Which key is used in Kerberos?

Kerberos uses your password to derive a secret key by means of a one-way transformation algorithm. The secret key is then used to authenticate the user. The secret key is stored in the Kerberos principal database, but the actual password is never stored.

What is RestrictedKrbHost?

RestrictedKrbHost is to connect to the server itself and not any service. Host is defined for a defined service on the hosting server. So if you wanted to use SQL (Port 1433) you would need to use the host spn for the sql service running on that box.

Is Kerberos A encryption?

Kerberos can use a variety of cipher algorithms to protect data. A Kerberos encryption type (also known as an enctype) is a specific combination of a cipher algorithm with an integrity algorithm to provide both confidentiality and integrity to data.

How many keys does Kerberos use?

First, there are three crucial secret keys involved in the Kerberos flow. There are unique secret keys for the client/user, the TGS, and the server shared with the AS. Server secret key: Hash of the password used to determine the server providing the service.

How many keys shared Kerberos?

Step 2: The Kerberos KDC provides scalability Because every entity needs to share a secret key with every other entity, we will need 10 keys.

What is Kerberoasting?

Kerberoasting is an attack that abuses the Kerberos protocol to harvest password hashes for Active Directory user accounts with servicePrincipalName (SPN) values — i.e., service accounts.

What does Spns stand for?


Acronym Definition
SPNS Special Projects of National Significance
SPNS Scottish Place-Name Society (est. 1996; University of Edinburgh; UK)
SPNS Pharmacy and Nutrition Students’ Society

What is the purpose of setspn?

A common configuration step when establishing a Kerberos authentication method is the use of a Service Principal Name, or SPN, to identify a specific service. This article shows you how to specify a user or computer account to be identified with that specific service by using the SetSPN utility.

How do I find my SPN?

To view SPNs (Service Principal Names) registered for a security principal, you can use the Setspn command from the Windows 2003 Support Tools, using the -l parameter and the name of the server. The following example shows the SPNs for a Microsoft Exchange Server system.

What are the types of Kerberos?

Kerberos Encryption Types

  • des-cbc-md5.
  • des-cbc-crc.
  • des3-cbc-sha1-kd.
  • arcfour-hmac-md5.
  • arcfour-hmac-md5-exp.
  • aes128-cts-hmac-sha1-96.
  • aes256-cts-hmac-sha1-96.

How do I check Kerberos encryption?

Click Computer Configuration > Policies > Windows Settings > Security Settings > Local Policies > Security Options. Double-click Network security: Configure encryption types allowed for Kerberos. Select one of the following encryption-type couplings.