Configuring Passwords

Works on both routers and switches.

Router(config)#enable password cisco	Sets enable password
Router(config)#enable secret class	Sets enable secret password
Router(config)#line con 0 Router(config-line)#password console Router(config-line)#login	Enters console-line mode
	Sets console-line mode password to console
	Enables password checking at login
Router(config)#line vty 0 4 Router(config-line)#password telnet Router(config-line)#login	Enters vty line mode for all five vty lines
	Sets vty password to telnet
	Enables password checking at login
Router(config)#line aux 0 Router(config-line)#password backdoor Router(config-line)#login	Enters auxiliary line mode
	Sets auxiliary line mode password to backdoor
	Enables password checking at login

Caution:

enable secret password is encrypted by default. enable password is not. For this reason, recommended practice is that you never use the enable password. Use only the enable secret password in a router configuration.

Caution:

You cannot set both enable secret and enable password to the same password. Doing so defeats the use of encryption.