Telnet — Telecommunication Network. A network protocol used on the Internet or on local area networks.

TFTP — Trivial File Transfer Protocol. A file transfer protocol with a subset of FTP functionality.

UDP — User Datagram Protocol. A simple transport protocol used to transfer information on the Internet.

VNC — Virtual Network Computing. A graphical desktop sharing system that uses the RFB protocol to remotely control another computer.

VPN — Virtual Private Network. A secure private network that runs over the public Internet.

VPN Passthrough — A feature that allows a client to establish a tunnel only with a specific VPN server.

WAN — Wide Area Network. A public network that extends beyond architectural, geographical, or political boundaries (unlike a LAN, which is usually a private network located within a room, building, or other limited area).

WEP — Wired Equivalent Privacy. An IEEE standard security protocol for 802.11 networks. Superseded by WPA and WPA2.

WLAN — Wireless Fidelity. Any system that uses the 802.11 standard developed and released in 1997 by the IEEE (Institute of Electrical and Electronics Engineers).

WLAN Client — A wireless device that connects to the Internet via WLAN.

WLAN — WLAN LAN. A typically low-power network that transmits a wireless signal over a span of a few hundred feet and usually only to stationary devices.

WPA/WPA2 — WLAN Protected Access. A security protocol for wireless 802.11 networks from the WLAN Alliance.

WWAN — Wireless Wide Area Network. Wireless connectivity to the Internet achieved using cellular tower technology. This service is provided through cellular providers. WWAN connectivity allows a user with a laptop and a WWAN device to surf the Internet, check email, or connect to a virtual private network (VPN) from anywhere within the regional boundaries of the cellular service.

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