Red Hat :: RHEL Authenticate To Active Directory Using LDAP
Apr 29, 2011
I manage to get RHEL Authenticate to Active Directory using LDAP and Kerberos. When a user authenticate to the Unix, the Unix system will check (using Kerberos) to the AD. However I just found out that when the RHEL (LDAP) did the authentication to the AD (to ensure that the RHEL has the right permission to query the LDAP database), it uses simple bind which send the username/password unencrypted over the network.
1) Can We use Kerberos as well? for the initial authentication described above?
2) If Not possible, is there a way to encrypt the username/password in the storage (ldap.conf -because it's world readble)? I know that for tranmission I can use SSL.
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Feb 26, 2011
We have a small group of linux servers, currently with local logins. I want to eliminate the local logins and authenticate against the corporate AD. I've been looking at PAM - but winbind requires each machine to be added to the AD. This becomes a pain if we create new virtual or physical servers. Is it possible to have one server authenticate directly with AD, and the other servers authenticate against this server, which defers to the one server that is registered in AD?
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Feb 5, 2010
I have running on RHL enterprise 4. I want to configure squid users to authenticate against windows 2003 active directory. How do I go about from scratch
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Nov 9, 2010
I'm having a problem with squidguard filter with AD authentication. I have downloaded the latest stable source package from squidguard site and I followed the instructions for the ldap(AD) authentication but it does not work at all.I have googled and tried everything but no luck. (first 30 hits on google) Anyway this is the LDAP auth part: http://www.squidguard.org/Doc/authentication.html at squidguard and this is how to build the package.
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Nov 19, 2010
(This was posted at the end of another thread, where it probably didn't belong, so reposting here)I have Active Directory set up on one machine (and I can't really adjust the settings very much) and Ubuntu Server 10.04, which I would like to use as a client.I followed the directions at https://help.ubuntu.com/community/LD...Authentication, but when I get to
Code:
getent passwd
I don't see anything from the LDAP, and ssh'ing into the box from an LDAP/AD username certainly doesn't work.
In addition, I've attempted to use Webmin's LDAP Configuration module to configure it. I can connect to the server and can browse it with the LDAP browser with my settings, but the Webmin package doesn't recognize the users (which are organized in one of four Organizational Units (OUs) within the OU that I have as my Search Base) as users,
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Jun 7, 2010
I want to use LDAP on SUSE 10 to authorize the use of certain objects within IBM's MQ Series via the setmqaut command. I do not want to authenticate these users to the Linux server itself via LDAP. Users that actually log onto the Linux server will be authenticated through a product from Quest formly known as VAS. My question is, does LDAP require the use of PAM or can I utilize the facilities within LDAP to communicate with a Windows Active Directory so that I can authorize the use of MQ Series objects and not authenticate actual users that would log onto the server.
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Sep 30, 2009
I am looking for help connecting my mainframe Linux to the active directory world.
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May 13, 2010
The company I work for, as usual, is Microsoft-centric. I'm attempting to integrate my Ubuntu server into the domain to allow domain users to authenticate to the server and access file shares using Samba. Here's my current configuration:
[Code].....
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Mar 22, 2009
Attach a Fedora/RHEL/CentOS system to an Active Directory DomainBelow is a step by step outline of how to configure a Linux Samba fileserver to use an Active Directory domain for authentication and authorization in place of flat files. Note that this configuration has been replicated using Fedora 10, RHEL 5.3 and CentOS 5 since they all more or less share the same code base.me of the example server in this document is erver1.domain.forest.org, substitute correctly where appropriate. At the very least following packages must also be installed:
sambasamba-commonsamba-clientkrb5-workstationopenldap-clientsIt would be prudent to understand the underlying concepts of how Kerberos and Samba work prior to deploying this type of server. I find that SE-Linux will interfere with Samba services, particularly with winbind. I usually set SE-Linux to be in a permissive mode. It is possible to update the SE-Linux policies but that is outside the scope of this document, i.e you're on your own. In some cases I turned SE-Linux off since it was causing winbind to stop responding.
1. Set NTP to use the correct server for your Active Directory domain:shell> system-config-timeSet the primary NTP server to be your domain/forest NTP server2. Make backups of and edit the following system configuration files:a. shell> cp /etc/resolv.conf /etc/resolv.conf.bakb. shell> vi /etc/resolv.conf
nameserver dns_server1_ip_address
nameserver dns_server2_ip_address
search domain.forest.org
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Nov 19, 2009
I had 11.1 for some time, was working fine. decided to upgrade... long story short - did a fresh install with livecd of the 11.2. I use ldap server for authentication, its on the lan. configuration during install goes through fine. fetch dn, etc... then after the bootup - authentication error for any user except root. At the same time automounter works fine, ldap requests are going through for hosts (my local hostnames are also on this ldap server), I can edit users through YAST when logged on this box, but alas! even for "su - user" I get "incorrect password", whereas if I am root, then "su - user" gets me logged in as user. password does not go through!
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Jan 3, 2011
Ldapscripts seems to be authenticating oddly but I am not sure why. Running 'ldapadd' works without issue:
<code>root@domainator:~# ldapadd -D cn=root,dc=example,dc=home -W
Enter LDAP Password:
<CTRL-D>
root@domainator:~#
</code>
However:
<code>
root@domainator:~# ldapaddgroup test
>> 01/03/11 - 22:16 : Command : /usr/sbin/ldapaddgroup test
ldap_bind: Invalid credentials (49)
ldap_bind: Invalid credentials (49)
Error adding group test to LDAP
Error adding group test to LDAP
</code>
Here's various parts of my /etc/ldapscripts/ldapscripts.conf:
<code>
SERVER="domainator"
BINDDN="cn=root,dc=example,dc=home"
BINDPWDFILE="/etc/ldapscripts/ldapscripts.passwd"
SUFFIX="dc=example,dc=home" # Global suffix
GSUFFIX="ou=Groups" # Groups ou (just under $SUFFIX)
USUFFIX="ou=Users" # Users ou (just under $SUFFIX)
MSUFFIX="ou=Computers" # Machines ou (just under $SUFFIX)
GIDSTART="10000" # Group ID
UIDSTART="10000" # User ID
MIDSTART="20000" # Machine ID
</code>
/etc/ldapscripts/ldapscripts.passwd permissions are root:root, 0400 a
And I have quadruple checked my password is correct. Is there a way to print out debugging from ldapscripts so I know what commands it is generating?
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Aug 3, 2011
I have a query regarding login to roundcube via dovecot ldap. I have installed and set up the openldap on Ubuntu Server 11.04 with the help of the following article [URL]. I have also installed Postfix, Dovecot, Dovecot-ldap and roundcube as the mail client. Then, I went on to test if I can login through roundcube. I received "login failed". I'm sure the dovecot is running fine as well as Postfix and openLDAP server. All I can find from the log was "auth(default) LDAP: Can't connect to server: localhost".
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Jul 31, 2010
I'm using Ldap to authenticate some services in my company, but from a few days, i finds some errors saying
Quote:
I'm using webmin to manage its servces.
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May 5, 2010
I'm trying to set up a Samba share that's available over the network to a group of users in our institution. Our infrastructure is based on Novell Netware (slowly migrating to OES), and thus our authentication is managed by eDirectory. All our other shares are managed by Netware, but this one lives on a standalone Ubuntu server.
I've succeeded in setting up the share, and users can access it without a problem. The trouble is that currently it only works by treating all users as guest users and giving them the same privileges over the share. Is it possible to get Samba to authenticate users against eDirectory via LDAP? Would I have to get Ubuntu to authenticate against eDirectory, then Samba against Ubuntu, or can Samba do it directly? I've not really worked with LDAP before so I'm unsure where to start.
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May 13, 2010
How can I make the user in remote LDAP server to be used to authenticate Local Linux server ?
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Aug 9, 2011
When ever I have an issue with our LDAP server (which I was able to fix) we see the following errors in /var/log/messages and it causes problems with our services running on that box, e.g. httpd, nrpe, xinetd, etc. Aug 8 17:44:42 hostname httpd: nss_ldap: failed to bind to LDAP server ldap://serveraddress/: Can't contact LDAP server Aug 8 17:44:42 hostname httpd: nss_ldap: reconnecting to LDAP server (sleeping 64 seconds)... I am only wanting to authenticate SSH and Sudo and not services like httpd, nrpe, xinetd etc.
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Jun 4, 2009
So far, I've been able to get my Box (Centos 5.3) authenticate users through LDAP. My next plan was to automount their home directory from our NAS device.But I'm struggling getting autofs talking to the LDAP Server.My Config Files:
/etc/ldap.conf
[root@tmplt_CentOS-5 ~]# egrep -v '^#|^$?' /etc/ldap.conf
base ou=intern,o=zde,dc=simiangroup,dc=com
[code]....
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Jan 11, 2011
How to authenticate Samba server with another LDAP Server.
- I would like to set up samba server(CentOS5 samba version 3.0.33)for sharing directory. WindowXP client will can access to samba if username and password match with username and password of another existing LDAP server.
- I only know URL and DN of LDAP server and can not modify anything on LDAP Server.
- Can I config at samba server for requirement above.
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Jan 10, 2011
I started a new job and they use LDAP here. I built a new RHEL 5.5 server and configured LDAP. Usernames are recognized but the password is not. I can chown a file to a user name but when I try to login as the user it won't accept the password.I know the password is correct because I can login to any of the old boxes and it accepts the password. I ran authconfig-tui to tell my RHEL box to authenticate to ldap.
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Mar 8, 2011
I have installed ldap and phpldapadmin.configuration looks like /etc/ldap.conf I added the lines
Quote:
base dc=devnet,dc=gd,dc=com
uri ldap://10.10.1.51/
/etc/openldap/ldap.conf
[code].....
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Nov 24, 2010
I'm a network services rookie and I am seeing this error, but it doesn't seem to be effecting functionality. Nov 22 12:12:16 r01 nscd: nss_ldap: reconnected to LDAP server ldap://10.5.1.4 after 1 attempt This error is scattered through out my logs. We are authenticating this Red Hat server to another OpenLdap server. Everything seems to work just fine and we are not even using Kerberos as this is a render server. We set-up ldap right in the GUI, nothing fancy.
RHEL 5.4, Basic install, again, nothing fancy. LDAP does seem to be working fine and allows the right people to login to the machine. We have two of these machines running and both are configured exactly the same and getting the same errors.
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May 3, 2010
I've been trying to find a single set of instructions that define how to configure Fedora 12 to authenticate using Active directory without 100 steps (plus or minus) but difficult at best. I have about 12 Fedora 12 servers running as stand alone servers in a Windows 2003 network.
Can someone point me to a great set of instructions that can easily be replicated across multiple servers and a few workstations?
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Nov 16, 2010
I have set my Ubuntu 10.04 box with our Windows domain. I can see from "net ads info" that I am on the domain. I can also get the password and group info with getent.So far so good. But I have tried to configure pam basically by following this guide:http://www.ccs.neu.edu/home/battista...nbind/pam.html
Yet when I try to su or login as an AD user I just get and immediate "Unknown id: <userid>".I have had a look at /var/log/auth.log and there are no errors there.Can anyone provide some tips on debugging the pam configuration?
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Jun 17, 2011
I'm actually a software developer, develop exclusively on Linux, and do know how to go about taking care of a Linux distro, so don't start telling me that 'sudo' isn't a sushi roll...
Question... I want to implement an Active Directory like authentication in a Linux-only environment. My office has approximately 15-25 local desktop PCs all running Ubuntu 10+ and one Ftp & SVN server running Ubuntu 10+.
Each developer has his/her own personal local account on his PC, and the shared PCs have different, local accounts for those developers. The FTP server has ONE (!!) account that everybody uses to access it, as does SVN.
The big picture is that I would like to install & configure a VPN server for remote developers. Before doing that, I'd like to find a way to unify the users across the network so that there exists only one UserX in the network.
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Jul 18, 2010
I want to integrate the postfix with active directory that postfix can get the user information from active directory.
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Oct 23, 2010
I have AD DS installed on Windows Server 2008 R2. Also, I've got SLES 10.3 as NFSv4 server, which will allow remote users to mount their /home partitions. What I need, is NFSv4 w/Kerberos. As AD server already has integrated Kerberos server, I need SLES to authenticate in it.Everything works good, but when it comes to svcgssd service activation, I receive an error.Here's the log:
/usr/sbin/rpc.svcgssd -f
ERROR: GSS-API: error in gss_acquire_cred(): Miscellaneous failure - No principal in keytab matches desired name
[code]....
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May 6, 2009
My boss has commissioned me with creating a new file server to replace a M$ server that is installed now. We want to go with Linux for many reasons, but one big thing we want to be able to do is still manage permissions using M$ type permissions from our XP desktop's rather than unix style permissions. How would this be accomplished on a CentOS box?
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Feb 9, 2010
I have a freshly installed CentOS 5.4 box which I'm trying to get AD authentication working on. I have AD authentication via kerberos working for SSH, but when I try and have it work for SMB shares I'm getting an access denied error. What's even more odd is that when I tell pam to use winbind to authenticate SSH...it works just fine. Wbinfo -a username%password authenticates fine and getent passwd and group enumerates the AD users and groups ok. My smbd.log was throwing the following error "Failed to verify incoming ticket with error NT_STATUS_LOGON_FAILURE" but has since stopped for some reason, but googling this indicated I needed re-join the machine to the domain, which I have.
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Jun 7, 2011
I have tried using likewise but I came across this yesterday. When you install Likewise only on a Linux, Unix, or Mac computer and not on Active Directory, you cannot associate a Likewise cell with an organizational unit, and thus you have no way to define a home directory shell in Active Directory for users who log on the computer with their domain credentials. I am trying to pull attributes from acitve directory.. namely the homeDirectory
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Mar 10, 2011
I've joined my box to an AD domain and set it to allow user logins via AD. In 11.2 I could choose my domain vs local login when X started up, in 11.4 I can not find that ability.
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