I've been monitoring the security log on my Server 2008\SQL Enterprise 2008 server. I tend to get eh following error every few minutes or so - NOTE: Servername$ is the local DB server name plus a $
Log Name: Security
Date: 8/8/2011 12:15:01 PM
Event ID: 4625
Task Category: Logon
Keywords: Audit Failure
An account failed to log on.
Security ID: SYSTEM
Account Name: SERVERNAME$
Account Domain: DOMAIN
Logon ID: 0x3e7
Logon Type: 3
Account For Which Logon Failed:
Security ID: NULL SID
Failure Reason: An Error occured during Logon.
Sub Status: 0x0
Caller Process ID: 0x8b0
Caller Process Name: C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\Binn\sqlservr.exe
Workstation Name: BLUEWHALE
Source Network Address: -
Source Port: -
Detailed Authentication Information:
Logon Process: Authz
Authentication Package: Kerberos
Transited Services: -
Package Name (NTLM only): -
Key Length: 0
This event is generated when a logon request fails. It is generated on the computer where access was attempted.
The Subject fields indicate the account on the local system which requested the logon. This is most commonly a service such as the Server service, or a local process such as Winlogon.exe or Services.exe.
The Logon Type field indicates the kind of logon that was requested. The most common types are 2 (interactive) and 3 (network).
The Process Information fields indicate which account and process on the system requested the logon.
The Network Information fields indicate where a remote logon request originated. Workstation name is not always available and may be left blank in some cases.
The authentication information fields provide detailed information about this specific logon request.
- Transited services indicate which intermediate services have participated in this logon request.
- Package name indicates which sub-protocol was used among the NTLM protocols.
- Key length indicates the length of the generated session key. This will be 0 if no session key was requested.