Chapter 8: Vpn; About Vpn - Cisco ISA500 Series Administration Manual

VPN

About VPN

Cisco ISA500 Series Integrated Security Appliance Administrator Guide
This chapter describes how to configure Virtual Private Networks (VPN) that
allowing other sites and remote workers to access your network resources. It
includes the following sections:
• About VPN, page 232
• Configuring the Cisco IPSec VPN Server, page 233
• Configuring the Cisco IPSec VPN Client, page 238
• Configuring the Site-to-Site VPN, page 246
• Configuring the SSL VPN, page 257
• Configuring the L2TP Server, page 266
• Configuring the VPN Passthrough, page 268
• Viewing the VPN Status, page 268
To access the VPN pages, click VPN in the left hand navigation pane.
A VPN provides a secure communication channel ("tunnel") between two gateway
routers or between a remote PC and a gateway router. The security appliance
provides the following VPN solutions:
• Cisco IPSec VPN Server: The Cisco IPSec VPN Server feature allows the
security appliance to act as a head-end device in remote access VPNs. The
server pushes the security policies to remote clients, so that remote clients
have up-to-date policies in place before establishing the connections. The
server can also terminate the VPN tunnels initiated by the clients. This
flexibility allows mobile and remote users to access critical data and
applications on corporate Intranet. See
Server, page 233.
Configuring the Cisco IPSec VPN
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232