The of Cisco is a router, a device that connects other devices (e.g. computer, mobile, television) either wirelessly or with a cable, and shares internet access. It needs to be connected to a modem to access the internet. It supports VDSL2, which is the most modern internet connection technology. It offers higher data download and upload speeds compared to ADSL2+ (usually up to 50Mbps and 5Mbps) that can support triple play services (television, telephone, internet). It requires a corresponding connection technology from the provider.
The device has the ability to configure a VPN (Virtual Private Network) so that traffic from all devices on our network passes through it. The VPN acts as an intermediary between us and the rest of the internet, giving us the ability to appear geographically in another country and the pages we visit see the VPN address as the visitor's address instead of our own. This provides us with anonymity and access to content with geographic restrictions. VPN services are usually paid with a subscription.

With MAC address filtering, it allows specific devices to connect based on their unique MAC address, excluding any device with a MAC address that has not been defined as acceptable.