HP SuperStack Firewall Series Manual do Utilizador descarregar pdf (Página 111)

DVANCED

ETTINGS

This chapter describes the commands and options available in the

Advanced menu.Themenuisbrokenupintosectionsshownintheuser

interface as tabs.

To access a command click on Filter on the left hand side of the screen

and then on the appropriate tab.

This following sections are covered in this chapter:

■

Automatic Proxy/Web Cache Forwarding

■

Specifying Intranet Settings

■

Setting Static Routes

■

Setting up One-to-One NAT

Automatic

Proxy/Web Cache

Forwarding

A proxy server intercepts all requests to the Web server to see if it can

fulfill the requests by returning a locally stored copy of the requested

information. If not, the proxy:

■

Completes the request to the server

■

Returns the requested information to the user

■

Saves it locally to fulfill future requests

Because of this, a proxy can improve Internet response and lessen the

load on the Internet link. For example, suppose a school is using the

Internet for a research project. A student requests a certain Web page,

and then sometime later, a second student requests the same page.

Instead of forwarding the request to the Web server where the page

resides, the proxy server returns the local copy of the page that it already

fetched for the first student.

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HP SuperStack Firewall Series Manual do Utilizador Página 111