Re: RHEL6 pam_tally2 lockouts

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Have you tried putting the entries in /etc/pam.d/ssh instead of system-auth?


Paul W.


On Jan 10, 2011, at 10:40, Johan Booysen <johan@xxxxxxxxxxxxxxxxxxxxx> wrote:

> I'm trying to set up a RHEL6 server for sftp access only.  So far it
> works very well, but I can't seem to get pam_tally2 set up to lock user
> accounts after so many unsuccessful login attempts.
> 
> 
> 
> As far as I could find out, it should work if I add the following lines
> to /etc/pam.d/system-auth:
> 
> 
> 
> Last line in the auth section:
> 
> auth        required      pam_tally2.so deny=3 onerr=fail
> 
> 
> 
> Last line in the account section:
> 
> account     required      pam_tally2.so
> 
> 
> 
> According to the pam_tally2 man page this should log failed attempts in
> /var/log/tallylog, but when I deliberately log in with nonsense
> usernames/password, I get absolutely nothing in the tallylog file.
> Hence running the pam_tally2 command with no options produces no
> results.
> 
> 
> 
> /var/log/secure shows me entries such as:
> 
> 
> 
> Jan 10 15:16:26 rhel6 sshd[1918]: Failed password for test from
> 192.x.x.x port 4467 ssh2
> 
> Jan 10 15:16:29 rhel6 sshd[1918]: Failed password for test from 192.x.x.
> port 4467 ssh2
> 
> Jan 10 15:16:29 rhel6 sshd[1919]: Disconnecting: Too many authentication
> failures for test
> 
> Jan 10 15:16:29 rhel6 sshd[1918]: PAM 1 more authentication failure;
> logname= uid=0 euid=0 tty=ssh ruser= rhost=mc23.xxxxx.int  user=test
> 
> 
> 
> In /etc/ssh/sshd_config I've got
> 
> 
> 
> UsePAM yes
> 
> PasswordAuthentication yes
> 
> ChallengeResponseAuthentication no
> 
> 
> 
> I might be missing something silly here, so I'd really appreciate any
> advice on getting this to work on Red Hat Enterprise Linux 6.
> 
> 
> 
> Thanks.
> 
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