Remote Access Using Vpn - Cisco 3.3 User Manual

Basic Deployment Factors for Cisco Secure ACS
Figure 2-6 Large Deployment of Small Sites

Remote Access using VPN

User Guide for Cisco Secure ACS for Windows Server
2-12
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For the model in Figure
whether all users need access on any AP, or whether users require only regional
or local network access. Along with database type, these factors control whether
local or regional Cisco Secure ACSes are required, and how database continuity
is maintained. In this very large deployment model, security becomes a more
complicated issue, too.
Virtual Private Networks (VPNs) use advanced encryption and tunneling to
permit organizations to establish secure, end-to-end, private network connections
over third-party networks, such as the Internet or extranets
benefits of a VPN include the following:
Cost Savings—By leveraging third-party networks with VPN, organizations
•
no longer have to use expensive leased or frame relay lines and can connect
remote users to their corporate networks via a local Internet service provider
(ISP) instead of using expensive toll-free or long-distance calls to
resource-consuming modem banks.
2-6, the location of Cisco Secure ACS depends on
Chapter 2 Deployment Considerations
(Figure 2-7). The
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