Alcatel-Lucent 7210 SAS E OS System Management Manual page 87

pre-login-message
Syntax pre-login-message login-text-string [name]
no pre-login-message
Context config>system>login-control
Description
This command creates a message displayed prior to console login attempts on the console via Telnet.
Only one message can be configured. If multiple pre-login-messages are configured, the last mes-
sage entered overwrites the previous entry.
It is possible to add the name parameter to an existing message without affecting the current
pre-login-message.
The no form of the command removes the message.
Default
No pre-login-message is defined.
Parameters
login-text-string — The string can be up to 900 characters. Any printable, 7-bit ASCII characters can
name — When the keyword name is defined, the configured system name is always displayed first in
ssh
Syntax ssh
Context config>system>security
This command enables the context to configure the SSH server on the system. The server may be con-
figured as Secure Shell Version 1 (SSH1), Version 2 (SSH2) or both. This command should only be
enabled or disabled when the SSH server is disabled. This setting cannot be changed while the SSH
server is running. SSH1 and SSH2 are different protocols and encrypt at different parts of the packets.
SSH1 uses server as well as host keys to authenticate systems whereas SSH2 only uses host keys.
SSH2 does not use the same networking implementation that SSH1 does and is considered a more
secure, efficient, and portable version of SSH that includes Secure FTP (SFTP).
When the command is executed, a SSH security key is generated. This key is valid until either the
node is restarted or the SSH server is stopped with the no ssh command and restarted. The key size is
non-configurable and set at 1024 bits.
Quitting SSH while in the process of authentication is accomplished by either executing a ctrl-c or
"~." (tilde and dot) assuming the "~" is the default escape character for SSH session.
7210 SAS-E OS System Management Guide
be used. If the string contains special characters (#, $, spaces, etc.), the entire string must be
enclosed within double quotes.
the login message. To remove the name from the login message, the message must be cleared and
a new message entered without the name.
Security
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