To force users to use secure passwords on Ubuntu or Debian Linux, you can use the “pam_cracklib.so” module in PAM (Pluggable Authentication Modules). This module checks the strength of passwords before allowing them to be set.<\/p>\n
Here are the steps to enable password checks with PAM:<\/p>\n
# apt-get install libpam-cracklib<\/span>
\n<\/code><\/div>\n<\/div>\n\n- Edit the “\/etc\/pam.d\/common-password” file:<\/li>\n<\/ol>\n\n<\/div>\n
# <\/span>nano \/etc\/pam.d\/common-password<\/span>
\n<\/code><\/div>\n<\/div>\n\n- Add the following line to the top of the file:<\/li>\n<\/ol>\n\n<\/div>\n
password requisite pam_cracklib.so retry<\/span>=3<\/span> minlen=8<\/span> difok=3<\/span>
\n<\/code><\/div>\n<\/div>\n\n- Save and close the file.<\/li>\n<\/ol>\n
With these steps, passwords must now meet the following criteria:<\/p>\n
\n- Must be at least 8 characters long<\/li>\n
- Must have a minimum difference of 3 characters compared to the old password<\/li>\n
- Users will have to retry entering the password up to 3 times if the first attempts are not strong enough.<\/li>\n<\/ul>\n
It’s recommended to test the changes before rolling it out to a production environment.<\/p>\n
(https:\/\/www.blazeair.com\/<\/a>)<\/p>\n","protected":false},"excerpt":{"rendered":"