Red Hat NETSCAPE MANAGEMENT SYSTEM 6.2 - COMMAND-LINE Guida di Installazione Scaricare il pdf (Pagina 9)

2.1. The Optimum Configuration

Ideally, we would want one computer as a dedicated firewall and router. This would be a bare bones

installation, with no servers running, and only the required services and components installed. The rest of our

systems would connect via this dedicated router/firewall system. If we wanted publicly accessible servers

(web, mail, etc), these would be in a "DMZ" (De−militarized Zone). The router/firewall allows connections

from outside to whatever services are running in the DMZ by "forwarding" these requests, but it is segregated

from the rest of the internal network (aka LAN) otherwise. This leaves the rest of the internal network in

fairly secure isolation, and relative safety. The "danger zone" is confined to the DMZ.

But not everyone has the hardware to dedicate to this kind of installation. This would require a minimum of

two computers. Or three, if you would be running any publicly available servers (not a good idea initially). Or

maybe you are just new to Linux, and don't know your way around well enough yet. So if we can't do the

ideal installation, we will do the next best thing.

2.2. Before We Start

Before we get to the actual configuration sections, a couple of notes.

With Linux, there is always more than one way to perform any task. For the purposes of our discussion, we

will have to use as generic set of tools as we can. Unfortunately, GUI tools don't lend themselves to this type

of documentation. So we will be using text based, command line tools for the most part. Red Hat does

provide various GUI utilities, feel free to substitute those in appropriate places.

The next several sections have been written such that you can perform the recommended procedures as you

read along. This is the "Quick Start" in the document title!

To get ready, what you will need for the configuration sections below:

A text editor. There are many available. If you use a file manager application like gmc or nautilus, it

probably has a built in editor. This will be fine. pico and mcedit are two relatively easy to use editors

if you don't already have a favorite. There is a quick guide to Text editors in the Appendix that might

help you get started. It is always a good idea to make a back up copy, before editing system

configuration files.

•

For non−GUI editors and some of the commands, you will also need a terminal window opened.

xterm, rxvt, and gnome−terminal all will work, as well as others.

•

We'll be using a hypothetical system here for examples with the hostname "bigcat". Bigcat is a Linux desktop

with a fresh install of the latest/greatest Red Hat running. Bigcat has a full−time, direct Internet connection.

Even if your installation is not so "fresh", don't be deterred. Better late than never.

Security Quick−Start HOWTO for Red Hat Linux

2.1. The Optimum Configuration 6

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Red Hat NETSCAPE MANAGEMENT SYSTEM 6.2 - COMMAND-LINE Guida di Installazione Pagina 9