User`s guide

Configuration Software and Utilities 109
Security Information
Terminal mode access to the BMC is governed by the user name and password configuration
through the SMU; before the server will accept terminal mode commands, a session must be
established. However, a limited selection of text commands and binary hex-ASCII commands
that are assigned the lowest IPMI privilege level are available before session establishment with
the BMC.
Since the terminal mode password is sent via clear text, the terminal mode session should take
place in a secure location over a secure link, preferably via a direct connection. Connection via
a modem is supported but not recommended.
Terminal Mode Commands
Input Restrictions
Terminal mode messages are bound by the restrictions listed below.
Switching between Console Redirection and Terminal Mode
When in terminal mode, use the following key sequence to switch to console redirection:
<ESC><Q>
When in console redirection, use the following key sequence to switch to terminal mode:
<ESC><(>
Syntax
Terminal mode messages follow the general syntax:
[message data][newline sequence]
Each terminal mode message must be preceded with the left bracket start character and must be
ended with a right bracket stop character and the appropriate input newline sequence.
No input characters are accepted until the start character has been received.
Terminal mode text commands are case sensitive, but hex-ASCII commands can either use
upper or lower case letters for ASCII representations of hex digits.
Command Length
Terminal mode messages are limited to a maximum length of a 122 characters. This includes
the left and right brackets, but not control characters.
Character Support
Terminal mode messages are allowed to be composed of standard printable ASCII characters.
All other characters are treated as illegal characters.
Special Character Handling - <ESC> character
The <ESC> character can be used to delete an entire message prior to submission to the BMC
for processing. If line editing is enabled, and the <ESC> key is followed by an input newline
sequence, the BMC responds by outputting an output newline sequence. Otherwise, the BMC
goes back to looking for the start character.