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28 Using Enterprise Edge Services

Enterprise Edge Networking Operations Guide P0910464 Issue 01

Web Caching/Proxy

When you use Enterprise Edge as a web proxy, Enterprise Edge can store or

cache information downloaded from the Internet. A proxy is a server that acts on

behalf of another. Web caching allows LAN workstations to share common

information downloaded from the Internet.

Data is usually cached on individual workstations. Each time a workstation on the

LAN requests information from the Internet, the individual’s request is sent to the

Internet, and the information is returned to their workstation. If multiple LAN

workstations request common data, a web cache on the network reduces download

time from the Internet.

With Enterprise Edge configured as a web proxy with web caching:

• LAN workstations have shorter download times.

• Previously downloaded information is stored for future use by all workstations

on the LAN.

• Enterprise Edge retrieves information from the Internet only if it is not already

cached or if the cached file is out of date compared to the information on the

Internet.

• Cookie blocking protects users’ privacy.

You can configure the web caching settings through your web browser.

The web proxy also provides security features similarly to the DNS proxy because

it hides all of the internal browsers’ IP addresses from external web servers.

External web servers see Enterprise Edge’s IP address.

Guidelines for Using Web Caching/Proxy

The Enterprise Edge web proxy uses a web server for running in HTTP-Proxy

mode.

Consider the following guidelines when using web caching/proxy:

• A web server installed in Enterprise Edge can not be used as a general purpose

HTTP server. It is only used by the Enterprise Edge web-based management

client and web-cache services.

• If users need to run their web sites, they need to run the HTTP Server on another

system and make its IP address known to Enterprise Edge.

To set the web server as the web cache/proxy, refer to Web cache on page 126.

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Avaya EE Networking Guida Utente Pagina 28