrier between secured and controlled internal networks that can be trusted and untrusted outside networks, such as the Internet.