Lab 2: Security Router
-----
| R1 |
-----
f0/0 │ .254
│
│
│ 192.168.10.0/24
│
.1 │
__ _
[__]|=|
/++/|_|
PC 1
! Set console password
R1(config)#line console 0
R1(config-line)#password 123
R1(config-line)#login
! Delete console password
R1(config)#line console 0
R1(config-line)#no password 123
R1(config-line)#no login
! Privilege password :
+ enable password
+ secret password
! Set enable password
R(config)#enable password 456 ! clear text
! Delete enable password
R(config)#no enable password
! Set secret password
R(config)#enable secret 789 ! hash (MD5)
! Delete secret password
R(config)#no enable secret
! Service password encryption (encrypts all clear text password to MD7)
R1(config)#service password-encryption
! Stop encryption service
R1(config)#no service password-encryption
! Set banner motd
R1(config)# banner motd #
-----------
CCNA motd
-----------
#
! Delete banner motd
R1(config)# no banner motd
! Set banner login
R1(config)# banner login #
------------
CCNA login
------------
#
! Delete banner login
R1(config)# no banner login
! Telnet
R1(config)#line vty 0 4
R1(config-line)#password abc
R1(config-line)#transport input telnet
R1(config-line)#login
R1(config)#enable secret cisco
! Disable Telnet
R1(config)#line vty 0 4
R1(config-line)#no password abc
R1(config-line)#no login
! Telnet without password
R1(config)#line vty 0 4
R1(config-line)#privilege level 15
R1(config-line)#transport input telnet
R1(config-line)#no login