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Secure Remote Access Technical Solution Guide v1.0

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Figure 3: Active/active HA solution

See the VPN Gateway BBI Application Guide or CLI Application Guide for configuration

information about DNS round robin integration, clustering, and Nortel Application Switch

integration.

Design recommendation: For remote access environments with large numbers of users, high

traffic volumes, or those that support critical applications, employ an active/active topology,

including VPN Gateway clustering and dual Application Switches. When designing highly resilient

VPN solutions, the network infrastructure, including DNS and AAA services, must also be

designed using high-availability architectures.

4.2.2 Application access

4.2.2.1 Clientless Mode

When possible, use Clientless Mode for providing application access. Clientless Mode is simple

and provides a high degree of access control, down to the individual file-share directory and web

URL path level. Clientless Mode can also provide application-level auditing and logging of every

object requested, if such detail is needed.

Clientless Mode requires web-based applications (examples include Microsoft Outlook Web

Access and Lotus iNotes). Many enterprise-class applications have web front ends or interface

options.

Another benefit of Clientless Mode is that it supports a wide range of client platforms and has

minimal dependencies, as no additional ActiveX or Java applets are required.

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Avaya Secure Remote Access Manual de usuario Pagina 19