I am looking for advice on securing domain controller to domain controller communication, specially LDAP and moving to LDAPS. I believe that global catalogue uses LDAP to update and wanted to know how we can change this to LDAPS without disabling LDAP entirely because at this moment in time we have hundreds of applications on member servers using LDAP and don't want to break that until we migrate away from those applications?
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I want to connect my samba active directory server with my nextcloud. I cant find ANY information if samba4 has ldap or not? or how i could install openldap with it so that my active directory accounts and passwords are the same as in the nextcloud.
How to configure LDAP on an Samba4 Active Directory Server?
• Samba4 does have support for LDAP server but it has to be integrated with Active Directory or OpenLDAP to provide a schema and other related attributes to be used with other applications dependent on it for authentication.
• And since, configuring OpenLDAP as a backend for the Samba4 server is considered as legacy because it is best integrated with its own LDAP server in AD mode. But still if you want to configure OpenLDAP in the backend with Active Directory providing authentication to external applications, the directory schema will still be AD schema. So, you will have to update external applications accessing the directory using, such as you must do it when you use the Samba internal LDAP server. Additionally, you will have to import attributes manually from the old LDAP server that are not included in the AD schema. Even though, if you want to configure OpenLDAP as the backend with Active Directory, please find the detailed steps in link below: -
https://ubuntu.com/server/docs/samba-openldap-backend
• Also, please note that it is not planned to support OpenLDAP as backend for Samba AD as a significant part of the complexity of the AD DC is in the LDB modules such as creating a general-purpose OpenLDAP back end requires rewriting many of these modules as OpenLDAP overlays, outside the standard Samba programming environment wherein specific problems include the metadata required for both DRS replication and dirsync, schema manipulation, transactions, and access control lists. Please find the below link for detailed steps on configuration of ADDC on Samba4 server and integrating it with internal LDAP server: -
https://wiki.samba.org/index.php/Setting_up_Samba_as_an_Active_Directory_Domain_Controller
• Also, on connecting your Samba4 AD server with nextcloud, you can do it so readily as Nextcloud ships with an LDAP application to allow LDAP users (including Active Directory) to appear in your Nextcloud user listings which will authenticate to Nextcloud with their LDAP credentials, so you don’t have to create separate Nextcloud user accounts for them. Please find the below link on detailed information for its configuration: -
https://docs.nextcloud.com/server/latest/admin_manual/configuration_user/user_auth_ldap.html
We use LDAP and our local SQL Server databases to authenticate our users, using Apache Shiro as the app is developed with Apache ISIS. Users in the SQL Server database are REST consumers, while LDAP contains only business users. Lastly, I was instructed to move my LDAP users to MS AAD.
Is there an architecture that allows me to keep both users? Business users will access the app through the MS OpenConnect portal. At the same time, other applications can continue using DB authentication to consume REST APIs.
Yes, it's possible. Actually, the essential of your questions is "how to enable multiple authentication manner s in web app". Since AAD authentication is claimed based, very different from LDAP, so you will need to change your code for sure to upgrade from LDAP to AAD.
Regarding multiple authentication, I don't know the platform you're using. Here is an sample for ASP.NET CORE for your reference:ASP.NET Core: Supporting multiple Authorization
I am fairly new to Active directory and trying to understand it especially from application roles perspective.
I understand the use of Active Directory for authenticating internal corporate users and to implementing SSO across different applications.
What I am trying to gather are scenarios where Active directory can be used for application security ? Is it limited to creating domain users for application to use when interacting with other applications or are there other scenarios where it can be used ?
Example, in below diagram AD DS server has been added to the application landscape for 'computer objects for the failover cluster and its associated clustered roles are created in Active Directory Domain Services (AD DS)'. What does it really mean ?
Azure Active Directory (Azure AD) provides secure and seamless access to cloud and on-premises applications. Users can sign in once to access Office 365 and other business applications from Microsoft, thousands of software as a service (SaaS) applications, on-premises applications, and line of business (LOB) apps. Besides, enabling single sign-on (SSO) across applications and Office 365 provides a superior sign in experience for existing users by reducing or eliminating sign in prompts. For the details, you could read here.
And Azure AD Domain Services provides managed domain services. You can consume these domain services without the need for you to deploy, manage, and patch domain controllers in the cloud. Azure AD Domain Services integrates with your existing Azure AD tenant, thus making it possible for users to log in using their corporate credentials.
For the details about Azure AD Domain Services, please read this doc.
I have few very specific questions to come to a understanding on Active Directory usage:
ADFS are the services/software to enable SSO login to applications using a single url for users stored in Active Directory. Right?
LDAP is a protocol that exposes other functionalities like fetching users, deleting user, authentication user via bind method etc. stored in Active Directory. Right?
Then can't LDAP and ADFS both work on the same Active directory? This link:
LDAP support in ADFS got me confused in where it is referring to LD and AD as separate entities.
Can't I apply both the mechanisms on same AD? I only have knowledge of LDAP. Trying to learn ADFS.
ADFS provides SSO capabilities for SaaS services and Modern LOB applications. Traditionally, it uses identities stored in Active Directory Domain Services to validate the credentials for a user. In 2016, we also added support to include identities stored in any 3rd party LDAP directory.
Irrespective of where the identity is stored ADFS offers SSO across the applications that trust it.
Hope this clarifies.
Thanks //Sam (Twitter: #MrADFS)
AD stores users, groups and credentials.
To access an attribute in AD, you use the LDAP protocol via e.g. the C# Directory Services API.
ADFS handles authentication against AD and also adds a federation layer on top of AD.
The correct way to access AD attributes via ADFS is to use claims-based authentication whereby you configure ADFS to provision the attributes (as claims) into the token and then extract them on the client side.
This is perhaps a dumb question, but I am entirely new in this area and I apologize in advance if it is.
I understand the relationship between Active Directory and LDAP (i.e. LDAP is a protocol that a database based system like Active Directory may use to perform authentication tasks).
However, what does a Central Authentication Service (CAS) Server need to have in addition to an AD to support SSO? Essentially, I'm trying to find out what's the difference between an LDAP server that runs AD and a CAS server.
Essentially Active Directory is a directory server by Microsoft that is accessible over LDAP. LDAP is an open standard protocol for accessing directory servers.
CAS is a server for authenticating users and providing single sign on across disparate clients. CAS can use Active Directory as a source for authentications. CAS can also use LDAP to authenticate users against LDAP capable directory servers.
Have you seen this page? It will hopefully illustrate the overall architecture for you.
https://apereo.github.io/cas/4.2.x/planning/Architecture.html