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SonicOS 6.2 Admin Guide

WAN Acceleration

Using WAN Acceleration

About WAN Acceleration

The WAN Acceleration service allows you to accelerate WAN traffic between a central site and a branch site by using Transmission Control Protocol (TCP), and Windows File Sharing (WFS). The SonicWall WXA series appliance is deployed in conjunction with a SonicWall NSA series appliance. In this type of deployment, the NSA series appliance provides dynamic security services, such as attack prevention, Virtual Private Network (VPN), routing, and Web Content Filtering. The WAN Acceleration service can increase application performance.

WXA Clustering

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NOTE: WXA Clustering is supported on NSA 2600 and higher appliances.

SonicOS supports WXA Clustering with two or more appliances. The largest SonicWall WXA appliances can support up to 1200 connections, which roughly translates into support for as many as 240 concurrent users. The number of supported users is now increased with WXA Clustering:

SonicOS can monitor or probe multiple WXA appliances simultaneously and store a friendly name for each WXA.
SonicOS implements three forms of load sharing: TCP Acceleration, Unsigned SMB acceleration, and Web Cache.
A VPN Policy can be assigned to always use the same WXA group.
The number of connections is spread equally across all WXA appliances in a group.
When one of the WXAs reaches the connection capacity, the next WXA in the group is used.

WAN Acceleration Management Interface Pages

This section contains a brief overview of the following WAN Acceleration management interface pages:

For detailed information about the WAN Acceleration service, clustering, and configuration procedures, see the SonicWall WAN Acceleration OS 1.3.2 Administration Guide for SonicOS 6.2.

WAN Acceleration > Summary

The WAN Acceleration > Summary page:

Allows you to enable WAN Acceleration and configure its interface.
Displays the licensed connections.
Provides a dashboard view of:
Active connections.
WXA status.
Displays the following:
VPN policies.
SSL VPN NetExtender WAN Acceleration clients (WXAC).
Route policies.
Connections monitor.

For detailed information about the WAN Acceleration service and configuration procedures, please see the SonicWall WXA Administration Guide for SonicOS 6.2.

WAN Acceleration > TCP Acceleration

The WAN Acceleration > TCP Acceleration page provides options to configure and monitor the TCP Acceleration service.

The TCP Acceleration service is a process that decreases the amount of data passing over the WAN by using compression, which accelerates selected traffic passing between a central site and a branch site. The selected traffic is stored in the SonicWall WXA series appliances’ shared databases as blocks of data and tagged with reference indexes. This allows the WXA series appliances to only send the reference indexes (which are smaller in size) over the WAN instead of the actual data.

For detailed information about the WAN Acceleration > TCP Acceleration service and configuration procedures, please see the SonicWall WXA Administration Guide for SonicOS 6.2.

WAN Acceleration > WFS Acceleration

The WAN Acceleration > WFS Acceleration page provides options to configure and monitor the WFS Acceleration service.

The WFS Acceleration service can be configured to use Unsigned and/or Signed SMB. Unsigned SMB is used for networks that do not require traffic signing. Signed SMB is used for networks that require traffic signing for security reasons, and provides two configuration modes for the WFS Acceleration service:

Basic – Provides basic WFS Acceleration configuration options for a quick and easy deployment of the WFS Acceleration feature.
Advanced – Provides detailed WFS Acceleration configuration options for the domain details and file shares.

For detailed information about the WAN Acceleration > WFS Acceleration service and configuration procedures, please see the SonicWall WXA Administration Guide for SonicOS 6.2.

WAN Acceleration > Web Cache

The WAN Acceleration > Web Cache page provides options to configure and monitor the Web Cache service.

The Web Cache feature stores copies of Web pages passing through the network that are frequently and recently requested. So when a user requests one of these Web pages, it is retrieved from the local Web cache instead of the Internet, saving bandwidth and response time. Minimal, Moderate, and Aggressive caching strategies are available, which objects are placed into the Web cache and how long they stay there.

For detailed information about the WAN Acceleration > Web Cache service and configuration procedures, please see the SonicWall WXA Administration Guide for SonicOS 6.2.

WAN Acceleration > System

The WAN Acceleration > System page provides options to monitor and configure the System Status, Interface Status, Management, Settings, and Firmware.

For detailed information about the WAN Acceleration > System and configuration procedures, please see the SonicWall WXA Administration Guide for SonicOS 6.2.

WAN Acceleration > Log

The WAN Acceleration > Log page lists of the SonicWall WXA series appliance’s log event messages.

For detailed information about the WAN Acceleration > Log service and configuration procedures, please see the SonicWall WXA Administration Guide for SonicOS 6.2.