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Secure Cisco devices

October 19, 2010 by Igor Drobot Leave a Comment

Some cisco basic command to secure your device against logins.
You should execute this command always on your routers/switches.
DonĀ“t forget to replace the “cisco” password!

Set a console password to cisco:

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Router(config)#line con 0
Router(config-line)#login
Router(config-line)#password cisco

Router(config)#line con 0 Router(config-line)#login Router(config-line)#password cisco

Set a telnet password:

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Router(config)#line vty 0 4
Router(config-line)#login
Router(config-line)#password cisco

Router(config)#line vty 0 4 Router(config-line)#login Router(config-line)#password cisco

Stop console timing out:

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Router(config)#line con 0
Router(config-line)#exec-timeout 0 0

Router(config)#line con 0 Router(config-line)#exec-timeout 0 0

Set the enable password to cisco:

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Router(config)#enable password cisco
Router(config)#enable secret class
# No Plain-Text passwords more
Router(config)#service password-encryption

Router(config)#enable password cisco Router(config)#enable secret class # No Plain-Text passwords more Router(config)#service password-encryption

Filed Under: Cisco Tagged With: Cisco Router Security, Secure Telnet