Re: pam_tally2 and tallylog

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On Sun, Jan 24, Phil Beckley wrote:

> Maybe a little background would help here. I'm working on a log watcher (of
> sorts) for failed SSH logins, only, I'm looking at registered users
> exclusively. Auth.log seems too cumbersome to watch and extract out
> registered users if a distributed attack occurs. So, I wanted to use
> tallylog to see how many failed attempts have occurred for registered users
> and use a script from there to take action. What do you think?

pam_tally2 does not write a log file, this is more or less a database.
If pam_tally2 takes any actions, it logs it via syslog, too. But writing
the database as ascii doesn't make any sense and does not help you.
Either you let pam_tally2 lock the account if too many failed logins
appear, or pam_tally2 is the wrong module for you.

Thorsten

> On Jan 23, 2016 6:22 PM, "Paul Whitney" <paul.whitney@xxxxxxx> wrote:
> 
> > Re #1. Maybe what you are looking for is to parse output of command
> > 'lastb'.
> >
> > Re #2. There is lots of Google references to PAM.
> >
> > Paul Whitney
> > email: paul.whitney@xxxxxxx
> > cell: 410.493.9448
> >
> > Sent from my iPhone
> >
> > > On Jan 23, 2016, at 16:18, Phil Beckley <phil.beckley@xxxxxxxxx> wrote:
> > >
> > > Hi all,
> > >
> > > I've been looking for documentation and in forums, but I'm not having
> > any luck getting more information on the items in the subject. I have a
> > couple of questions and please let me know if this isn't the right place to
> > address these questions.
> > >
> > > 1. Why is tallylog a binary file? I would love to parse it like a log,
> > but that seems like a difficult task.
> > > 2. Is there a more in-depth description/explanation of how to modify the
> > pam conf files? I was looking at the PAM SA guide, but was unable to make
> > sense of a lot of it as I don't have a background in PAM, as a whole.
> > >
> > > Thanks for your help.
> > >
> > >
> > > P
> > > _______________________________________________
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> > > Pam-list@xxxxxxxxxx
> > > https://www.redhat.com/mailman/listinfo/pam-list
> >
> > _______________________________________________
> > Pam-list mailing list
> > Pam-list@xxxxxxxxxx
> > https://www.redhat.com/mailman/listinfo/pam-list
> >

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-- 
Thorsten Kukuk, Senior Architect SLES & Common Code Base
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nuernberg, Germany
GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)

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