If you want to create a subnet separate from your local area network (LAN) that filters traffic based on specific parameters, what device should you use?

To create a subnet separate from your local area network (LAN) that can filter traffic based on specific parameters, a firewall is the most suitable device. A firewall serves as a security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It can be configured to filter traffic based on various parameters, such as IP addresses, protocols, ports, and more, effectively creating a barrier between your internal network and external threats.

By deploying a firewall, you can establish different security zones within your network, which is essential when creating subnets. This allows you to enforce access control, prevent unauthorized access, and ensure that only legitimate traffic is allowed through the subnet. While routers can also segment networks, they do not inherently provide the same degree of traffic filtering and security enforcement as firewalls. Switches and hubs, on the other hand, primarily deal with forwarding traffic within a network and do not offer robust filtering capabilities. Thus, for the specific need of creating a filtered subnet, a firewall is the best choice.