Let’s have a look at how Cisco IOS handles authentication and how passwords arestored in the configuration file. Disable Cleartext Passwords in the Configuration File Let’s I set the “front-door password” for console access that would put the userin user EXEC mode: ISR4321# conf tISR4321(config)# line console 0ISR4321(config-line)# password foobarbazISR4321(config-line)# loginISR4321(config-line)# ^Z ISR4321# sh run | b lineline con 0!line aux 0!line vty 0 4 password foobarbaz loginli...