I'm trying to secure my CDH cluster using Kerberos but I want to use the user info that I have in my Microsoft Active Directory.
Is there a way to use MS AD as Kerberos user lookup source?
Yes, MS AD is actually an umbrella set of technologies working together to provide enterprise directory services. The big four, as I call them, are Kerberos, LDAP, DNS and Group Policy. Each MS AD domain controller runs a Kerberos KDC, which is a database of user, service, and computer principals.
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we have been using office 365 E3 for the past number of years. we would like to configure a windows 2019 essentials server locally for file storage and a few shared applications (ie quickbooks multi-user).
is there a process to pull the user information from azure active directory to the local server? any advice is greatly appreciated.
thank you!!
If my understanding is correct, you really want is to be able to grant admin rights to your Azure AD users and allow them to login to the server with their regular Azure AD credentials.
If yes, then most optimum way of doing is to have on prem AD and have you user synced up from Azure AD to local AD. Azure AD Connect comes pretty handy in this scenario.
You can also take a look at Azure AD DS, Azure Active Directory Domain Services (Azure AD DS) provides managed domain services such as domain join, group policy, lightweight directory access protocol (LDAP), and Kerberos / NTLM authentication that is fully compatible with Windows Server Active Directory. You use these domain services without the need to deploy, manage, and patch domain controllers in the cloud. Azure AD DS integrates with your existing Azure AD tenant, which makes it possible for users to sign in using their existing credentials.
https://learn.microsoft.com/en-us/azure/active-directory-domain-services/overview
Check this link as well for additional reference:
https://serverfault.com/questions/808047/how-to-manage-on-premise-servers-using-azure-ad-credentials
Hope it helps.
We have an AD in MS AZURE cloud and IBM Access Manager in our in house datacenter.
I like to know what is the best way to synch users between these 2 system?
But that I mean, user will be added to AD in cloud. at the same time I want the same user to be added in Tivoli Access Manager. I am looking for the best approach
Thanks
Microsoft Azure Active Directory Adapter is an interface between a managed resource and the IBM® Security Identity server. The Microsoft Azure Active Directory (Azure Active Directory Adapter) uses the Tivoli® Directory Integrator functions to facilitate communication between the IBM Security Identity server and Microsoft Azure Active Directory (Azure Active Directory).
Adapters can be installed on the managed resource. The IBM Security Identity server manages access to the resource by using the security system. Adapters function as trusted virtual administrators on the target operating system. The adapter creates, suspends, restores user accounts, and other functions that administrators run manually. The adapter runs as a service, independently of whether you are logged on to the IBM Security Identity server.
The adapter automates several administrative and management tasks.
You can use the adapter to automate the following tasks:
Create, modify, suspend, restore, change password, and delete a user.
Create, modify, and delete group.
Reconcile user and user attributes.
Reconcile group and group attributes.
Reference - IBM Security Identity Manager: Microsoft Azure Active Directory Adapter Installation and Configuration Guide
I have a question about installing SQL server and a SP2016 development farm. I can install both but my boss asked me questions about installing SPN (Service Principal Name) in the AD. But I don't know why and how an SPN is linked with SQL and SharePoint.
I've done some research on the web and got some terms "Kerberos" but I installed SharePoint with NTLM. Help me understand why SPNs would be useful in this case.
What is a Service Principal Name?
The SPN represents the service entry point into your SQL server for clients to find (using DNS) when they will be using Kerberos authentication.
SPNs are written as a service followed by the fully-qualified DNS name of the IP host the service is running on, (and sometimes optionally, appended with the Kerberos realm name appended to the end). For example if your SQL server were named 'sqlserver1' and your AD domain name was 'acme.com' would be written as: MSSQLsvc/sqlserver1.acme.com.
The SPN itself is found inside the Kerberos database, and clients during the authentication process reach out to DNS to find the IP target host and the Kerberos database (KDC) holding the service principal, grab a Kerberos service ticket from the KDC and use that to single sign-on authenticate to the server running on the target service named in the SPN.
Configuring SPNs
In AD, in the properties of the computer object representing your SQL server, you will add the SPN, and optionally configure Kerberos delegation for that service. You could optionally add the SPN to a user account running the SQL service in AD instead.
In your scenario, Kerberos should actually be the primary authentication method, with NTLM used only as a fallback. If you setup up DNS, AD, Kerberos delegation and the target server correctly, you should never have to fallback to NTLM. With SharePoint, you would use Kerberos to SSO into SharePoint, and then you could optionally allow Kerberos delegation for that same user account to be able to run SQL statements own the SQL DB server as themselves.
None of this is for the faint of heart, and I have actually not setup this precise scenario myself, I just know the underlying concepts; instead my experience is mainly setting up Kerberos SSO to Active Directory authentication to web applications running on Linux platforms. But you asked what an SPN was for and that's what I've answered.
Further Reading
I googled and found this link for you for actually setting up your scenario, it talks about configuring SharePoint with Active Directory with SQL server using Kerberos delegation: Plan for Kerberos authentication in SharePoint 2013
My small company (about 100 users) is currently using Office 365. There have previously not been any domain controller. I am building an on premise domain controller and want to sync it with Azure Active Directory (Office 365). I used the sync service, with a small subset of users to no avail.
My main question: Can you sync FROM an Azure Active Directory to a new on premise Active Directory? My understanding is that it's the opposite - the on premise Active Directory is the "master" if you will. Is there a way to set it up the opposite? As in, Office 365 being the "master" or "seed" for an on premise?
At present, the Azure AD connect support the Password writeback, Group writeback and Device writeback.
You can refer the options features of Azure AD Connect from here.
At this point in time, synchronizing users FROM Azure AD to on-premises AD is NOT possible.
As Fei Xue pointed out, there are certain things (such as user passwords, groups and devices) that can be synchronized back to on-prem AD, but not users.
Depending on what you are trying to achieve, Azure Active Directory DS might be worth exploring as it allows you to create a VNet in Azure which has a AD-like support (LDAP, Active Directory domain join, NTLM, and Kerberos authentication).
More info on Azure AD DS: https://azure.microsoft.com/en-us/services/active-directory-ds/
I have windows server running ADFS server. I want to Connect to ldap server on it. My questions are
Does running ADFS Server already have LDAP Server running or need to do anything for that? I believe it is running already because I could see open port 389 and 636.
Assuming LDAP server is running, I was trying to connect to it using Google App Directory Sync to get list of users However I was not able to authorize. Is there any default credentials to connect? Or steps to get credentials for LDAP server?
Thanks
An ADFS server is not an Active Directory server - ADFS only extends Active Directory's infrastructure. Ports 389 and 636 are available because ADFS supports the LDAP and LDAPS protocols for communication, and as such, ADFS can retrieve user attributes from Active Directory, and it can also authenticate users against Active Directory. If you already have a directory server running, you need to add it to ADFS as an account store.
There are no default credentials - just use an administrative account that exists in your Active Directory store, as mentioned in point one.
To clarify on terminology for ADFS:
Account Store in ADFS: This is the account store that ADFS authenticates the user against with some form of credential (e.g. Username/password). By default ADFS connects to the Active Directory Domain Services and adds it as a special account store that cannot be deleted. So, any users in this active directory forest or in it's trusted subsystem can authenticate to ADFS. So far, ADFS only supported Active Directory as an account store and nothing else. With Windows Server 2016, it now supports connecting any LDAP v3 compliant directory as an account store. ADFS does not open LDAP ports as it is not an LDAP server. If ADFS were collocated with a domain controller, you would see LDAP ports open.
Attribute Store in ADFS: This a store where you can augment additional information about the user AFTER the user authenticates. By default ADFS has a default attribute store for ADDS that is setup by virtue of the install. Beyond this, it has in-built adapters that can be instantiated to connect to SQL or ADLDS (lightweight directory service). It also has an extensible API to connect to any other attribute store of your choice via .NET. People connect to Oracle/SAP data base, FIM metaverse etc.
#Srikanth: You will use the ADFS claims language or the UI to query for additional data using the attribute store model. In the UI, you would see it when you configure the issuance authorization rules or the issuance claims rules.
Hope that helps
Sam (#MrADFS)