Hi,
We have a websense appliance (V5000G2) running code version 7.8.1.
On our Windows Domain Controllers, I frequently see these two events:
Event 4776:
The computer attempted to validate the credentials for an account.
Authentication Package: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0
Logon Account: admin
Source Workstation: APPLIANCE-WSE
Error Code: 0xc0000234
followed by Event 4625:
An account failed to log on.
Subject:
Security ID: NULL SID
Account Name: -
Account Domain: -
Logon ID: 0x0
Logon Type: 3
Account For Which Logon Failed:
Security ID: NULL SID
Account Name: admin
Account Domain: zzz
Failure Information:
Failure Reason: Account locked out.
Status: 0xc0000234
Sub Status: 0x0
Process Information:
Caller Process ID: 0x0
Caller Process Name: -
Network Information:
Workstation Name: APPLIANCE-WSE
Source Network Address: xxx.xxx.xxx.120
Source Port: 33548
Detailed Authentication Information:
Logon Process: NtLmSsp
Authentication Package: NTLM
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.
The offending device is the V5000, but I have no idea where this 'admin' ID is configured on the appliance, or why it's contacting our DCs for authentication. I'd love to reconfigure it so it's not hammering AD with authentication noise... Can anyone help me out?
Thanks,
Greg