Password implementing the “mechanism” to enforce this policy.

The following security policy has just been adopted by your company and you as the network administrator are responsible for implementing the “mechanism” to enforce this policy.
Policy Statement: Passwords are the most frequently utilized form of authentication for accessing a computing resource. Due to the widespread use of weak passwords, the proliferation of automated password-cracking programs, and the activity of malicious attackers, they are very often also the weakest link in securing data. Password use must therefore adhere to the following policy statement:
All passwords must be strong passwords and follow the standards below.
Be at least ten characters in length
Contain at least one lowercase character
Contain at least one number
Contain at least one special character
Contain at least one uppercase character
Cannot contain your first name, last name, or username
Cannot match your last three passwords.
Must be changed every 90 days
 To maximize your learning with this written assignment, it is recommended that you research how passwords standards can be enforced (your choice of the target OS) and that you attempt to implement this policy on a non-production system – preferably one that you have implemented for use in this course. 
 In a two page (maximum) paper, delineate the process you would adopt, specific to your chosen OS platform, to enable enforcement of the password policy.  Include screen shots of scripts and/ or application settings that you utilized to accomplish this assignment.