Introduction To Virtual Private Networking - D-Link DI-711 User Manual

computers. A hub simply takes any data arriving through each port and
forwards the data to all other ports. A switch is more sophisticated, in that a
switch can determine the port that each piece of data is supposed to be
delivered to. A switch minimizes network traffic and speeds up the
communication over a network.
Networks take some time in order to plan and implement correctly.
There are many types of scenarios to consider which could affect the
operability of a network.

Introduction to Virtual Private Networking

Virtual Private Networking (VPN) uses a publicly wired network (the
Internet) to securely connect two different networks as if they were the
same network. For example, an employee can access the corporate network
from home using VPN, allowing the employee to access files and printers.
Here are several different implementations of VPN that can be used.
Point-to-Point Tunneling Protocol (PPTP)
PPTP uses proprietary means of connecting two private networks over the
Internet. PPTP is a way of securing the information that is communicated
between networks. PPTP secures information by encrypting the data inside
of a packet.
IP Security (IPSec)
IPSec provides a more secure network-to-network connection across the
Internet or a Wide Area Network (WAN). IPSec encrypts all
communication between the client and server whereas PPTP only encrypts
the data packets.
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