3Com Switch 4500 Family Manual page 19

This command is valid to users logging in through AUX and VTY user interfaces, without affecting users
logging in through the Web interface.
Note the following:
If you specify any one of the four keywords without providing the text argument, the specified
keyword will be regarded as the login information.
The banner configured with the header incoming command is displayed after a modem user logs
in successfully or after a modem user passes the authentication when authentication is required. In
the latter case, the shell banner is not displayed.
The banner configured with the header legal command is displayed when you enter the user
interface. If password authentication is enabled or an authentication scheme is specified, this
banner is displayed before login authentication.
With password authentication enabled or an authentication scheme specified, the banner
configured with the header login command is displayed after the banner configured with the
header legal command and before login authentication.
The banner configured with the header shell command is displayed after a non-modem user
session is established.
Examples
# Configure banners.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] header login %Welcome to login!%
[Sysname] header shell %
Input banner text, and quit with the character '%'.
Welcome to shell!%
[Sysname] header incoming %
Input banner text, and quit with the character '%'.
Welcome to incoming!%
[Sysname] header legal %
Input banner text, and quit with the character '%'.
Welcome to legal!%
The character % is the starting/ending character of text in this example. Entering % after the
displayed text quits the header command.
As the starting and ending character, % is not a part of a banner.
# Test the configuration remotely using Telnet. (only when login authentication is configured can the
login banner be displayed).
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