5 Replies Latest reply on Oct 7, 2015 3:48 PM by zea62

    Thousands of Log On Failures from Solwarwinds Server


      On multiple servers we're seeing thousands of logon failures (Event ID 4625) 46coming from out Solarwinds server. Each server is hit every 10-20 minutes, and the account name is the name of the server with a '$' added to the end. Full log is below. We've checked the credentials in both NPM and SAM, and can't find these credentials saved anywhere. Any ideas as to what is trying to log in?


      An account failed to log on.



        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: SOLAR$

        Account Domain: INTERNALDOMAIN


      Failure Information:

        Failure Reason: Unknown user name or bad password.

        Status: 0xc000006d

        Sub Status: 0xc0000064


      Process Information:

        Caller Process ID: 0x0

        Caller Process Name: -


      Network Information:

        Workstation Name: SOLAR

        Source Network Address: (removed)

        Source Port: 54953 (different port for each error, from 49000-65316)


      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.