ZyXEL Communications wireless n gigbit router zyxel User Manual
NBG-460N User’s Guide
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H A P T E R
15
IPSec VPN
15.1 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.
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.
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 provides one perspective of a VPN tunnel.
Figure 128 IPSec VPN: Overview
The VPN tunnel connects the NBG-460N (X) and the remote IPSec router (Y).
These routers then connect the local network (A) and remote network (B).
These routers then connect the local network (A) and remote network (B).
15.2 What You Can Do
• Use the General screen (
) to display and manage the
NBG-460N’s VPN rules (tunnels).