[tac_plus] Re: PAM authentication
john heasley
heas at shrubbery.net
Wed Jun 27 16:01:48 UTC 2007
Please enable the debugging on the tacacs daemon. tac_plus -d 16 -d 8
Wed, Jun 27, 2007 at 09:01:10PM +0530, Chetan_Jain at Monitor.com:
> I have tested it on the localhost where tacacs+ server is running.....
>
> ./tacacsplustest -user chetan -pass 123456 -key cooler
> sending Authentication request...
> Bad status in authentication response: 2, ''
> sending Authorization request...
> Received incorrect response type:
>
> I am not sure what's wrong with the Server config or compilation.... btw i
> am running FC5 on both server and network client
>
>
> Thanks and Regards,
> Chetan Jain
> Network Team - IR,
> Monitor Group,
> 131 Free Press House,
> Nariman Point, Mumbai.
> India
>
>
>
> Chetan_Jain at monitor.com
> Sent by: tac_plus-bounces at shrubbery.net
> 06/27/2007 01:45 PM
>
> To
> tac_plus at shrubbery.net
> cc
>
> Subject
> [tac_plus] Re: PAM authentication
>
>
>
>
>
>
> Logs on the Tacacs+ Server :
>
> Jun 27 03:40:43 netmgr tac_plus[22460]: Version F4.0.4.10 Initialized 1
> Jun 27 03:50:21 netmgr tac_plus[22462]: session.peerip is 10.115.111.215
> Jun 27 03:50:21 netmgr tac_plus[23406]: connect from 10.115.111.215
> [10.115.111.215]
> Jun 27 03:50:22 netmgr tac_plus[23406]: pap-login query for 'chetan' ssh
> from 10.115.111.215 rejected
>
> /var/log/secure on the Network Client :
>
> Jun 27 13:18:53 cjain-test sshd[27081]: Deprecated pam_stack module called
>
> from service "sshd"
> Jun 27 13:18:53 cjain-test sshd[27081]: pam_sm_authenticate: called
> (pam_tacplus v1.2.9)
> Jun 27 13:18:53 cjain-test sshd[27081]: pam_sm_authenticate: user [chetan]
>
> obtained
> Jun 27 13:18:53 cjain-test sshd[27081]: tacacs_get_password: called
> Jun 27 13:18:53 cjain-test sshd[27081]: tacacs_get_password: obtained
> password [H M?INCORRECT]
> Jun 27 13:18:53 cjain-test sshd[27081]: pam_sm_authenticate: pass [H
> M?INCORRECT] obtained
> Jun 27 13:18:53 cjain-test sshd[27081]: pam_sm_authenticate: tty [ssh]
> obtained
> Jun 27 13:18:53 cjain-test sshd[27081]: pam_sm_authenticate: trying srv 0
> Jun 27 13:18:53 cjain-test sshd[27081]: tac_authen_pap_read:
> authentication failed, server reply was 2 (Login incorrect)
> Jun 27 13:18:53 cjain-test sshd[27081]: Failed password for invalid user
> chetan from 10.115.100.100 port 3610 ssh2
>
> I am not sure why its showing some password which was not typed.... I
> think its the issue with the pam_tacacs installed on the network client...
>
> Can somebody suggest me what could be the issue......
>
>
> Thanks and Regards,
> Chetan Jain
> Network Team - IR,
> Monitor Group,
> 131 Free Press House,
> Nariman Point, Mumbai.
> India
>
>
>
> john heasley <heas at shrubbery.net>
> 06/26/2007 10:42 PM
>
> To
> Chetan_Jain at Monitor.com
> cc
> tac_plus at shrubbery.net
> Subject
> Re: [tac_plus] PAM authentication
>
>
>
>
>
>
> Tue, Jun 26, 2007 at 09:28:16PM +0530, Chetan_Jain at Monitor.com:
> > Hi,
> >
> > I am trying to authenticate sshd service on a linux system through
> > tacacs+....
> >
> > Tacacs+ server IP : 10.1.100.114
> > Network Client : 10.115.111.215
> >
> > I am starting tacacs+ using tac_plus -d 8 -C
> > /opt/WiKID/private/tacacs.conf
> >
> > # This file is dynamically written by the WiKID server
> > # manual changes to this file will be overwritten almost immediately
> >
> > key = "cooler"
> > accounting file = /opt/WiKID/log/tacacs.accounting.log
> >
> > user = chetan {
> > default service = permit
> > chap = cleartext "605992"
> > pap = cleartext "605992"
> > arap = cleartext "605992"
> > login = des chRQBOhi.agrM
> > }
> >
> > On the Network Client side....
> >
> > /etc/pam.d/tacacs :
> >
> > #%PAM-1.0
> > auth sufficient /lib/security/pam_tacplus.so debug \
> > server=10.1.100.114 secret=cooler encrypt
> > account sufficient /lib/security/pam_tacplus.so debug \
> > server=10.1.100.114 secret=cooler encrypt service=shell protocol=ssh
> > session sufficient /lib/security/pam_tacplus.so debug \
> > server=10.1.100.114 secret=cooler encrypt service=shell protocol=ssh
> >
> > /etc/pam.d/sshd :
> >
> > #%PAM-1.0
> > auth sufficient pam_stack.so service=tacacs
> > #auth required pam_stack.so service=system-auth
> > auth required pam_nologin.so
> > account sufficient pam_stack.so service=tacacs
> > account required pam_stack.so service=system-auth
> > password required pam_stack.so service=system-auth
> > session sufficient pam_stack.so service=tacacs
> > session required pam_stack.so service=system-auth
> > session required pam_limits.so
> > session optional pam_console.so
> >
> >
> > Tacacs+ is not authenticating the credentials....
> >
> > /var/log/messages on Tacacs+ Server shows :
> >
> > Jun 26 11:48:15 netmgr tac_plus[28248]: Version F4.0.4.10 Initialized 1
> > Jun 26 11:48:30 netmgr tac_plus[28258]: connect from 10.115.111.215
> > [10.115.111.215]
> > Jun 26 11:48:30 netmgr tac_plus[28258]: pap-login query for 'chetan' ssh
>
>
> > from 10.115.111.215 rejected
> >
> >
> > Can you help me what could be the issue......
>
> start with enabling authentication debugging on the tacacs daemon. it
> should
> tell you why the login failed.
>
>
>
>
>
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