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Cisco Systems 4.2 manual Dial-up Access Topology, Small Dial-Up Network Access

Models: 4.2

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Chapter 2 Deploy the Access Control Servers

Determining the Deployment Architecture

Figure 2-7shows ACS installations in a geographically dispersed network that contains many WLANs.

Figure 2-7 ACS in a Geographically Dispersed WLAN

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For the model in Figure 2-7, the location of ACS depends on whether all users need access on any AP, or require only regional or local network access. Along with database type, these factors control whether local or regional ACSs are required, and how database continuity is maintained. In this very large deployment model (over 50,000 users), security becomes a more complicated issue, too.

Additional Considerations for Deploying ACS in a WLAN Environment

You should also consider the following when deploying ACS in a WLAN environment, consider if:

•Wireless is secondary to wired access, using a remote ACS as a secondary system is acceptable.

•Wireless is the primary means of access, put a primary ACS in each LAN.

•The customer uses ACS for user configuration, data replication is critical.

Dial-up Access Topology

Until recently, dial-up access was the most prevalent method for providing remote access to network resources. However, DSL access and access through VPNs have largely replaced dial-up access through modems.

ACS is still used in some LAN environments to provide security for dial-up access. You can provide dial-up access for a small LAN or for a large dial-in LAN.

Small Dial-Up Network Access

In the small LAN environment, see Figure 2-8, network architects typically place a single ACS internal to the AAA client, which a firewall and the AAA client protect from outside access. In this environment, the user database is usually small; because, few devices require access to the ACS for authentication, authorization and accounting (AAA), and any database replication is limited to a secondary ACS as a backup.

Configuration Guide for Cisco Secure ACS 4.2

 

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Cisco Systems 4.2 manual Dial-up Access Topology, Small Dial-Up Network Access
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4.2 specifications

Cisco Systems, a global leader in IT and networking solutions, has consistently evolved to meet the demands of modern enterprises. One of its noteworthy offerings is Cisco Systems 4.2, a version that embodies a significant leap in networking technology and capability. With its rich set of features, Cisco Systems 4.2 caters to a wide range of industries, facilitating enhanced performance and security.

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