How To Check Password Strength In Linux With Cracklib

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Password security is important subject in IT. We call it password but actually it is a key to enter systems. Making authentication password-less by using key based authentication is more secure but it is not always possible. So for the password based authentication password strength is important.

How Can We Make Passwords Strong

Actually making passwords strong is easy. Important thing is making this as default behauivour. Just typing more 5 character will make our systems like a castle.

  • At leasts use 14 characters
  • Use easy to remember expression
  • Use . , ; ” ! more than 3 times

Install Cracklib

Ubuntu, Debian, Kali:

Fedora, CentOS:

Try New Passwords

Now we will try our passwords against cracklib to check their strength

 

 

 

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