Domains Inside Firewall and Local Domains Inside the Firewall

See "To View or Modify Proxy Cascade Properties" for a description of the properties described in this section.

If you have a hierarchy of proxy cache servers, you can use the Netra j proxy cache software's "local domain" features, illustrated in the following figure.

Figure B-1 Example of Use of Local Domain Property

Legend:

1. DNS domain acme.com

2. The following DNS domains are in the geographic region of South America:

   1. chile

   2. peru

   3. brazil

   4. bolivia

3. The following DNS domains are in the geographic region of Asia:

   1. japan

   2. korea

   3. laos

   4. prc

   5. vietnam

4. The following DNS domains are in the geographic region of Europe:

   1. uk

   2. greece

   3. spain

5. Netra j proxy cache server netra_cache.uk

6. Netra j proxy cache server netra_cache.greece

In this example, the configuration for the Netra j proxy cache server netra_cache.greece (6) is as follows:

• Parent proxy/cache: netra_cache.uk

• Inside-the-firewall domain: acme.com

• Local domain inside the firewall: greece.acme.com, spain.acme.com, uk.acme.com

The effect of these configuration options for the machine netra_cache.greece is that, in general, HTTP requests containing acme.com are retrieved from the parent, netra_cache.uk. However, requests for the local domain, greece, are retrieved directly from the local web server.