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CISCO IOS COMMANDS LIST PASSWORD
The configuration will be demonstrated in the next example but first we will delete the username and password created earlier: GeekRtr(config)#no username adminĪnd with this configuration we will re-create username using a secret: GeekRtr(config)#username admin secret letmein123 To use type 5 encryption to secure passwords in Cisco IOS devices we can simply create username followed by a secret instead of password.
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It’s far stronger than encryption type 7 and the only way to reveal the original password is by using brute force (and of course it would take a lot of time and resources just to do that - depends on the original passphrase length). MD5 algorithm is a complex one-way operation and it’s nearly impossible to reverse the process. It using MD5 algorithm to hide your original passphrase. Instead of type 7, it is highly advised to use encryption type 5. However, this encryption is no longer secure in today’s network as it can be easily reversed to reveal the original passphrase. Also notice that the number “0” before the passphrase has been changed to “7”, indicating it has been encrypted using type 7 hash. Username admin password 7 10420C0D08121B055D5679Īs you can see above, password phrase in the show running-config output has been masked by a random numbers and letters. GeekRtr(config)#do show running-config | include username GeekRtr(config)#service password-encryption With the command service password-encryption, all existing and future added passwords will be automatically encrypted. There are two types of encryption: Encryption type 7 To solve this issue, we can apply encryption to the password and hide the exact passphrase. It’s never a good idea to leave your password in a readable condition like this. Also notice the number “0” before the passphrase indicates it is unencrypted. Notice that your password phrase is explicitly written there. In the show running-config output, the password will be shown as it is: GeekRtr#show running-config | include username When you define a password, it is stored with clear-text format in your running-configuration. Securing your Cisco IOS password with encryption However, there is one major weakness in this configuration and it will be explained in this sub-section below. With above configuration you have successfully created username Cisco IOS device. GeekRtr(config)#username admin password letmein123 The standard command to create user account and password in Cisco IOS is shown in the example below, and it must be executed in global configuration mode.
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In this article, we will go deep on creating users accounts and all its features including privilege, encryption, and automation that we can implement in Cisco IOS devices. Different privilege means different available commands that can be executed per user account. With several different user accounts, you can also set different privilege level for each one of them.
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Managing user Accounts and passwords in Cisco IOS Devices is very important task.