I have specified the LDAP filter option as uid=${username} to get the username. I also need to get other attributes such as organization, telephone no, email etc.. I have only one LDAP store configured in my system. I know all the configuration steps to acheive it. I am struck with the LDAP filter to get those attributes. That's where I am getting error.
for eg, in order to get organization, I should give something like o=${SOMETHING}
How to provide the filter?
Please let me know.
Thanks,
Aswini J
I'm assuming you have already specified in the Assertion Mapping screen that you wish to "Retrieve Additional Attributes" and that you then added your existing LDAP Data Store.
The filter is simply used to locate a single user's record that you wish to return the associated attributes from. In the previous Admin screen (LDAP Directory Search) is where you specify the user attributes you wish to return. You simply specify your LDAP Base DN and then select the attributes from the drop-down list. You can find more information in the Admin Guide -
http://documentation.pingidentity.com/display/PF73/Configuring+an+LDAP+Directory+Search#ConfiguringanLDAPDirectorySearch-2232188
After choosing the attributes, you then get to setup your LDAP Filter where something as simple as "uid=${username}" will usually suffice. It really depends on what user identifier is coming in from your IDP Adapter and how specify that lookup needs to be. If you're using the HTMLForm Adapter, then chances are your users are entering their LDAP userID values.
Related
In setting up User Federation from an LDAP provider, there are three LDAP attributes:
Username LDAP attribute
RDN LDAP attribute
UUID LDAP attribute
How does the value of each of these impact Keycloak or the sync process?
For instance, if the directory ensures unique email addresses, are there any negatives to using mail as the UUID LDAP attribute?
Where can I find details on each of these attributes--specific to Keycloak?
In Keycloak admin console, you may hover over the tooltip - a tiny question mark - next to the LDAP attribute label if you want as much info as possible about it. I checked this on Keycloak v6.0.1 but I assume it applies to most recent versions. Such tooltip will often give more info than you can find on the Keycloak documentation website. More details about these attributes:
Username LDAP attribute: Name of LDAP attribute which is mapped as Keycloak username. For many LDAP server vendors it can be 'uid'. For Active Directory it can be 'sAMAccountName' or 'cn'. The attribute should be filled for all LDAP user records you want to import from LDAP to Keycloak. So there you could use the mail attribute if you want this as username in Keycloak. Then users would log on to Keycloak with their email address. If you enable LDAP synchronization to Keycloak local database (switch on Import Users), this will be recorded there as username.
RDN LDAP attribute: Name of LDAP attribute which is used as RDN (top attribute) of typical user DN. Usually it's the same as Username LDAP attribute, however it's not required. For example for Active directory it's common to use 'cn' as RDN attribute when username attribute might be 'sAMAccountName'. For example with a conventional LDAP directory (not Active Directory) where user DNs are typically uid=XXX,ou=people,dc=example,dc=com, you would use 'uid' there.
[EDIT 2019-05-31] The RDN attribute is actually used for instance when you create a new user in Keycloak. If you have the Edit Mode option set to WRITABLE in the settings, Keycloak synchronizes it back to the LDAP directory, i.e. creates the new user entry in LDAP. For that, it needs (among other things) the RDN and the Users DN (another option below the RDN) to make the full DN of the new user LDAP entry.
UUID LDAP attribute: Name of LDAP attribute which is used as unique object identifier (UUID) for objects in LDAP. For many LDAP server vendors, it's 'entryUUID' however some are different. For example for Active Directory it should be 'objectGUID'. If your LDAP server really doesn't support the notion of UUID, you can use any other attribute, which is supposed to be unique among LDAP users in tree. For example 'uid' or 'entryDN'. Any standard LDAP v3 directory should use entryUUID (OpenLDAP, OpenDJ...).
Regarding best practices on UUID in LDAP directories, you may look at the RFC 4530 standard.
In general, I would advise against using 'mail' as UUID, because a user's 'mail' may change (see reasons down below), whereas an entry UUID - whether it is a user entry or not - is meant to be a globally uniquely generated number (or at least contain such a number), usually generated on server side, and fixed once and for all for the entry. (Furthermore, it shall not be reused ever, even after the entry is deleted, as UUIDs should be unique in time and space.) In particular, it should be independent from any of the user's variable attributes, like email address.
Indeed, a user's email address may change during his/her lifetime in the organization for various reasons, just to name a few:
Users - women typically - may get married or divorced, and therefore may change their last name.
Top management decides to rebrand the company and therefore change the mail domain.
The company is going through a merger or an acquisition with/by another company and therefore the mail domain changes again.
...
Hello again every one,
I have a question: I successfully implemented django-auth-ldap, the LDAP users can request successfully my DRF API. But nows, for my projetc needs, I have to define permissions depending of the group.
Indeed, I will have like 12 groups in my app. Depending of the group, I will authorize or not the user to request a given route, BUT even if I defined the global var AUTH_LDAP_MIRROR_GROUPS = True, and saw in my database the are linked to a group (see capture):
Users in database
Groups from LDAP inserted in db thx to django-auth_ldap settings
User linked to the groups defined
But now, I have some other problems: I do not know how to implement permissions depending of the group the user belong. In fact, if a user belong to the group ServerAdministrator, I want to allow him to access to every route accessible, but I dont know where to see this in the received request in my view?
As I understood, I should implement custom permissions I should write programmatically in a User object (which should inherit from django AbstractUser)
If yes, How does it work? Should I empty my whole Database and then let django-auth-ldap insert users and it also will create the given permissions defined inside the database?
Maybe it is not clear, do not hesitate to ask questions if I can be more precise.
Kind regards.
Benjamin
We have integrated Websphere commerce with LDAP and the proper login flow is working fine.
We have a requirement that user can have an option to login using his phone number and also his membership card.
Currently we are storing the ph.no and membership card in LDAP database also.
We are unable to use these fields for login as well. Can someone give some pointers on the same?
WAS has Standalone and Federated LDAP authentication.
Standalone LDAP configs in WebSphere allow you to construct your own LDAP search that's used to map a web username to a DN. You can list multiple attributes using LDAP filter syntax (|(phone=%v)(membershipcard=%v)...
https://www.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/tsec_ldapfilter.html
Modify the user filter, if necessary. The user filter is used for
searching the registry for users and is typically used for the
security role-to-user assignment. The filter is also used to
authenticate a user with the attribute that is specified in the
filter. The filter specifies the property that is used to look up
users in the directory service. In the following example, the property
that is assigned to %v, which is the short name of the user, must be a
unique key. Two LDAP entries with the same object class cannot have
the same short name. To look up users based on their user IDs (uid)
and to use the inetOrgPerson object class, specify the following
syntax: (&(uid=%v)(objectclass=inetOrgPerson)
Federated registries take a semi-colon separated list of LDAP attribute names used for the same purpose.
https://www.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/twim_ldap_settings.html :
All login properties are searched during login. If multiple entries or
no entries are found, an exception is thrown. For example, if you
specify the login properties as uid;mail and the login ID as Bob, the
search filter searches for uid=Bob or mail=Bob. When the search
returns a single entry, then authentication can proceed. Otherwise, an
exception is thrown.
Both are covered in gory detail in the manual.
I am currently setting up a small server with several applications. Since no Active Directory etc is planned, but I do need a centralized user administration, I decided for LDAP since all applications are capable of authenticating against it.
I have already set up a domain "dc=example,dc=lan". It has two organizational Units. Groups and Users. My plan was, to create a posixGroup for every application, so that a user can be added to each group (if he/she was allowed to use this application).
The structure would then be (example):
for each group
cn=ejabberd,ou=groups,dc=example,dc=lan
where cn=ejabberd is of type "posixGroup"
and for users
cn=user1,ou=users,dc=example,dc=lan
where cn=user1 is of type "posixAccount"
Some, but not all, applications expect the "mail" attribute as login name. Some don't.
My problem is, that searching for users in ou=users is easy as 1,2,3 - searching in "cn=ejabberd,ou=groups,dc=example,dc=lan" is sheer driving me crazy since the users are not a "child" to this group but a "memberuid" attribute.
I have tried different filters and thought about another setup.. Just cannot think of anything different making sense right now.
Am I running down the wrong way, or maybe just blind to what's right in front of me?
I'd be glad for any finger pointing out a direction.
So here is, how I did it:
I created the following structure.
+dc=example,dc=com
+ou=groups
| +employees (PosixGroup)
| +service1 (GroupOfNames)
| +service2 (GroupOfNames)
+ou=users
| +user1 (User Account)
| +user2 (User Account)
etc..
Groups like "service1" and "service2" are of type "GroupOfNames". Furthermore I had to install the "memberOf"-Overlay so I could search for this exact attribute of a user.
This now gives me the possibility to tell each service to use a search filter that returns only the members of one special group, which will be granted access. For instance, ejabberd will use this filter:
"(&(objectClass=inetOrgPerson)(memberof=cn=ejabberd,ou=groups,dc=example,dc=com))"
Found these informations on the following website. Just take care to set the filter case sensitive! "memberOf" will not return any results, since the overlay in this example uses "memberof".
http://www.schenkels.nl/2013/03/how-to-setup-openldap-with-memberof-overlay-ubuntu-12-04/
I suggest you're on the wrong track. You don't want to authenticate by application, you just want to define overall roles that users can be in. The applications can then be defined to require certain role(s) per application funtion, web page, etc. As a limiting case, an application can be a role, but if you set out to define it that way you're overly limiting yourself.
To answer your immediate problem, you only have to search under the ou=Groups item for posixGroups which have memberUID={0} where {0} is the DN of the user. In other words the search filter is
(&(objectClass=posixGroup)(memberUID={0}))
Iterating those search results then gives you the DNs of all the groups of which he is a member.
I'm interested in how other people code this because I'm either not understanding it properly or I'm missing something or perhaps even I'm doing it right!
First of all, this is NOT an Active Directory instance of LDAP its OpenDS which other than some syntactical differences shouldn't much matter.
So assume I have my tree structure setup something like this:
-dc=somedomain,dc=com
-uid=rootuser
-ou=Group1
-uid=username1
-uid=username2
-ou=Group2
-uid=username3
-uid=username4
In order to authenticate as the 'rootuser' I would need to pass the fully qualified Username when I create my System.DirectoryServices.DirectoryEntry object, in this case:
uid=rootuser,dc=somedomain,dc=com
but for any other user in the tree I have to know in advance what LDAP path to append to the username to have them authenticate thru. So for example this will fail:
uid=username1,dc=somedomain,dc=com
but this will work:
uid=username1,dc=somedomain,dc=com,ou=Group1
So my question is how do you handle this when you don't know at login time what specific group a user belongs to to build that path? The only way I can figure to do it is to make the initial call as 'rootuser' so I have access to the entire tree then use System.DirectoryServices.DirectorySearcher to scan it for that particular user (i.e. username1)
using (DirectorySearcher searcher = GetDirectorySearcher()) {
searcher.Filter = "(&(objectClass=person)(uid=" + userName+ "))";
SearchResult result = searcher.FindOne();
return result.GetDirectoryEntry().Path;
}
at that point I have the path for the user I want to login and I can proceed with the actual auth. Am I way off base here or is this generally how it is done?
thanks!
You build a search filter on attributes that are unique to the user, e.g. screen-name, e-mail. Make sure LDAP is configured to ensure they are unique. Then you find the corresponding entry if any, get the DN, and rebind as that user with the appropriate password. If there was no such entry you react accordingly.
You don't say what language you are using, but in JNDI that means setting the DN as the security principal, the password as the credentials, and calling LdapContext.reconnect().
SASL supports the notion of using a username to authenticate. Your directory server administrator may be able to configure the directory server to map distinguished names to identities. Given the correct mapping it is possible for a client to authenticate without knowing the distinguished name. Professional-quality directory servers support a number of different mapping mechanisms such as direct mapping, exact match, regular expression, or a custom identity mapper.