Red Hat NETWORK - USER 1.3, Руководство пользователя

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12 Chapter 1:What is Red Hat Network?
Update Agent
can also be configured to verify packages once downloaded.
Red Hat Update Agent
allows for a few basic configuration options such as choosing to ignore update notifications for certain
packages. The
Red Hat Network Web Application includes more features such as viewing up to
five systems simultaneously, viewing package details before downloading them, and adding a system
to your group without using the
Red Hat Network Registration Client
.
Red Hat Update Agent
is a standalone application that runs locally on your system. All the software
dependencies it requires are shipped with Red Hat Linux 7. The Red Hat Network Web Application
runs inside a SSL-enabled Web browser such as Netscape and does not have software dependencies.
The
Red Hat Network Daemon
(
rhnsd
) runs in the background as a service and probes the Red Hat
Network for notifications and updates at set time intervals (see Chapter 6, Red Hat Network Daemon
for further information).
1.1 Automatic Notifications
During registration, you can configure Red Hat Network to send you email notifications of new and
updated software packages. Automated notifications of the latest updates
• Reduce the time and effort required by system administrators to stay on top of the Red Hat errata
list
• Minimize security vulnerabilities in your network by providing the patches as soon as Red Hat
releases them
• Filter out package updates not relevant to your network
• Provide a reliable method of managing multiple systems with similar configurations
1.2 Security, Quality Assurance, and Red Hat
Network
Red Hat Network provides significant benefits to your network including security and quality assur-
ance. All transactions made between you and Red Hat Network are encrypted, and all RPM packages
are signed with Red Hat’s GNU Privacy Guard (GPG) signature to ensure authenticity.
Red Hat Network incorporates the following security measures:
1. The Red Hat Network Web Application is only accessible with the correct user name and pass-
word.
2. A Digital Certificate stored on the client system in the file
/etc/sysconfig/rhn/systemid
after registration is used to authenticate the system during each transaction between the client and
Red Hat Network.