Red Hat NETWORK PROXY SERVER 4.1.0 -, Руководство по установке

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2 Chapter 1. Introduction
Although the packages are served by the Proxy, clients’ System Profiles and user infor-
mation are stored on the secure, central RHN Servers
1
, which also serve the RHN website
(rhn.redhat.com). The Proxy acts as a go-between for client systems and Red Hat Net-
work (or an RHN Satellite Server). Only the package files are stored on the RHN Proxy
Server. Every transaction is authenticated, and the Red Hat Update Agent checks the GPG
signature of each package retrieved from the local RHN Proxy Server.
In addition to storing official Red Hat packages, the RHN Proxy Server can be configured
to deliver an organization’s own custom packages from private RHN channels , using the
RHN Package Manager. For instance, an organization could develop its own software,
package it in an RPM, sign it with its own GPG signature, and have the local RHN Proxy
Server update all of the individual systems in the network with the latest versions of the
custom software.
Advantages of using RHN Proxy Server include:
•
Scalability — there can be multiple local RHN Proxy Servers within one organization.
•
Security — an end-to-end secure connection is maintained: from the client systems, to
the local RHN Proxy Server, to the Red Hat Network servers.
•
Saves time — packages are delivered significantly faster over a local area network than
the Internet.
•
Saves bandwidth — packages are downloaded from RHN only once (per local Proxy
Server’s caching mechanism) instead of downloading each package to each client sys-
tem.
•
Customized updates — create a truly automated package delivery system for custom
software packages, as well as official Red Hat packages required for the client systems.
Custom private RHN channels allow an organization to automate delivery of in-house
packages.
•
Customized configuration — restrict or grant updates to specific architectures and OS
versions.
•
Only one Internet connection required — Because clients connect only to the RHN
Proxy Server and not the Internet, they require only a Local Area Network connection
to the Proxy. Only the RHN Proxy Server needs an Internet connection to contact the
RHN Servers, unless the RHN Proxy Server is using a RHN Satellite Server, in which
case only the RHN Satellite Server requires an Internet connection.
1. Throughout this document, "RHN" may refer to either RHN’s Hosted site (http://rhn.redhat.com)
or an RHN Satellite Server.