I would like to list the username of the users which do not have a strong password in a LAN. How can I do it?

I do not want to force the password of the users, I want to force the users that have no password or not strong one to change it and use a stronger one.

closed as unclear what you're asking by Rui F Ribeiro, countermode, HalosGhost, techraf, don_crissti Oct 25 '16 at 22:50

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  • I do not wan to force the password of the user. – aurelien Oct 25 '16 at 20:18
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    Also do look into "Intel vs Randal Schwartz" before getting too deep into password crackers. – thrig Oct 25 '16 at 20:30
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    "In a LAN" isn't very specific, but in general passwords are hashed, there's no way to determine if they're "strong" or not without cracking them – Michael Mrozek Oct 25 '16 at 21:13
  • Ok, Thank you @MichaelMrozek for your lights – aurelien Oct 26 '16 at 18:23

Assuming you have access to the password database, something like John the Ripper could help you. Though it'd be easier to force a sufficient amount of "strongness" when the users set their passwords.


You'll want to talk to John.


Can be used in conjunction with hydra.

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