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| Oracle Integrated Lights Out Manager (ILOM) 3.1
The host console for most operating systems is also available using a text-based, serial console. This console is available by running the start /HOST/console command at the command-line of the Oracle ILOM CLI. Similar to the graphical console, there is only a single serial console available to all Oracle ILOM users. Therefore, it is considered a shared resource. If one user logs in to the host operating system from the serial console and then terminates the console redirection without logging out, a second user of the serial console could access the previously authenticated operating system session.
Oracle ILOM sends a Data Transfer Request (DTR) signal to the host operating system when a console redirection session is terminated. Many operating systems automatically log out a user when this signal is received. However, not all operating systems have support for this feature:
Oracle Linux 5 has DTR signal support that works by default.
Oracle Linux 6 has DTR support, but it must be enabled manually.
Oracle Solaris has no support for the DTR signal. To reduce security risk, users can configure a session time-out in the host operating system.
For information about the DTR signal, see the user documentation for your host operating system.