CCNA Cisco Certified Network Associate Study Guide - FTP Server

console Primary terminal line
vty Virtual terminal
Command-Line Interface 193
Aux Is used to set the user-mode password for the auxiliary port. This
is typically used for configuring a modem on the router but can be used as
a console as well.
Console Is used to set a console user-mode password.
Vty Is used to set a Telnet password on the router. If the password is not
set, then Telnet cannot be used by default.
To configure the user-mode passwords, you configure the line you want and
use either the login or no login command to tell the router to prompt for
authentication.
Auxiliary Password
To configure the auxiliary password, go to global configuration mode and
type line aux ?. Notice that you only get a choice of 0–0 because there is only
one port.
Router#config t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#line aux ?
First Line number
Router(config)#line aux 0
Router(config-line)#login
Router(config-line)#password todd
It is important to remember the login command, or the auxiliary port won’t
prompt for authentication.
Console Password
To set the console password, use the command line console 0. However,
notice that when we tried to type line console 0 ? from the aux line configuration,
we got an error. You can still type line console 0 and it will
accept it; however, the help screens do not work from that prompt. Type
“exit” to get back one level.
Router(config-line)#line console ?
% Unrecognized command