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Old 09-22-2009, 05:57 PM   #1
Registered: Nov 2003
Posts: 809

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Using John the Ripper

Hi there --

I completed the installation of John the Ripper on one of our systems of which I am responsible. The purpose of the exercise, seriously, is to run checks on the user passwords, and check for their relative weakness.

I am planning on doing a run of the application, and so far what I have for the command syntax is the following:

john --wordlist=all.lst --rules --shells=tcsh,bash mypasswd > $HOME/john_results.txt
I have also changed the IDLE option in the configuration file to Y in order for the program to take up less CPU time.

Besides the steps that I have outlined above, is there anything else I should consider in doing before running the application? Thanks.
Old 09-23-2009, 05:44 AM   #2
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Registered: Aug 2004
Location: England
Distribution: Ubuntu
Posts: 1,039

Rep: Reputation: 98
It's been a while since I last ran "john" but your syntax looks fine to me.

Hopefully you won't find too many users with weak passwords.

Good luck.


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