I am running a number of RHEL ES 4.5 systems, fully updated. The problem I am having is baffling me. I am using pam_tally so that three consecutive unsuccessful logins will lock out the user, until an hourly cron script unlocks the account. It has worked fine for a number of years. The problem is this: If I log in as user bjt, and I SUCCESSFULLY su - to user bdna_user, the faillog records this as a failed login attempt, even though nothing untoward appears in the logs, that I can find. In essence, I can log in as bjt, su - to bdna_user three times, and cause bdna_user's account to be locked out, so that if bdna_user attempts to log in, their access will be denied. Below is the logs where I do just that. Mar 18 09:40:35 doggett sshd(pam_unix)[14176]: session opened for user bjt by (uid=0) Mar 18 09:40:49 doggett su(pam_unix)[14201]: session opened for user bdna_user by bjt(uid=500) Mar 18 09:41:27 doggett su(pam_unix)[14201]: session closed for user bdna_user Mar 18 09:41:36 doggett su(pam_unix)[14226]: session opened for user bdna_user by bjt(uid=500) Mar 18 09:41:38 doggett su(pam_unix)[14226]: session closed for user bdna_user Mar 18 09:41:44 doggett su(pam_unix)[14250]: session opened for user bdna_user by bjt(uid=500) Mar 18 09:41:48 doggett su(pam_unix)[14250]: session closed for user bdna_user Mar 18 09:42:03 doggett sshd(pam_unix)[14176]: session closed for user bjt Mar 18 09:42:07 doggett sshd(pam_unix)[14150]: session closed for user bdna_user Mar 18 09:42:23 doggett pam_tally[14278]: user bdna_user (1029) tally 4, deny 3 [root@doggett ~]# pam_tally User bdna_user (1029) has 4 [root@doggett ~]# This is what is in /etc/pam.d/system-auth: auth required /lib/security/$ISA/pam_tally.so onerr=succeed no_magic_root account required /lib/security/$ISA/pam_tally.so deny=3 no_magic_root reset NOTE: I have systems where "onerr=fail" is set, and it makes no difference. My question is, why is it doing this? -- Bill Tangren U.S. Naval Observatory Si hoc legere scis nimium eruditionis habes -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
