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1. ROUTER PASSWORDS
HOW TO SECURE ROUTER CONSOLE PORT:
Router>enable
Router#config t
Router(config)#line console 0
Router(config-line)#password cisco
Router(config-line)#login
HOW TO SECURE ROUTER PRIVILEDGE MODE & ENABLING
THE ENCRYPTION:
Router(config)#enable password cisco
Router(config)#enable secret ccna
Router(config)#service-password encryption
HOW TO SECURE ROUTER TELNET LINES:
Router(config-line)#line vty 0 4
Router(config-line)#password cisco
Router(config-line)#login

2. HOW TO SECURE AUXILIARY PORT:
Router(config-line)#line aux 0
Router(config-line)#password cisco
Router(config-line)#login
Router(config-line)#ctrl + z
Router#