Event ID 4820 - A Kerberos Ticket-granting-ticket (TGT) was denied because the device does not meet the access control restrictions
|Sub category||Kerberos Authentication Service|
|Description||A Kerberos Ticket-granting-ticket (TGT) was denied because the device does not meet the access control restrictions|
When a Kerberos Ticket-granting-ticket is denied, event ID 4820 is logged.
This log data gives the following information:
|Account Information||Account Name
Supplied Realm Name
|Authentication Information||Silo Name
|Device Information||Device Name|
|Service Information||Service Name
|Network Information||Client Address
|Additional Information||Ticket Options
Ticket Encryption Type
|Certificate Information||Certificate Issuer Name
Certificate Serial Number
Why event ID 4820 needs to be monitored?
- Prevention of privilege abuse
- Detection of potential malicious activity
- Operational purposes like getting information on user activity like user attendance, peak logon times, etc.
- Compliance mandates
ADAudit Plus account logon real-time pre-configured reports help identify miscreant users attempting logon into machines that requires elevated privileges and provide evidence for any action administered by any user. These reports can be advantageously in overcoming account logon audit challenges.
Event 4820 applies to the following operating systems:
- Windows Server 2008 R2 and Windows 7
- Windows Server 2012 R2 and Windows 8.1
- Windows Server 2016 and Windows 10