heiho.net/software/pam_shield

pam_shield

pam_shield is a PAM module that uses null-routing or iptables to lock out script kiddies that probe your computer for open logins and/or easy guessable passwords. pam_shield is meant as an aid to protect public computers on the open internet.

pam_shield COMES WITH NO WARRANTY.
pam_shield is free software.
pam_shield is distributed under terms described in the GNU General Public License.

Everybody knows it is unwise to leave computers largely unprotected connected to the internet. However, there are cases in which this is still common practice. For exampe, academic sites with hundreds of users often have a policy of allowing logins from all over the world. They are under constant attack by crackers who are trying to break into the system by password guessing. pam_shield aims to detect and block these crackers.

pam_shield was developed by Walter de Jong from 2007 to 2011.
The author cannot be held responsible for any consequences or harm caused by this software.

The latest version is 0.9.5 (January 2011)
Download the package pam_shield-0.9.5.tar.gz (27 KB)

Please see the README for more information.
Please see the INSTALL for even more information.
Please see the Changelog for more info on the changes that were made between releases.

The main distribution site is at http://www.heiho.net/pam_shield/.

The source code is also available through github.

If you really must, you can contact the author at walter at heiho dot net