User's Manual

P-2612HW Series User’s Guide

257

CHAPTER 14

VPN

14.1 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 157 VPN: Example

14.1.1 What You Can Do in the VPN Screens

•Use the Setup screen (Section 14.2 on page 260) to view the configured VPN

policies and add, edit or remove a VPN policy.

•Use the Monitor screen (Section 14.7 on page 275) to display and manage the

current active VPN connections.

•Use the VPN Global Setting screen (Section 14.8 on page 277) to allow

NetBIOS packets passing through the VPN connection.

VPN Tunnel

Internet