VPN

VPN stands for Virtual Private Network. A VPN can extend a private network outside of it's physical limits so that users can access the private network even when not in range. VPNs do not keep users anonymous but they do provide extra security by encrypting the data and only allowing authenticated access across the network[1]. VPN have faced crackdowns in countries such as China and Russia[2]

References:

1: Microsoft article on VPN- https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2000/bb742566(v=technet.10)

2: Wired article on Chinese and Russian crackdowns-https://www.wired.com/story/china-russia-vpn-crackdown/