Authentication and Account Password

IT has a centralized authentication system, that is, a unique identification system, which allows all its users to access the various informed services, using the same authentication credentials - the same username and password. 
 
 Given the degree of criticality of this keyword, which allows access to multiple computer services, were used according to the following rules: 
 
 - A keyword must have at least eight characters and three different variants (uppercase, lowercase, numbers and punctuation); 
 - The password must be renewed periodically by the user; 
 
 You can change your password at  https://password.co.it.pt