Securing Console Access Using a Console PasswordĪ Cisco router's console port is the most important port on the device.Password recovery on the router can only be done using the console port.
#Crack port forward network utilities 3.5 password
Figure 3.2 Displaying the enable secret password command output in a show running-config command. Always usethe enable secret command instead of the older enable passwordcommand enable password uses a very week encryption algorithm. You canget information on password recovery by doing a search on the keywords"password recovery" on. If you forget your enable secret password, the only way to accessthe router's privilege EXEC mode would be by doing a password recovery.Different Cisco routers have different ways of doing password recovery. Here is an example to illustrate this concept: Router# show running-config! Last configuration change at 14:34:43 MST Wed Jul 16 2003! NVRAM config last updated at 14:34:44 MST Wed Jul 16 2003!!version 12.3service timestamps debug uptimeservice timestamps log uptimeservice password-encryption!hostname Router!enable secret 5 $1$oeJp$08vrQkQWGgsz5S5h.VqQe/!įigure 3.2 shows how the enable secret password appears in a show running-config command. If you do a show running-config on the router, you will note thatthe enable secret is encrypted and the 5 after enablesecret identifies that it is an MD5 hash. The password assigned to the privilege EXEC mode will be Password ciscorocks because all spaces after the first character are part of thepassword. In this example, what is the password assigned to the privilege EXECmode? Let us look at another example: Router> enableRouter# configure terminalRouter(config)# enable secret Password cisco rocksRouter(config)# In the example, Passwordciscorocks is the password that will be usedto access the privilege EXEC mode of this router. Figure 3.1 Configuring the enable secret password on a router.
#Crack port forward network utilities 3.5 how to
In other words, once you have a password using MD5, you cannot unhashit: Router> enableRouter# configure terminalRouter(config)# enable secret PasswordciscorocksRouter(config)#įigure 3.1 shows how to configure an MD5 password on a router. The enable secret command encrypts the password to the privilegeEXEC mode using the Message Digest 5 (MD5) hashing algorithm. Once you are in privilege EXEC mode, you can then secure privilege EXEC modeon the routers using the enable secret command in global configurationmode. You can use the enable command to access the privilege EXEC mode of arouter: Router> enableRouter# By default, you do not need a password to access privilegeEXEC mode. To make changes to the router configuration, you have to first enterprivilege EXEC mode. You canuse Ctrl+Z to break out of the Initial Configuration dialog box. The Initial Configuration dialog box is a menusystem that assists you in applying basic configuration on the router. When you first power on the router, assuming that there is no priorconfiguration stored in the nonvolatile RAM (NVRAM), the router enters theInitial Configuration dialog box. Securing Privilege EXEC Mode Using the enable secret Command Do notuse obvious passwords such as your dog's name or your date ofbirth. Be creative and generate unique passwords every time. Passwords must be changed often, and using the same passwords over againshould be avoided. spaces after thefirst character are not ignored. Leading spaces in the password are ignored however. On Cisco equipment, the first character in the password cannot be anumber. The passwords should containalphanumeric, uppercase, and lowercase characters. Blankpasswords are not a part of a good security policy. You should keep the following rules in mind when formulating a passwordpolicy:Īcceptable password length must be between 1 and 25 characters. You can storepasswords locally on the router or use Remote Authentication Dial-In UserService (RADIUS) or Terminal Access Controller Access Control System + (TACACS+)for remote AAA using CSACS. You can store passwords locally on the router or usesome kind of remote administration using a CiscoSecure Access Control Serverauthentication, authorization, and accounting (AAA) server. To protect administrative access to the routers, you must protect the consoleport via a password policy. You can access all Cisco routers in various ways: Learn More Buy Securing Administrative Access to a Cisco RouterĬonfiguring administrative access on the Cisco router is an important steptoward network security.
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