Cisco 配置banner消息
旗标（banner）消息可以用来警示***者。
 
Router(config)#banner ?
LINE            c banner-text c, where 'c' is a delimiting character
exec            Set EXEC process creation banner
incoming        Set incoming terminal line banner
login           Set login banner
motd            Set Message of the Day banner
prompt-timeout Set Message for login authentication timeout
slip-ppp &nbs