Hi guys,
I'm checking out Exchange 2010 server on a regular basis about 4625 Event ID in the Security Logs for user which forgot to update their passwords or typed it wrong and so far it was ok. Last week I found the event without a user account or any other information
inside. For example:
An account failed to log on.
Subject:
Security ID:
SYSTEM
Account Name:
EXC2010$
Account Domain:
Domain
Logon ID:
0x3e7
Logon Type:
3
Account For Which Logon Failed:
Security ID:
NULL SID
Account Name:
Account Domain:
Failure Information:
Failure Reason:
Account currently disabled.
Status:
0xc000006e
Sub Status:
0xc0000072
Process Information:
Caller Process ID:
0x1760
Caller Process Name:
C:\Windows\System32\inetsrv\w3wp.exe
Network Information:
Workstation Name:
EXC2010
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.
Usually there is at least the IP address or the account name. Is there any way to find out which is the source of this request in order to take actions.
Thanks in advance