Mengatur password pada Cisco Packet Tracer

1. Mengatur minimum password

Router(config)#security passwords min-length 8 

2. Memberikan password pada mode privillaged:

Router>en

Router#conf t
Router(config)#enable secret passwordnya

3. Memberikan password console:
Router(config)#line con 0
Router(config-line)#password konsolpassword

Router(config-line)#exec-timeout 5 0
Router(config-line)#login

4. Memberikan password pada virtual terminal (telnet):
Router(config)#line vty 0 4 
Router(config-line)#password telnet password

Router(config-line)#exec-timeout  7 0
Router(config-line)#login

5. Memberikan password pada virtual terminal (ssh):
*Syarat: Sudah mengganti hostname, membuat ip domain-name
Router(config)#ip domain-name Ridho.com
Router(config)# username admin   secretsshridho 
Router(config)#line vty 0 4 
Router(config-line)#input transport ssh
Router(config-line)#login local
Router(config-line)#exit
Router(config)#hostname R1
R1(config)#crypto key generate rsa
The name for the keys will be: R1.ridho.com
Choose the size of the key modulus in the range of 360 to 2048 for your
  General Purpose Keys. Choosing a key modulus greater than 512 may take
  a few minutes.

How many bits in the modulus [512]: "Tekan Enter"
% Generating 512 bit RSA keys, keys will be non-exportable...[OK]

6. Mengenkripsi semua password:
Router(config)#service password encryption