Vpn; Chapter 16 Vpn; Overview; What You Can Do In The Vpn Screens - ZyXEL Communications P-661HNU Manual

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H A P T E R

16.1 Overview

A virtual private network (VPN) provides secure communications between sites
without the expense of leased site-to-site lines. A secure VPN is a combination of
tunneling, encryption, authentication, access control and auditing. It is used to
transport traffic over the Internet or any insecure network that uses TCP/IP for
communication.
Internet Protocol Security (IPSec) is a standards-based VPN that offers flexible
solutions for secure data communications across a public network like the
Internet. IPSec is built around a number of standardized cryptographic techniques
to provide confidentiality, data integrity and authentication at the IP layer. The
following figure is an example of an IPSec VPN tunnel.
Figure 94 VPN: Example

16.1.1 What You Can Do in the VPN Screens

• Use the Setup screen
policies and add, edit or remove a VPN policy.
• Use the Monitor screen
current active VPN connections.
P-661HNU-Fx User's Guide
VPN Tunnel
X
(Section 16.2 on page
(Section 16.5 on page
16

VPN

Y
220) to view the configured VPN
228) to display and manage the
217