[Samba] Problem with Active Directory authentication
Kaplan, Andrew H.
AHKAPLAN at PARTNERS.ORG
Fri Jun 10 12:46:13 UTC 2016
Hello --
The winbind packages that are installed on the server are the following:
Package Description
libnss-winbind 4.3.9+dfsg-0ubuntu0.14.04.3 amd64 Samba nameservice integration plugins
libpam-winbind 4.3.9+dfsg-0ubuntu0.14.04.3 amd64 Windows domain authentication integration plugin
libwbclient0 4.3.9+dfsg-0ubuntu0.14.04.3 amd64 Samba winbind client library
winbind 4.3.9+dfsg-0ubuntu0.14.04.3 amd64 service to resolve user and group information from Windows NT servers
Similarly, the ldap PAM packages are as follows:
Package Description
ldap-auth-client 0.5.3 all meta-package for LDAP authentication
ldap-auth-config 0.5.3 all Config package for LDAP authentication
ldap-utils 2.4.31-1+nmu2ubuntu8.2 amd64 OpenLDAP utilities
libldap-2.4-2 2.4.31-1+nmu2ubuntu8.2 amd64 OpenLDAP libraries
libldb1 1.1.24-0ubuntu0.14.04.1 amd64 LDAP-like embedded database - shared library
libnss-ldap 264-2.2ubuntu4.14.04.1 amd64 NSS module for using LDAP as a naming service
libpam-ldap 184-8.5ubuntu3 amd64 Pluggable Authentication Module for LDAP
sssd-ldap 1.11.5-1ubuntu3 amd64 System Security Services Daemon -- LDAP back end
Finally, the sssd packages are the following:
Package Description
libsss-idmap0 1.11.5-1ubuntu3 amd64 ID mapping library for SSSD
sssd 1.11.5-1ubuntu3 amd64 System Security Services Daemon -- metapackage
sssd-ad 1.11.5-1ubuntu3 amd64 System Security Services Daemon -- Active Directory back end
sssd-ad-common 1.11.5-1ubuntu3 amd64 System Security Services Daemon -- PAC responder
sssd-common 1.11.5-1ubuntu3 amd64 System Security Services Daemon -- common files
sssd-ipa 1.11.5-1ubuntu3 amd64 System Security Services Daemon -- IPA back end
sssd-krb5 1.11.5-1ubuntu3 amd64 System Security Services Daemon -- Kerberos back end
sssd-krb5-common 1.11.5-1ubuntu3 amd64 System Security Services Daemon -- Kerberos helpers
sssd-ldap 1.11.5-1ubuntu3 amd64 System Security Services Daemon -- LDAP back end
sssd-proxy 1.11.5-1ubuntu3 amd64 System Security Services Daemon -- proxy back end
sssd-tools 1.11.5-1ubuntu3 amd64 System Security Services Daemon -- tools
Will removing all packages for the first two groups solve this problem?
From: samba [samba-bounces at lists.samba.org] on behalf of Rowland penny [rpenny at samba.org]
Sent: Friday, June 10, 2016 8:29 AM
To: samba at lists.samba.org
Subject: Re: [Samba] Problem with Active Directory authentication
On 10/06/16 12:47, Kaplan, Andrew H. wrote:
> Hello --
>
> I started a thread on the list that you suggested in your e-mail, and thank-you for the reference.
>
> Also, I checked the auth.log file on the server, and the following entries were present:
>
> I checked the auth.log file, and the following entries were present:
>
> Jun 10 07:10:50 <samba server> sshd[7419]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=<fqdn> user=<username>@<domainname>
> Jun 10 07:10:51 <samba server> sshd[7419]: pam_winbind(sshd:auth): getting password (0x00000388)
> Jun 10 07:10:51 <samba server> sshd[7419]: pam_winbind(sshd:auth): pam_get_item returned a password
> Jun 10 07:10:51 <samba server> sshd[7419]: pam_sss(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=<fqdn> user=username>@<domainname>
> Jun 10 07:10:51 <samba server> sshd[7419]: pam_sss(sshd:auth): received for user username>@<domainname> 17 (Failure setting user credentials)
> Jun 10 07:10:51 <samba server> sshd[7419]: pam_ldap: could not open secret file /etc/ldap.secret (No such file or directory)
> Jun 10 07:10:51 <samba server> sshd[7419]: pam_ldap: ldap_simple_bind Can't contact LDAP server
> Jun 10 07:10:51 <samba server> sshd[7419]: pam_ldap: reconnecting to LDAP server...
> Jun 10 07:10:51 <samba server> sshd[7419]: pam_ldap: ldap_simple_bind Can't contact LDAP server
> Jun 10 07:10:53 <samba server> sshd[7419]: Failed password for invalid user username>@<domainname>from <ip address> port 49847 ssh2
>
>
> ________________________________________
> From: Sumit Bose [sbose at redhat.com]
> Sent: Friday, June 10, 2016 4:44 AM
> To: Kaplan, Andrew H.
> Cc: samba-technical at lists.samba.org; samba at lists.samba.org
> Subject: Re: Problem with Active Directory authentication
>
> On Wed, Jun 08, 2016 at 07:46:00PM +0000, Kaplan, Andrew H. wrote:
>> Hello --
>>
>> We are running the 14.04.3 LTS 64-bit release as a virtual machine on a Vmware appliance. The goal of the installation is to create a Samba server that utilizes Active Directory authentication. To that end I utilized the following procedure:
>>
>> http://www.kiloroot.com/add-ubuntu-1...n-credentials/<http://www.kiloroot.com/add-ubuntu-14-04-server-or-desktop-to-microsoft-active-directory-domain-login-to-unity-with-domain-credentials/>
>>
>> Afterwards, I referenced the following documentation to confirm that all configuration files had the appropriate entries:
>>
>> https://help.ubuntu.com/lts/serverguide/sssd-ad.html
> The sssd-users list
> https://lists.fedorahosted.org/archives/list/sssd-users@lists.fedorahosted.org/
> might be more appropriate for your question.
>
> As a general comment, the PAM configuration is important here. Please
> check the system logs which PAM module was consulted during the login
> attempt and which cause the rejection.
>
> HTH
>
> bye,
> Sumit
>
>> The problem is the following: I am unable to log into the server from the console or via SSH using my Active Directory user account. The syntax that I use when doing an SSH connection is the following:
>>
>> ssh -v -l <username>@<domainname> <fully qualified domain name>
>>
>> The output that was generated is the following:
>>
>> OpenSSH_6.0p1 Debian-4, OpenSSL 1.0.1e 11 Feb 2013
>> debug1: Reading configuration data /etc/ssh/ssh_config
>> debug1: /etc/ssh/ssh_config line 19: Applying options for *
>> debug1: Connecting to <fully qualified domain name> [<ip address>] port 22.
>> debug1: Connection established.
>> debug1: identity file /home/knoppix/.ssh/id_rsa type -1
>> debug1: identity file /home/knoppix/.ssh/id_rsa-cert type -1
>> debug1: identity file /home/knoppix/.ssh/id_dsa type -1
>> debug1: identity file /home/knoppix/.ssh/id_dsa-cert type -1
>> debug1: identity file /home/knoppix/.ssh/id_ecdsa type -1
>> debug1: identity file /home/knoppix/.ssh/id_ecdsa-cert type -1
>> debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.7
>> debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.7 pat OpenSSH*
>> debug1: Enabling compatibility mode for protocol 2.0
>> debug1: Local version string SSH-2.0-OpenSSH_6.0p1 Debian-4
>> debug1: SSH2_MSG_KEXINIT sent
>> debug1: SSH2_MSG_KEXINIT received
>> debug1: kex: server->client aes128-ctr hmac-md5 none
>> debug1: kex: client->server aes128-ctr hmac-md5 none
>> debug1: sending SSH2_MSG_KEX_ECDH_INIT
>> debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
>> debug1: Server host key: ECDSA ec:09:c1:bc:d0:11:f3:8c:45:3f:dd:3a:96:ba:2a:17
>> debug1: Host '<fully qualified domain name>' is known and matches the ECDSA host key.
>> debug1: Found key in /home/knoppix/.ssh/known_hosts:29
>> debug1: ssh_ecdsa_verify: signature correct
>> debug1: SSH2_MSG_NEWKEYS sent
>> debug1: expecting SSH2_MSG_NEWKEYS
>> debug1: SSH2_MSG_NEWKEYS received
>> debug1: Roaming not allowed by server
>> debug1: SSH2_MSG_SERVICE_REQUEST sent
>> debug1: SSH2_MSG_SERVICE_ACCEPT received
>> debug1: Authentications that can continue: publickey,password
>> debug1: Next authentication method: publickey
>> debug1: Trying private key: /home/knoppix/.ssh/id_rsa
>> debug1: Trying private key: /home/knoppix/.ssh/id_dsa
>> debug1: Trying private key: /home/knoppix/.ssh/id_ecdsa
>> debug1: Next authentication method: password
>> <username>@<domainname>@<fully qualified domain name>'s password:
>> Connection closed by <ip address>
>>
>> Does anyone have thoughts on this?
>>
>> Thanks.
>>
>>
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As Sumit has said, this should be on the sssd mailing list.
From your log fragment, it looks like you have the winbind and ldap PAM
packages installed, you do not need them.
Rowland
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