Domain Controller Kerberos

Certificates issued via this new template contain two specific attributes.

Domain controller kerberos. Restart the affected domain controller. Event 4768 will show the same information for issued tgts. The blog is called.

Moving forward with enforcing aes for kerberos will require analysis and one of the best inputs for that assessment are 4769 events from the domain controller security log which show the encryption type ticket encryption type field of issued service tickets. Active directory domain services is required for default kerberos implementations within the domain or forest. Make note of the delta of authentication before and after upgrading the domain controller to windows server 2016 or newer.

The kdc uses the domain s active directory domain services database as its security account database. Using the same methods described above monitor the kerberos authentication after upgrading a domain controller and your first phase of windows hello for business deployments. Cve 2020 17049 is a remotely exploitable kerberos constrained delegation kcd security feature bypass security bug that exists in the way kdc determines if service tickets can be used for.

Kerberos authentication template the purpose of the kerberos authentication template is to issue certificates to domain controllers which present the certificates to client computers during user and computer network authentication. The tgt is encrypted signed delivered to the user as rep. Active directory security effectively begins with ensuring domain controllers dcs are configured securely.

The domain controller kdc checks user information logon restrictions group membership etc creates ticket granting ticket tgt. Only the kerberos service krbtgt in the domain can open and read tgt data. The krbtgt account is one that has been lurking in your active directory environment since it was first stood up.

The user presents the tgt to the dc when requesting a ticket. Start the kerberos key distribution center service and then set the startup setting to automatic. Every domain controller in an active directory domain runs a kdc kerberos distribution center service which handles all kerberos ticket requests.