How to configure cisco router password
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How to configure cisco router password

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How to configure cisco router password

How to configure cisco router password

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How to configure cisco router password How to configure cisco router password Document Transcript

  • How to Configure CISCO Router Password?Passwords are used to restrict access to a CISCO router. Passwords can be given tothe virtual terminal lines and the console line. Moreover, password can be setprivileged EXEC mode. This page will provide the information to set up CISCO routerpassword to virtual terminal lines, console lines and privileged mode. Even more, youwill learn how to encrypt the password also.Why console password is required?Console password is useful on a network on which multiple people have to access tothe router. The persons who are not authorized, cant access the router. Thus itprevents unauthorized person from accessing the router.Configuring console password of a CISCO router: 1. Enter global configuration mode of the CISCO router. 2. Put the command line console 0 to the router. 3. Provide the password by using password command. For example, if you want to put password "cisco" then the command will be password cisco. 4. At last, put the command login.Commands for configuring console passwordRouter>enableRouter#config tEnter configuration commands, one per line. End with CNTL/Z.Router(config)#line console 0Router(config-line)#password ciscoRouter(config-line)#loginRouter(config-line)#Why virtual terminal password is required?Virtual terminal password refers to telnet password. Through telnet, you can accessthe router and can change anything. So, its really important to protect the use oftelnet by giving a strong password.Configuring virtual terminal password of a CISCO router:http://www.router-switch.com/
  • Different hardware has different no of vty lines defined. Cisco has the range 0 to 4vty lines. It means it has 5 vty lines. You can set the password of vty lines by thefollowing steps: 1. Enter global configuration mode of the CISCO router. 2. Put the command line vty 0 4 to the router. 3. Provide the password by using password command. For example, if you want to put password "cisco" then the command will be password cisco. 4. At last, put the command login.Commands for configuring virtual terminal passwordRouter>enableRouter#configure terminalEnter configuration commands, one per line. End with CNTL/Z.Router(config)#line vty 0 4Router(config-line)#password ciscoRouter(config-line)#loginRouter(config-line)#Why enable password is required?Enable password is required to restrict the access of privileged EXEC mode.Configuring enable password of a CISCO router:From the global configuration mode, use the command enable password to restrictaccess to privileged EXEC mode. However, this password is visible in the routersconfiguration file. To encrypt the password, enable secret command is required. Byusing enable secret command the password is encrypted and cant be readable to ahuman.Commands for configuring enable passwordEnable password:Router>enableRouter#configRouter#configure terminalEnter configuration commands, one per line. End with CNTL/Z.Router(config)#enable password ciscoRouter(config)#Perform password encryption:Router>enableRouter#configRouter#configure terminalEnter configuration commands, one per line. End with CNTL/Z.Router(config)#enable secret ciscoRouter(config)#http://www.router-switch.com/
  • How to encrypt all the CISCO router password?By default all the passwords of a CISCO router is readable in clear text in theconfiguration file. This is a great security threat if someone read it and configure orchange the router configuration. So, to protect form display the password, servicepassword-encryption command is used to encrypt the passwords. Servicepassword-encryption is a global command and encrypt the passwords: enable password console password vty password aux passwordBy following the above steps you can easily configure CISCO router passwords.More Cisco ROUTER INFO: http://blog.router-switch.com/http://www.router-switch.com/