"Linux Security" Security Password policy setting

Command:

Vim/etc/login.defs

Default settings:

# Password Aging controls:##    Pass_max_days Maximum Number of days    a password is used.# pass_min_days Minimum number of days    allowed bet Ween password changes.#    pass_min_len    Minimum acceptable password length.#    pass_warn_age    number of Days warning given before a password expires. #PASS_MAX_DAYS    99999pass_min_days     0 Pass_min_len     5 pass_warn_age     7

Analytical:

Pass_max_days---Password valid days, maximum how long to change the password.
Pass_min_days 1--As soon as the password changes, the password can be changed again.
Pass_min_len 8--The minimum set length of the password.
Pass_warn_age 7--a few days before the password expires, a warning message is issued.

"Linux Security" Security Password policy setting