Understanding Local Area Networks and VPNs

Flashcards covering key concepts related to Local Area Networks and Virtual Private Networks from the lecture.

Local Area Network (LAN)

A group of devices connected together in a single broadcast domain.

Broadcast Domain

A set of devices that receive broadcast messages sent by any device within that domain.

Switch

A networking device that connects devices within a LAN and manages data transmission between them.

Virtual Local Area Network (VLAN)

A logical subgroup within a network that combines multiple devices into a single broadcast domain, regardless of their physical location.

Router

A device that routes data between different VLANs or networks.

VPN (Virtual Private Network)

A secure network that encrypts data transmitted over the internet to protect communication between devices.

VPN Concentrator

A device that creates and manages VPN communications by encrypting and decrypting data.

Client-to-Site VPN

A VPN connection that allows an individual user to connect securely to a corporate network.

Site-to-Site VPN

A VPN that connects two or more networks securely over the internet.

Firewall

A network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules.