Red Hat NETWORK 4.0.5 Reference Manual page 276

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C
Channel
A channel is a list of packages. Channels are used to choose packages to be installed
from client systems. Every client system must be subscribed to one Base Channel
and can be subscribed to one or more Child Channel .
Child Channel
A child channel is a Channel associated with a Base Channel but contains extra
packages.
Client System
See Registered System .
D
Digital Certificate
A client
/etc/sysconfig/rhn/systemid
verifies this certificate to authenticate the registered system before each connection.
This certificate is issued by Red Hat and passed to the system as part of the
registration process. It includes unique information about the registered system to
avoid fraudulent use.
E
Email Notification
Similar to an Errata Alert , except the information is delivered via email. If the email
notifications option is selected, notifications are sent for every Red Hat Network
component in XML format
file on registered systems. Red Hat Network
that is stored
Glossary
in the