Web Cache - Nortel Enterprise Edge 2.0 Programming Manual

228 Configuring Enterprise Edge Services

Web cache

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.
With Enterprise Edge configured as a web proxy with web caching:
• LAN workstations have shorter download times.
• The system stores previously downloaded information 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cached or if the cached file is out of date compared to the information on the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.
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 only 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:
• You cannot use a web server installed in Enterprise Edge as a general-purpose
HTTP server. It is only used by the Enterprise Edge web-based management
client and web-cache services.
• If users must run their web sites, they must run a separate HTTP server on a
system different from Enterprise Edge and make its IP address known to the
users of that site.
To configure the web cache settings:
1. On the navigation tree, choose Services and click on the Web Cache heading.
The Web Cache Summary screen appears.
2. Configure the Web Cache attributes according to the table below:
Attribute
Description
Version
Status
Enterprise Edge 2.0 Programming Operations Guide
Description
Shows the description of the Web Cache server.
Shows the version of the Web Cache server.
Shows the status of the Web Cache server.
This setting is read-only. The server always runs to provide support for
web-based UIs for Enterprise Edge.
P0911588 Issue 01