매일 Windows 로그의 보안 섹션에 로그온 유형 8 (NetworkCleartext)과 함께 수천 개의 4625 로그온 실패 오류를 표시하는 Windows Server 2008 R2 시스템이 있습니다. 소스 네트워크 주소에 나열된 액세스 권한을 얻으려는 시스템의 IP 주소가 없으므로 너무 자주 실패하는 IP를 차단하기 위해 작성한 스크립트는 해당 IP를 찾을 수 없습니다.
이러한 로그인 시도는 어떤 서비스에서 나올 수 있습니까?
다음은 그 중 하나의 샘플입니다.
An account failed to log on.
Subject:
Security ID: SYSTEM
Account Name: server-name$
Account Domain: example
Logon ID: 0x3e7
Logon Type: 8
Account For Which Logon Failed:
Security ID: NULL SID
Account Name: Administrator
Account Domain:
Failure Information:
Failure Reason: Unknown user name or bad password.
Status: 0xc000006d
Sub Status: 0xc0000064
Process Information:
Caller Process ID: 0x4d0
Caller Process Name: C:\Windows\System32\svchost.exe
Network Information:
Workstation Name: system-name
Source Network Address: -
Source Port: -
Detailed Authentication Information:
Logon Process: Advapi
Authentication Package: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0
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.