About Password Complexity settings in linux, and about linux passwords

About Password Complexity settings in linux, and about linux passwords

How to Set Password Complexity in linux:

(1) modify the/etc/login. defs File

PASS_MAX_DAYS90# Maximum Password Expiration days

PASS_MIN_DAYS80# Minimum Password Expiration days

PASS_MIN_LEN10# Minimum Password Length

PASS_WARN_AGE7# Password Expiration Warning days

(2) modify the/etc/pam. d/system-auth file

Replace the following line with password requisite pam_cracklib.so:

PasswordRequisitePam_cracklib.so retry = 5Difok = 3 minlen = 10 ucredit =-1 lcredit =-3 dcredit =-3 dictpath =/usr/share/cracklib/pw_dict

Parameter description:

Number of attempts: 5Minimum character: 3 Minimum Password Length: 10Minimum capital letters: 1 minimum lowercase letters: 3 minimum numbers: 3 password dictionary:/usr/share/cracklib/pw_dict

Note: After modification, you may immediately test:

UseraddTest

Passwd test

It doesn't work, huh, huh. This is because you are running as root. After exiting the root identity, use test to log on and change the password.

Does it take effect? It should work.