I will now post on configuring telnet password. and then this is configuration Procedure
In this example, passwords are configured for users attempting to connect to the router on the VTY lines using Telnet.
From the privileged EXEC (or "enable") prompt, enter configuration mode and enter username/password combinations, one for each user for whom you want to allow access to the router:
router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
router(config)#username telkom password bandung
router(config)#username spilner password jakarta
router(config)#username ahri password karawang
Switch to line configuration mode, using the following commands. Notice that the prompt changes to reflect the current mode.
router(config)#line vty 0 4
router(config-line)#
Configure password checking at login.
router(config-line)#login local
Exit configuration mode.
router(config-line)#end
router#
%SYS-5-CONFIG_I: Configured from console by console
Note: In order to disable auto Telnet when you type a name on the CLI, configure no logging preferred on the line that is used. While transport preferred none provides the same output, it also disables auto Telnet for the defined host that are configured with the ip host command. This is unlike the no logging preferred command, which stops it for undefined hosts and lets it work for the defined ones.
Verify the Configuration
Examine the configuration of the router to verify that the commands have been properly entered:
show running-config - displays the current configuration of the router.
router#show running-config
Building configuration...
!
!--- Lines omitted for brevity
!
username telkom password 0 bandung
username spilner password 0 jakarta
username ahri password 0 karawang
!
!--- Lines omitted for brevity
!
line con 0
line 1 8
line aux 0
line vty 0 4
login local
!
end
Here is a sample output if the address of interface ethernet 0 were 10.1.1.1:
router#telnet 10.1.1.1
Trying 10.1.1.1 ... Open
User Access Verification
From the privileged EXEC (or "enable") prompt, enter configuration mode and enter username/password combinations, one for each user for whom you want to allow access to the router:
router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
router(config)#username telkom password bandung
router(config)#username spilner password jakarta
router(config)#username ahri password karawang
Switch to line configuration mode, using the following commands. Notice that the prompt changes to reflect the current mode.
router(config)#line vty 0 4
router(config-line)#
Configure password checking at login.
router(config-line)#login local
Exit configuration mode.
router(config-line)#end
router#
%SYS-5-CONFIG_I: Configured from console by console
Note: In order to disable auto Telnet when you type a name on the CLI, configure no logging preferred on the line that is used. While transport preferred none provides the same output, it also disables auto Telnet for the defined host that are configured with the ip host command. This is unlike the no logging preferred command, which stops it for undefined hosts and lets it work for the defined ones.
Verify the Configuration
Examine the configuration of the router to verify that the commands have been properly entered:
show running-config - displays the current configuration of the router.
router#show running-config
Building configuration...
!
!--- Lines omitted for brevity
!
username telkom password 0 bandung
username spilner password 0 jakarta
username ahri password 0 karawang
!
!--- Lines omitted for brevity
!
line con 0
line 1 8
line aux 0
line vty 0 4
login local
!
end
Here is a sample output if the address of interface ethernet 0 were 10.1.1.1:
router#telnet 10.1.1.1
Trying 10.1.1.1 ... Open
User Access Verification
Username: ahri
Password:
!--- Password entered here is not displayed by the router
Password:
!--- Password entered here is not displayed by the router
Semoga bermanfaat.