Raritan Computer Home Security System 用户手册

 

Prior to version 4.0, CC-SG Diagnostic Console displays a number of 
messages on the screen each time when it boots up. These messages 
are standard Linux diagnostic and warning messages and usually do not 
imply any system problems. The table offers a short introduction to a few 
frequent messages. 

hda: 

The message indicates that something on the system is trying 
to communicate with the DVD-ROM drive. Different scenarios 
can invoke the message. For example: 

• 

A user opens or closes the DVD-ROM drive door, or 

• 

The operating system is checking the DVD-ROM drive and 
finds no media when it boots up. 

There are other scenarios that invoke the message as well but 
will not be described in the section. 

avc: 

The message comes from an internal security audit and control 
system -- SELinux sub-system. The system issues warnings 
without enforcing any security policy so they do not indicate any 
problem with the system. 

ipcontracks: 

The message always appears each time CC-SG boots up so it 
is normal. 

 

Note that CC-SG turns off these messages since version 4.0, but they 
are still available in internal logs. Therefore, when you upgrade CC-SG 
from 3.x to 4.x, these Diagnostic Console messages disappear.