Answer:
The answer is VPN (Virtual Private Network)
Step-by-step explanation:
A lot of businesses use VPNs to establish a secure connection between their network and the devices used by remote workers (or just anyone in a remote location). Once connected to a VPN, employees can access the resources on the network as if they were at the office themselves.
It's thought of as a virtual tunnel. While the "tunnel" goes through the public internet, any data sent back and forth is protected by encryption.