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Saturday, 21 June 2014

pam_tally2 - The login counter (tallying) module

I have set up PAM Authentication to lock a user accoount after 3 attempts of incorrect password.

PAM Module: pam_tally2.so

password-auth-ac:
=============

auth        required      pam_tally2.so deny=3 file=/var/log/tallylog

account     required      pam_tally2.so

[root@node1 /]# pam_tally2 --user test
Login           Failures Latest failure     From
test                0
[root@node1 /]# 

login as: test
test@192.168.183.148's password:
Access denied
test@192.168.183.148's password:
Access denied
test@192.168.183.148's password:
Access denied
test@192.168.183.148's password:
Access denied
test@192.168.183.148's password:
Account locked due to 4 failed logins
Account locked due to 5 failed logins
Account locked due to 6 failed logins
Account locked due to 7 failed logins
Last login: Sun Jun 15 00:14:30 2014 from 192.168.183.1
[test@node1 ~]$


[root@node1 /]# pam_tally2 --user=test
Login           Failures Latest failure     From
test                6    06/15/14 00:23:20  192.168.183.1
[root@node1 /]# pam_tally2 --user=test --reset
Login           Failures Latest failure     From
test                6    06/15/14 00:23:20  192.168.183.1
[root@node1 /]# pam_tally2 --user=test
Login           Failures Latest failure     From
test                0
[root@node1 /]#

login as: test
test@192.168.183.148's password:
Last login: Sun Jun 15 00:20:07 2014 from 192.168.183.1
[test@node1 ~]$ whoami
test
[test@node1 ~]$


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