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Cisco Wireless LAN Security by Andrew Balinsky, Darrin Miller, Krishna Sankar, Sri Sundaralingam

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WLAN Services Scaling

In the general 802.1x/EAP (Extensible Authentication Protocol) and virtual private network (VPN) designs, large deployments can be taxing on the scalability and availability of network services. Domain Name System (DNS) and Dynamic Host Control Protocol (DHCP) are typically already deployed in a high availability and scalability manner within enterprises due to wired LAN’s reliance on these services. The following sections discuss how to address and scale the Remote Authentication Dial-In User Service (RADIUS) and VPN gateway services.

RADIUS Best Practices

RADIUS authentication scalability and high availability is of primary concern to any network designer who must support a WLAN of any size. Several factors impact the ...

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