Our S160 is pointed to 2 Windows Server 2008 R2 Domain Controllers under edit relam > NTLM Authentication Realm. The appliance is joined to the domain here and enable transparent user id using AD Agent is also on and that agent is on a 3rd 2008 R2 member server. Client Signing is required.
Under test current settings, Ironport passes all tests.
On my both domain controllers I see an audit failure though under the security event logs
Log Name: Security
Source: Microsoft-Windows-Security-Auditing
Date: 12/21/2012 8:05:36 AM
Event ID: 4776
Task Category: Credential Validation
Level: Information
Keywords: Audit Failure
User: N/A
Computer: DCNAME.ourdomain.com
Description:
The computer attempted to validate the credentials for an account.
Authentication Package: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0
Logon Account: WEBFILTER$
Source Workstation: DCNAME
Error Code: 0xc0000199
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Security-Auditing" Guid="{54849625-5478-4994-A5BA-3E3B0328C30D}" />
<EventID>4776</EventID>
<Version>0</Version>
<Level>0</Level>
<Task>14336</Task>
<Opcode>0</Opcode>
<Keywords>0x8010000000000000</Keywords>
<TimeCreated SystemTime="2012-12-21T13:05:36.595097500Z" />
<EventRecordID>4668215</EventRecordID>
<Correlation />
<Execution ProcessID="468" ThreadID="1720" />
<Channel>Security</Channel>
<Computer>DCNAME.ourdomain.com</Computer>
<Security />
</System>
<EventData>
<Data Name="PackageName">MICROSOFT_AUTHENTICATION_PACKAGE_V1_0</Data>
<Data Name="TargetUserName">WEBFILTER$</Data>
<Data Name="Workstation">DCNAME</Data>
<Data Name="Status">0xc0000199</Data>
</EventData>
</Event>
Followed by:
Log Name: Security
Source: Microsoft-Windows-Security-Auditing
Date: 12/21/2012 8:05:37 AM
Event ID: 4625
Task Category: Logon
Level: Information
Keywords: Audit Failure
User: N/A
Computer: dcname.ourdomain.com
Description:
An account failed to log on.
Subject:
Security ID: SYSTEM
Account Name: DCNAME$
Account Domain: OURDOMAIN
Logon ID: 0x3e7
Logon Type: 3
Account For Which Logon Failed:
Security ID: NULL SID
Account Name: WEBFILTER$
Account Domain: OURDOMAIN
Failure Information:
Failure Reason: An Error occured during Logon.
Status: 0xc0000199
Sub Status: 0x0
Process Information:
Caller Process ID: 0x1ec
Caller Process Name: C:\Windows\System32\lsass.exe
Network Information:
Workstation Name: DCNAME
Source Network Address: 10.1.0.4
Source Port: 54830
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.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Security-Auditing" Guid="{54849625-5478-4994-A5BA-3E3B0328C30D}" />
<EventID>4625</EventID>
<Version>0</Version>
<Level>0</Level>
<Task>12544</Task>
<Opcode>0</Opcode>
<Keywords>0x8010000000000000</Keywords>
<TimeCreated SystemTime="2012-12-21T13:05:37.397392800Z" />
<EventRecordID>193248710</EventRecordID>
<Correlation />
<Execution ProcessID="492" ThreadID="1272" />
<Channel>Security</Channel>
<Computer>DCNAME.ourdomain.com</Computer>
<Security />
</System>
<EventData>
<Data Name="SubjectUserSid">S-1-5-18</Data>
<Data Name="SubjectUserName">DCNAME$</Data>
<Data Name="SubjectDomainName">OURDOMAIN</Data>
<Data Name="SubjectLogonId">0x3e7</Data>
<Data Name="TargetUserSid">S-1-0-0</Data>
<Data Name="TargetUserName">WEBFILTER$</Data>
<Data Name="TargetDomainName">OURDOMAIN</Data>
<Data Name="Status">0xc0000199</Data>
<Data Name="FailureReason">%%2304</Data>
<Data Name="SubStatus">0x0</Data>
<Data Name="LogonType">3</Data>
<Data Name="LogonProcessName">Advapi </Data>
<Data Name="AuthenticationPackageName">MICROSOFT_AUTHENTICATION_PACKAGE_V1_0</Data>
<Data Name="WorkstationName">DCNAME</Data>
<Data Name="TransmittedServices">-</Data>
<Data Name="LmPackageName">-</Data>
<Data Name="KeyLength">0</Data>
<Data Name="ProcessId">0x1ec</Data>
<Data Name="ProcessName">C:\Windows\System32\lsass.exe</Data>
<Data Name="IpAddress">10.1.0.4</Data>
<Data Name="IpPort">54830</Data>
</EventData>
</Event>
Is this something to be concerned about?
