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Virtual Private Network (PPTP) connection
Point-to-Point Tunneling Protocol (PPTP) is a network protocol that
enables the secure transfer of data between a remote client (in this
case the thin client) and an enterprise server environment by creating
a VPN across TCP/IP-based data networks such as the Internet. It
provides a password-protected path through the enterprise firewall to
the enterprise server environment in which the network and session
services required by the thin client reside.
Access to the internet requires an Internet Service Provider (ISP).
You may use any of the standard means of connecting to the ISP,
such as a dial-up modem, cable modem, or DSL modem.
You must first establish the connection to the ISP, before contacting
the enterprise PPTP VPN server. This includes dial-up access as well
as direct access through the cable modem and DSL modem paths.
Virtual Private Network (L2TP) connection
Layer Two Tunneling Protocol (L2TP) merges Microsoft’s PPTP
protocol with Cisco’s Layer Two Forwarding (L2F) protocol. L2TP is
basically the same as PPTP; the primary difference is that L2TP
supports encryption.
PPP Over Ethernet (PPPoE) connection
This is a connection from the thin client Ethernet port directly to the
enterprise intranet. No additional hardware is required.
In this configuration all network services may be used, including the
enterprise DHCP server. A DHCP server on the network may provide
not only the terminal’s IP address, but also the location of the file
server containing the software updates.