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Linux Password Policy

Hi Expert,I am not very expert in Linux so please advise me.I have Oracle Linux 7.6 (Unbreakable) and wanted to configured Password Policy according to my organization therefore I have altered three files 1. Login.defs   2. Pwquality.conf 3....
Hi Expert,

I am not very expert in Linux so please advise me.

I have Oracle Linux 7.6 (Unbreakable) and wanted to configured Password Policy according to my organization therefore I have altered three files 1. Login.defs   2. Pwquality.conf 3. system-auth.

In Login.defs i have changed the value

PASS_MAX_DAYS   = 3
PASS_MIN_DAYS    = 1
PASS_MIN_LEN        = 9
PASS_WARN_AGE    1

Pwquality

minlen = 9
minclass = 2
minrepeat = 2

System-auth

added line after Password sufficient  remember=3

Problem :
1. when i...