Requirement
- Change hostname of R1 to USA-Router
- Configure password on console
- Configure login name and password on console
- Configure enable password
- Configure enable secret
- Configure ip addresses on both routers interfaces
- Configure password for Telnet
- Configure login name and password for telnet
| R1 configuration R1>enable R1# R1# configure terminal R1(config)# R1(config)# hostname USA-Router USA-Router(config)# USA-Router(config)#Line console 0 USA-Router(config-line)#password cisco USA-Router(config-line)#login USA-Router#exit 
USA-Router#configure terminal USA-Router(config)#username irfan password mypass USA-Router(config)#line console 0 USA-Router(config-line)#login local USA-Router#exit 
USA-Router(config)#enable password mypassword USA-Router(config)#enable secret mysecret USA-Router(config)#interface fastethernet 0/0 USA-Router(config-if)#ip address 1.1.1.1 255.255.255.252 USA-Router(config-if)#no shutdown USA-Router(config)#line vty ? <0-1340> First Line number USA-Router(config)#line vty 0 4 USA-Router(config-line)#password vtypass USA-Router(config-line)#login local USA-Router(config-line)#no login local USA-Router(config-line)#login Router 2 configuration R2#configuration terminal R2(config)#int fastEthernet 0/0 R2(config-if)#no shutdown R2(config-if)#ip address 1.1.1.2 255.255.255.252 R2(config-if)# Ctrl+c or exit R2#telnet 1.1.1.1 
| Command Help (This command Let you enter privileged or enable mode) ( > signifies user mode and # signifies that you are in enable mode) (This command Let you enter in configuration mode; You can only do configuration in this mode) (config)# signifies that you are in global configuration mode hostname command let you change host name from R1 to USA-Router Please notice that hose name has changed Entering into console line Putting password on console line login command let router ask for password when you try to enter via console. Let's check by exiting our of our router and try to re-enter. Exiting from router After giving exit command, and couple of enters. You will be prompted for password. This is a console password we just set. Please note that for security reasons your typed password will not show anything on screen; so don't get confused while working. Enter into configuration mode Set username and password for into router This command let you get into line console 0 Please look into it and try to recall; Last time when we have just given password to console; Our command was just "login" but now we have written "login local". Login local let router know that now from onward it will ask for username as well as password (User based authentication). Let exit from router and try to find out if there is any difference. Have you noticed any difference. Look under 1) Router is asking for user as well as password 2) When you have given user and password, it has just thrown you into user mode rather enable mode (look into previous image). Setting password to enter into enable mode. Try to exit from router and check; This time it will not let you in enable mode without password. Secret is an encrypted password. If you have set both password and secret. Secret will take precedence. However; you will find both in your router configuration file. Enter into interface f0/0 for ip addressing ip address has been given with mask By default, Router interface are shutdown so if you want them workable then give this command. ? is a great help, when you need to find any command or its portion put question mark. Here it shows how many line vty (telnet) line we have This command will let us in vty line 0 to 4. means now what so we do, it will get applied on only line 0 to 4. Set password on vty lines 0 to 4 login local tell router to ask for user and password if we put "no" before any command that command will get deleted or non-effective. login let router ask for only password we set. Router 2 configuration starts Enter into configuration terminal entering into interface f0/0 opening shutdown interface giving ip address to interface exiting from interface mode to enable mode Let's telnet our router 1's interface fastethernet 0/0 ip address 1.1.1.1. Telnet result shows that router 1 is asking for password due to "login" command on vty lines. if we configure "login local" command, router will ask for user and password. When we have given vty lines password. Look we have enter into USA-Router. Now we can configure or look into USA-Router configuration as per privileges . Check to verify |
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