pam_tally2 and tallylog

[Phil Beckley]

Thanks for your response, Thorsten. Can you explain the rationale behind
why tallylog is a binary file?
On Jan 24, 2016 1:18 PM, "Thorsten Kukuk" <kukuk at suse.de> wrote:

> 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 at mac.com> 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 at mac.com
> > > cell: 410.493.9448
> > >
> > > Sent from my iPhone
> > >
> > > > On Jan 23, 2016, at 16:18, Phil Beckley <phil.beckley at gmail.com>
> 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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>
> --
> 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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