Different types of passwords that can be used in CISCO routers include :
Enabled : This is a global command that disables privileged execution mode. The password is not encrypted. To change it, one can use "enable password password"
Enable Secret : In place of an enable password, this secret password is used. To change it, one can use "enable secret password".
AUX (Auxiliary) : Passwords for auxiliary ports can be set using an auxiliary password. Through a modem, a router can be accessed via this port.
Console : Console port passwords are set using the console password.
VTY (Virtual Terminal) : For Telnet sessions into the router, you will need the virtual terminal password. Passwords can be changed at any time. You can set it up when you configure the router from the console.
