A VPN short from Virtual Private Network is actually a proxy server. This means that you connect to another server and all the connections you make after you've connected to the server are encrypted and routed through that server. The VPN is usually used to bypass filters but in most of the cases, it's used to establish a secure connection between a computer and a server. The
com.android.server.vpn.remote application provides VPN functionality in an Android phone or device.