CentOS - Jun 2008 - using windows ad accounts for centos 5

Hi I read and used the article
http://blog.wazollc.com/Lists/Posts/Post.aspx?ID=2 to authenticate my ad
accounts when logging on to cent 5...however, once I edit the
nsswitch.conf file, I can't even log on as root or any local users
anymore. Kinit seems to initialize fine doing a kinit
username at MYDOMAIN.COM , however doing a getent passwd adusername ....it
just sits there in the shell and does nothing. I actually had to put all
files back to where they were before the change to even be able to login
locally or use sudo.

 

I followed the steps line by line on this article but get stuck
everytime....anyone has an idea or a better documented way of achieving
what I am trying to do , please let me know.

 

Thanks,

Isaac

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Isaac Gonzalez wrote:
> Hi I read and used the article 
> http://blog.wazollc.com/Lists/Posts/Post.aspx?ID=2 to authenticate my ad 
> accounts when logging on to cent 5?however, once I edit the 
> nsswitch.conf file, I can?t even log on as root or any local users 
> anymore. Kinit seems to initialize fine doing a kinit 
> username at MYDOMAIN.COM <mailto:username at MYDOMAIN.COM> , however
doing a
> getent passwd adusername ?.it just sits there in the shell and does 
> nothing. I actually had to put all files back to where they were before 
> the change to even be able to login locally or use sudo.
> 
> I followed the steps line by line on this article but get stuck 
> everytime?.anyone has an idea or a better documented way of achieving 
> what I am trying to do , please let me know.
> 
> Thanks,
> Isaac
> 
I'm using AD-via-Kerberos to authenticate users on several CentOS 5.1 
systems.  Setting it up was as easy as a single command line:

authconfig \
         --usemd5 --useshadow --enablelocauthorize \
         --enablekrb5 \
         --krb5realm={AD Domain Name} \
         --enablekrb5kdcdns --enablekrb5realmdns --update

This makes the necessary changes to /etc/krb5.conf, /etc/ and 
/etc/nsswitch.conf.  I am NOT using this for user information, just 
password authentication, so I add user accounts for each authorized user.

You can also consider using the --disablesysnetauth flag, which disables 
authenticating "system" accounts via the network services and forces 
them to use local authorization.  This should prevent entries in the AD 
for "root" and other system accounts from being used.

Hope that helps!
-- 
Jay Leafey - Memphis, TN
jay.leafey at mindless.com
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That was exactly what I was looking for, thanks for taking the time to
reply.....i'll reply back with my results.

-Isaac

-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
Behalf Of Jay Leafey
Sent: Thursday, June 05, 2008 4:35 PM
To: CentOS mailing list
Subject: [SPAM]Re: [CentOS] using windows ad accounts for centos 5

Isaac Gonzalez wrote:
> Hi I read and used the article
> http://blog.wazollc.com/Lists/Posts/Post.aspx?ID=2 to authenticate my 
> ad accounts when logging on to cent 5?however, once I edit the 
> nsswitch.conf file, I can?t even log on as root or any local users 
> anymore. Kinit seems to initialize fine doing a kinit 
> username at MYDOMAIN.COM <mailto:username at MYDOMAIN.COM> , however
doing a
> getent passwd adusername ?.it just sits there in the shell and does 
> nothing. I actually had to put all files back to where they were 
> before the change to even be able to login locally or use sudo.
> 
> I followed the steps line by line on this article but get stuck 
> everytime?.anyone has an idea or a better documented way of achieving 
> what I am trying to do , please let me know.
> 
> Thanks,
> Isaac
> 
I'm using AD-via-Kerberos to authenticate users on several CentOS 5.1
systems.  Setting it up was as easy as a single command line:

authconfig \
         --usemd5 --useshadow --enablelocauthorize \
         --enablekrb5 \
         --krb5realm={AD Domain Name} \
         --enablekrb5kdcdns --enablekrb5realmdns --update

This makes the necessary changes to /etc/krb5.conf, /etc/ and
/etc/nsswitch.conf.  I am NOT using this for user information, just password
authentication, so I add user accounts for each authorized user.

You can also consider using the --disablesysnetauth flag, which disables
authenticating "system" accounts via the network services and forces
them to use local authorization.  This should prevent entries in the AD for
"root" and other system accounts from being used.

Hope that helps!
--
Jay Leafey - Memphis, TN
jay.leafey at mindless.com

Hmmm... I get 

authconfig: Authentication module /lib/security/pam_krb5.so is missing.
Authentication process will not work correctly.

When running this command...i tried to use yum whatprovides pam_krb5.so ...to no
avail.

Any suggestions

-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
Behalf Of Jay Leafey
Sent: Thursday, June 05, 2008 4:35 PM
To: CentOS mailing list
Subject: Re: [CentOS] using windows ad accounts for centos 5

Isaac Gonzalez wrote:
> Hi I read and used the article
> http://blog.wazollc.com/Lists/Posts/Post.aspx?ID=2 to authenticate my 
> ad accounts when logging on to cent 5?however, once I edit the 
> nsswitch.conf file, I can?t even log on as root or any local users 
> anymore. Kinit seems to initialize fine doing a kinit 
> username at MYDOMAIN.COM <mailto:username at MYDOMAIN.COM> , however
doing a
> getent passwd adusername ?.it just sits there in the shell and does 
> nothing. I actually had to put all files back to where they were 
> before the change to even be able to login locally or use sudo.
> 
> I followed the steps line by line on this article but get stuck 
> everytime?.anyone has an idea or a better documented way of achieving 
> what I am trying to do , please let me know.
> 
> Thanks,
> Isaac
> 
I'm using AD-via-Kerberos to authenticate users on several CentOS 5.1
systems.  Setting it up was as easy as a single command line:

authconfig \
         --usemd5 --useshadow --enablelocauthorize \
         --enablekrb5 \
         --krb5realm={AD Domain Name} \
         --enablekrb5kdcdns --enablekrb5realmdns --update

This makes the necessary changes to /etc/krb5.conf, /etc/ and
/etc/nsswitch.conf.  I am NOT using this for user information, just password
authentication, so I add user accounts for each authorized user.

You can also consider using the --disablesysnetauth flag, which disables
authenticating "system" accounts via the network services and forces
them to use local authorization.  This should prevent entries in the AD for
"root" and other system accounts from being used.

Hope that helps!
--
Jay Leafey - Memphis, TN
jay.leafey at mindless.com

-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
Behalf Of Jay Leafey
Sent: Thursday, June 05, 2008 4:35 PM
To: CentOS mailing list
Subject: [SPAM]Re: [CentOS] using windows ad accounts for centos 5

Isaac Gonzalez wrote:
> Hi I read and used the article
> http://blog.wazollc.com/Lists/Posts/Post.aspx?ID=2 to authenticate my 
> ad accounts when logging on to cent 5?however, once I edit the 
> nsswitch.conf file, I can?t even log on as root or any local users 
> anymore. Kinit seems to initialize fine doing a kinit 
> username at MYDOMAIN.COM <mailto:username at MYDOMAIN.COM> , however
doing a
> getent passwd adusername ?.it just sits there in the shell and does 
> nothing. I actually had to put all files back to where they were 
> before the change to even be able to login locally or use sudo.
> 
> I followed the steps line by line on this article but get stuck 
> everytime?.anyone has an idea or a better documented way of achieving 
> what I am trying to do , please let me know.
> 
> Thanks,
> Isaac
> 
>I'm using AD-via-Kerberos to authenticate users on several CentOS 5.1
systems.  Setting it up was as easy as a
>single command line:
>authconfig \
         >--usemd5 --useshadow --enablelocauthorize \
         >--enablekrb5 \
         >--krb5realm={AD Domain Name} \
         >--enablekrb5kdcdns --enablekrb5realmdns --update
>This makes the necessary changes to /etc/krb5.conf, /etc/ and
/etc/nsswitch.conf.  I am NOT using this for user
>information, just password authentication, so I add user accounts for each
authorized user.
>You can also consider using the --disablesysnetauth flag, which disables
authenticating "system" accounts via
>the network services and forces them to use local authorization.  This
should prevent entries in the AD for
>"root" and other system accounts from being used.
>Hope that helps!
--
>Jay Leafey - Memphis, TN
>jay.leafey at mindless.com
Ok no more errors with the pam file...guess my repos was out of sync.
Jay, did you have to put in the hostname of the dc that actually performs the
Kerberos auth? I am wondering if I need to specify this in the command or the
krb5.conf file ...It is not working for me. I am using MYDOMAINNAME.COM as the
AD domain name with and without brackets around it. Time is synced to dc.

Thanks,
Isaac