Can an account have multiple SPNs?

Can an account have multiple SPNs?

A given service instance can have multiple SPNs if there are multiple names that clients might use for authentication. Before the Kerberos authentication service can use an SPN to authenticate a service, the SPN must be registered on the account object that the service instance uses to log on.

Does SQL Server service account need sysadmin?

The SQL Server Agent service account requires sysadmin privileges in the SQL Server instance that it is associated with.

How do I add a SPN to my service account?

Adding SPNs To add an SPN, use the setspn -s service/name hostname command at a command prompt, where service/name is the SPN that you want to add and hostname is the actual host name of the computer object that you want to update.

What is server SPN?

service principal name
A service principal name (SPN) is the name by which a client uniquely identifies an instance of a service. The Kerberos authentication service can use an SPN to authenticate a service.

What is SPN value?

The spn value is formatted as service name / fully qualified domain name . And REALM is the realm name that is configured in the Kerberos initialization file. For example, if dqm is the service name, dqm/[email protected] .

What is a duplicate SPN?

In the case of a duplicate SPN, what can happen is that the KDC will generate a service ticket that may be created based on the shared secret of the wrong account. Then, when the client provides that ticket to the service during authentication, the service itself cannot decrypt it and the auth fails.

What is the SQL Server Agent service account?

The SQL Server Agent service startup account defines the Windows account that SQL Server Agent runs as, as well as its network permissions. This topic describes how to set the SQL Server Agent service account with SQL Server Configuration Manager in SQL Server by using SQL Server Management Studio.

How do I check if a SPN is registered?

Verify SPN has been successfully registered Using SETSPN Command Line Utility. In Command Line enter the following command: setspn -L and press enter. Next, you need to look for registered ServicePrincipalName to ensure that a valid SPN has been created for the SQL Server.

What is the difference between NTLM and Kerberos?

The main difference between NTLM and Kerberos is in how the two protocols manage authentication. NTLM relies on a three-way handshake between the client and server to authenticate a user. Kerberos uses a two-part process that leverages a ticket granting service or key distribution center.

How can I tell if SQL Server is registered SPN?

How can I tell if my server is using Kerberos authentication?

Kerberos is most definately running if its a deploy Active Directory Domain Controller. Assuming you’re auditing logon events, check your security event log and look for 540 events. They will tell you whether a specific authentication was done with Kerberos or NTLM. This is a tool to test Authentication on websites.

Can a group managed service account be linked to multiple hosts?

We will create a new AD group that will contain all our SQL Servers that will be using the Group Managed Service Account. Although an account can be linked directly with multiple hosts it is much easier for administrating it using an AD container.

What should my SPN entries look like for each SQL Server?

That seems to contradict this older (2011) MS document, not just about the port number, but also concerning what name to use: To create the SPN, you can use the NetBIOS name or the Fully Qualified Domain Name (FQDN) of the SQL Server. However, you must create an SPN for both the NetBIOS name and the FQDN.

When to use group managed service accounts in SQL Server?

With Windows Server 2012 the Group Managed Service Accounts were introduced, it provides the same functionality within the domain, but also provides the possibility to use it over multiple servers. They can be used for standalone and clustered installations of SQL Server.

Where to find AD DS snap-ins in SQL Server?

SQLSVCACCOUNT=”ADVENTUREWORKS\\PrdSQLgMSAsvc$”. First, within the Server Manager console open the “Add roles and Features Wizard” and locate the “AD DS Snap-Ins and Command-Line Tools”, “AD LDS Snap-Ins and Command-Line Tools” and “Active Directory module for Windows PowerShell”. The feature installation does not require restart.