Re: [CentOS] Ad integration with centos 6

2011-12-29 Thread Trey Dockendorf
I wrote an article some time ago for CentOS 6 and have been using this
setup in production since.
http://itscblog.tamu.edu/joining-samba-to-a-windows-2008-r2-domain/

My servers that interact with AD allow both AD based file sharing and also
SSH access.  The most updated configs I use can be found here,
https://github.com/treydock/puppet-samba.  I just added recent changes
where I use AD groups to delegate access to the Linux server.  This works
with 2008 R2.

- Trey

On Fri, Dec 23, 2011 at 12:23 AM, dnk d.k.emailli...@gmail.com wrote:

 Can anyone point me to a tutorial on using Active Directory to authenticate
 a centos 6 server? I just want to use it to authenticate, ssh and restrict
 access to a particular ad group. I prefer to use the lightest method
 possible. I know you can use ldap, or winbind, etc. I have been trying to
 follow the ones I have been googling, but none of them seem quit complete.
 My issue is that I have no ldap experience.

 Dnk
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Re: [CentOS] Ad integration with centos 6

2011-12-28 Thread Alain Péan
Hi dnk,

Le 23/12/2011 07:23, dnk a écrit :
 Can anyone point me to a tutorial on using Active Directory to authenticate
 a centos 6 server? I just want to use it to authenticate, ssh and restrict
 access to a particular ad group. I prefer to use the lightest method
 possible. I know you can use ldap, or winbind, etc. I have been trying to
 follow the ones I have been googling, but none of them seem quit complete.
 My issue is that I have no ldap experience.

 Dnk


I am personnally using SSSD (System Security Service Deamon) to 
authenticate C6 (SL6) against AD. See this blog link that looks good :
http://www.ohjeah.net/2011/06/09/linux-ssh-pam-ldap-sssd-2008-r2-ad-deployment/

There is something more that I do before configuring Authentication, is 
to add the machine to AD with Samba (net join ads...).

In /etc/krb5.conf, I added the encryption types required by AD 2008 :
...
[libdefaults]
 ticket_lifetime = 24000
 default_realm = EXAMPLE.COM
 default_tgs_enctypes = arcfour-hmac-md5 des-cbc-crc des-cbc-md5 
des3-hmac-sha1
 default_tkt_enctypes = arcfour-hmac-md5 des-cbc-crc des-cbc-md5 
des3-hmac-sha1
 clockskew = 300


Hopes that helps...

Alain

-- 
==
Alain Péan - LPP/CNRS
Administrateur Système/Réseau
Laboratoire de Physique des Plasmas - UMR 7648
Observatoire de Saint-Maur
4, av de Neptune, Bat. A
94100 Saint-Maur des Fossés
Tel : 01-45-11-42-39 - Fax : 01-48-89-44-33
==

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Re: [CentOS] Ad integration with centos 6

2011-12-28 Thread dnk
Hi Alain,

I had tried that tutorial, and had issues with that one as well. I
obviously was missing something when I tried it.

I actually got my machine in AD using likewise open. It works quite well,
with minimal config.

I appreciate the pointers though!

D



On Wednesday, December 28, 2011, Alain Péan alain.p...@lpp.polytechnique.fr
wrote:
 Hi dnk,

 Le 23/12/2011 07:23, dnk a écrit :
 Can anyone point me to a tutorial on using Active Directory to
authenticate
 a centos 6 server? I just want to use it to authenticate, ssh and
restrict
 access to a particular ad group. I prefer to use the lightest method
 possible. I know you can use ldap, or winbind, etc. I have been trying to
 follow the ones I have been googling, but none of them seem quit
complete.
 My issue is that I have no ldap experience.

 Dnk


 I am personnally using SSSD (System Security Service Deamon) to
 authenticate C6 (SL6) against AD. See this blog link that looks good :

http://www.ohjeah.net/2011/06/09/linux-ssh-pam-ldap-sssd-2008-r2-ad-deployment/

 There is something more that I do before configuring Authentication, is
 to add the machine to AD with Samba (net join ads...).

 In /etc/krb5.conf, I added the encryption types required by AD 2008 :
 ...
 [libdefaults]
 ticket_lifetime = 24000
 default_realm = EXAMPLE.COM
 default_tgs_enctypes = arcfour-hmac-md5 des-cbc-crc des-cbc-md5
 des3-hmac-sha1
 default_tkt_enctypes = arcfour-hmac-md5 des-cbc-crc des-cbc-md5
 des3-hmac-sha1
 clockskew = 300
 

 Hopes that helps...

 Alain

 --
 ==
 Alain Péan - LPP/CNRS
 Administrateur Système/Réseau
 Laboratoire de Physique des Plasmas - UMR 7648
 Observatoire de Saint-Maur
 4, av de Neptune, Bat. A
 94100 Saint-Maur des Fossés
 Tel : 01-45-11-42-39 - Fax : 01-48-89-44-33
 ==

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Re: [CentOS] Ad integration with centos 6

2011-12-28 Thread James A. Peltier
- Original Message -
| Hi Alain,
| 
| I had tried that tutorial, and had issues with that one as well. I
| obviously was missing something when I tried it.
| 
| I actually got my machine in AD using likewise open. It works quite
| well,
| with minimal config.
| 
| I appreciate the pointers though!
| 
| D

Now try diagnosing the problem when you have no idea what LWO did or continues 
to do to make things work.  We had a great deal of problems with LWO.  It was a 
cinch to set up but debugging it quickly became tedious because troubleshooting 
a system we didn't understand how all the pieces fit together was met with, 
well, pain.  Quite often it was easier to just re-install the node then try to 
troubleshoot why something wasn't working.  At least, that's my experience.

-- 
James A. Peltier
Manager, IT Services - Research Computing Group
Simon Fraser University - Burnaby Campus
Phone   : 778-782-6573
Fax : 778-782-3045
E-Mail  : jpelt...@sfu.ca
Website : http://www.sfu.ca/itservices
  http://blogs.sfu.ca/people/jpeltier
I will do the best I can with the talent I have

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Re: [CentOS] Ad integration with centos 6

2011-12-28 Thread dnk
On Wednesday, December 28, 2011, James A. Peltier jpelt...@sfu.ca wrote:
 - Original Message -
 | Hi Alain,
 |
 | I had tried that tutorial, and had issues with that one as well. I
 | obviously was missing something when I tried it.
 |
 | I actually got my machine in AD using likewise open. It works quite
 | well,
 | with minimal config.
 |
 | I appreciate the pointers though!
 |
 | D

 Now try diagnosing the problem when you have no idea what LWO did or
continues to do to make things work.  We had a great deal of problems with
LWO.  It was a cinch to set up but debugging it quickly became tedious
because troubleshooting a system we didn't understand how all the pieces
fit together was met with, well, pain.  Quite often it was easier to just
re-install the node then try to troubleshoot why something wasn't working.
 At least, that's my experience.

 --
 James A. Peltier
 Manager, IT Services - Research Computing Group
 Simon Fraser University - Burnaby Campus
 Phone   : 778-782-6573
 Fax : 778-782-3045
 E-Mail  : jpelt...@sfu.ca
 Website : http://www.sfu.ca/itservices
  http://blogs.sfu.ca/people/jpeltier
 I will do the best I can with the talent I have

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Those are very valid points. I just was able to get this setup, where as I
couldn't get the others.

D
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[CentOS] Ad integration with centos 6

2011-12-22 Thread dnk
Can anyone point me to a tutorial on using Active Directory to authenticate
a centos 6 server? I just want to use it to authenticate, ssh and restrict
access to a particular ad group. I prefer to use the lightest method
possible. I know you can use ldap, or winbind, etc. I have been trying to
follow the ones I have been googling, but none of them seem quit complete.
My issue is that I have no ldap experience.

Dnk
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