Windows AD Security Logs

Dear All,
We set our security log size to 190 MB but due to large number of events. Log can only cover 1 day events.
Is there a recommended size not compromising performance and can capture let say > 3 days of events.

Hi Jhunbanz,
You can increase the maximum log size or can change the overwrite setting by following below step :
Start --> Run --> EVENTVWR.MSC --> Right click Security log, go to Properties. Then, you can increase the Maximum log size. Though, you have
not mentioned about your windows server, so if you have windows server 2008 installed, you can choose “Achieve the log when full, do not overwrite events”.
If Windows Server 2003 is installed, you can choose “Overwrite events older that X days”.

Similar Messages

Unable to receive an email by task scheduler on audit failure in windows server 2008 r2 security log

Deal All,
I am sorry in advance if i would be on wrong forum, i have created a task on Server 2008 r2 Domain controller that when an audit failure event triggered in windows security log then an email should reach on my email ID, but unfortunately, nothing happen
on audit failure.i receive no email from task scheduler.
kindly suggest me to resolve the issue. I have created Email task on event ID 4771.
Thanks.
Zeeshan Ibrahim Network Administrator

Hi Zeeshan,
I have found a hotfix against the same error messages, though it applies to Windows Vista and Windows Server 2008, I am not sure if it will work on your machine.
Please refer to this KB article below:
Duplicate triggers are generated incorrectly in scheduled tasks in Windows Vista or in Windows Server 2008
http://support.microsoft.com/kb/2617046
Please feel free to let us know if this hotfix couldn’t help you fix this issue.
Best Regards,
Amy Wang

Windows 2008 member server, repeating event 4625 in the security log

Hello,
   I'm having an issue with a member server on our 2008 domain, security log is filling up with event 4625, here are the details:
Log Name:      Security
Source:        Microsoft-Windows-Security-Auditing
Date:          4/23/2014 2:04:42 PM
Event ID:      4625
Task Category: Logon
Level:         Information
Keywords:      Audit Failure
User:          N/A
Computer:      my.member.server
Description:
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:
Account Domain:
Failure Information:
Failure Reason:  Unknown user name or bad password.
Status:   0xc000006d
Sub Status:  0xc000006a
Process Information:
Caller Process ID: 0x0
Caller Process Name: -
Network Information:
Workstation Name: -
Source Network Address: 10.0.0.115
Source Port:  51366
Detailed Authentication Information:
Logon Process:  Kerberos
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.
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="2014-04-23T18:04:42.197Z" />
    <EventRecordID>99893119</EventRecordID>
    <Correlation />
    <Execution ProcessID="744" ThreadID="844" />
    <Channel>Security</Channel>
    <Computer>KLINEWEB.kline.local</Computer>
    <Security />
</System>
<EventData>
    <Data Name="SubjectUserSid">S-1-0-0</Data>
    <Data Name="SubjectUserName">-</Data>
    <Data Name="SubjectDomainName">-</Data>
    <Data Name="SubjectLogonId">0x0</Data>
    <Data Name="TargetUserSid">S-1-0-0</Data>
    <Data Name="TargetUserName">
    </Data>
    <Data Name="TargetDomainName">
    </Data>
    <Data Name="Status">0xc000006d</Data>
    <Data Name="FailureReason">%%2313</Data>
    <Data Name="SubStatus">0xc000006a</Data>
    <Data Name="LogonType">3</Data>
    <Data Name="LogonProcessName">Kerberos</Data>
    <Data Name="AuthenticationPackageName">Kerberos</Data>
    <Data Name="WorkstationName">-</Data>
    <Data Name="TransmittedServices">-</Data>
    <Data Name="LmPackageName">-</Data>
    <Data Name="KeyLength">0</Data>
    <Data Name="ProcessId">0x0</Data>
    <Data Name="ProcessName">-</Data>
    <Data Name="IpAddress">10.0.0.115</Data>
    <Data Name="IpPort">51366</Data>
</EventData>
</Event>
The IP address that appears in source network address all belong to VPN clients. And it looks like its only happening with 4-5 IPs, all of which are VPN clients. These clients shouldn't be connecting to anything on this server, which is why its puzzling.
Our DC is Windows 2008 and the VPN server is another member server on the domain. I suspect the issue is at the client PCs since there are many other VPN clients connected that don't generate the event ID.
Can anyone tell what the issue might be?
Thanks.

Hi Rayminette,
There are multiple login sources that could possibly be generating the errors:
FTP logins - check your FTP log to see if login failures are showing up at the same time.
Logins via Basic Authentication over http or https (simple, but possibly dangerous, way to password-protect a web site).
ASP scripts.
This logon type 8 indicates a network logon like logon type 3 but where the password was sent over the network in the clear text. Windows server doesn’t allow connection to shared file or printers with clear text authentication. The only situation
I’m aware of are logons from within an ASP script using the ADVAPI or when a user logs on to IIS using IIS’s basic authentication mode. In both cases the logon process in the event’s description will list advapi. Basic authentication is only dangerous
if it isn’t wrapped inside an SSL session (i.e. https). As far as logons generated by an ASP, script remember that embedding passwords in source code is a bad practice for maintenance purposes as well as the risk that someone malicious will view the source
code and thereby gain the password.
Reference from:
What is the source of thousands of 4625 Logon Failure errors with Logon Type 8 (NetworkCleartext)?
I hope this helps.

Excessive Logging in Windows Security Logs

Hi,
We are running a Windows Server 2012 server as a file server. We have 'Audit object access' turned-on in the Local Security Policy. We have a file share that is enabled for auditing. We are receiving numerous Event ID 5145, 5156, and 5456
in the Security event log. Often as many as 20 entries a second, and as a result our Security log is getting too large.

Hi,
You can unselect some useless auditing entry, such as “Traverse folder / execute file”, or limited the maximum size of the log.
The related article:
Auditing File Access on File Servers
https://blogs.technet.com/b/mspfe/archive/2013/08/27/auditing-file-access-on-file-servers.aspx
Hope this helps.
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

No Security Logging in Windows 2008R2

HI All!!!
My Company's Server 2008 R2 can not update the security log in the event viewer, after i clear the security log, it only has one information about the "Log clear" but still got nothing. I just Undo all the GPO setting but still no luck!! After that i go
to
Windows\System32\winevt\Logs and discovered the security.evtx only has 64kb, another event log file is working fine except security log. Any one got this problem before?? or any suggestion about that! Thanks a lot!!!

HI!!
Thanks for your help!! i just add the NTFS Permmission
Local Service and Network
Service to the Logs Folder, but can not restart the eventlog service, becasue some programs was related with this service. I will try tonight, and let you know how's going after i restart! THANKS A LOT!!!!
Johnson

System and security logs

1. Login, Clear Logs and log off events in Windows 2003 when does this happen and what are the IDs for
these events ? what is the system login?
2. In an event when administrator account and password are shared by more than one person, is it is possible
to prove who cleared the security logs?
3. If there is no keyboard monitoring is there a way to prove from which PC the delete came from?
4. Can a schedule a task be run in advance to delete the security logs at a later point of time in Window
2003 using utilities like WMI, powershell etc?
5. In Windows 2003 servers, Microsoft allows 2 remote connections and 1 console session also called session
0. What is session 0 ans when is this launched?
6. Can security and the system logs on the server be deleted remotely from any other server in
windows 2003 if the account has admin rights? Please comment if firewall setting needs to be enabled in window 2003.
dhomya

1.) If you enable auditing here are the events
https://technet.microsoft.com/en-us/library/cc787567%28v=ws.10%29.aspx?f=255&MSPPError=-2147217396
2.) Probably not unless you know who was at what console at what time.
3/4.)
http://blogs.msdn.com/b/ericfitz/archive/2007/08/10/help-someone-has-deleted-events-from-my-windows-event-log.aspx
5.) http://support.microsoft.com/kb/278845
6.) See 3/4
Regards, Dave Patrick ....
Microsoft Certified Professional
Microsoft MVP [Windows]
Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

WBEMTEST doesn't give Security logs

Hi,
I did a WMI test and queried to see the security logs. Nothing found. I see only Application and System logs. No security logs were found.
I used the below query.
select * from win32_ntlogevent
Thanks in advance.
Rajiv,
Technical Support Engineer.

On Windows Server 10 TP, I don't see the same behavior you describe...
Get-WmiObject -Query 'select * from win32_ntlogevent' | group -Property LogFile -NoElement
Count Name
1140 Security
    1 System
   24 Windows PowerShell
Hope this helps, Martin

Firefox will not open a new, secure log-in page, on my bank's site

My Bank's website opens a new, secure, log in page from a link on its home page. When I click on this link to do so, nothing happens. No window opens and Firefox does not give any messages as to why. It used to work, but has stopped in the last couple of months. I don't know if it something in my settings or not. I also use the Flock browser - which is based on the Mozilla code and the link works in this browser. Settings in both browsers appear to be the same.
== URL of affected sites ==
http://banksa.com.au

I get the login window in Firefox.
It uses javascript to open the window. Try hitting control-F5 - that will reload all the scripts in case one is corrupt in the cache.
Do you have any add-ons that might block scripts? Adblock Plus, No Script, ...
If so try disabling them.
Try safe mode
[[Safe Mode]]
Also see
[[Basic Troubleshooting]]

What caused the Windows 2008R2 Security event discarded

Dear Support team,
I have a windows 2008 R2 server, The security events didn't recorded from last year.
1. The maximum log size set to 100 MB, But the log file is 300 MB. The retention was set to "archive the log when full,do not overwrite events".
2. Below last entry security log show the registry key that i modified at that time. After i modify the registry value all of the security event were discarded
A registry value was modified.
Subject:
Security ID: domain\userid
Account Name: userid
Account Domain: domain
Logon ID: 0x2c202074
Object:
Object Name: \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\eventlog\Security
Object Value Name: Retention
Handle ID: 0x100
Operation Type: Existing registry value modified
Process Information:
Process ID: 0x129c
Process Name: C:\Windows\regedit.exe
Change Information:
Old Value Type: REG_DWORD
Old Value: 0
New Value Type: REG_DWORD
New Value: 4294967295
3. As i know,The Windows Event Log supersedes the Event Logging API beginning with the Windows Vista operating system. Here is the KB link: http://msdn.microsoft.com/en-us/library/windows/desktop/aa385780(v=vs.85).aspx?ppud=4
And the registry key which i modified at the before ( \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\eventlog\Security\retention ) Seems only apply to Event logging for Windows 2003 and prior system.
Here is the KB link: http://msdn.microsoft.com/en-us/library/windows/desktop/aa363648(v=vs.85).aspx
May i know what is the reason cause security event discarded ?
Does the retention setting at Registry still working at windows 2008?
Thanks very mush.
Randy

The new methods are via GPO described here.
http://technet.microsoft.com/en-us/library/cc722385(v=WS.10).aspx
http://blogs.technet.com/b/askds/archive/2008/08/12/event-logging-policy-settings-in-windows-server-2008-and-vista.aspx
Regards, Dave Patrick ....
Microsoft Certified Professional
Microsoft MVP [Windows]
Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

2012 DC getting numerous 5152 errors in Security log

I have a DC running Windows Server 2012 (not R2) which has recently started getting numerous failed audit entries in its security log, ID 5152.
The source IP seems to include about half a dozen in use by domain PCs (all Windows 7). The source and destination port varies depending on which PC generating the error, but they do not change with regards to each PC. For example, when source IP is 192.168.1.113,
the source and destination ports for all of the errors generated by that IP never change.
This is a real puzzle. I've seen external logon attempts in the past on other servers when port 3389 was open to the internet. But in those cases the same IP tried different logon names and different ports. In this case, there is no username, nor does the
error even have a place to display a username. It's just source and destination IP/Port, the protocol which is always 17.
Anyone seen anything like this? Any ideas on what might be going on? Let me know if more information is needed.
Jonathan

Make sure that viruses are not behind this behaviour.
Use Process Monitor to make diagnostics.
Regards
Milos
I know what Process Monitor is but have never used it so I have no idea how to use it for this issue.
Jonathan

Security Log entries on domain controllers

Hi Everyone,
I started working in an environment where they must log all security events due to regulations on one of the domains. It has 200 Windows XP and Windows 7 computers and about 200 users give or take. It has several servers including 2 Windows 2008 R2 domain
controllers.
The security log on domain controller 1 fills up to 400 MB after a week, archives the log, clears the log and starts all over again. The security log on the domain controller 2 reaches 400 MB every day and archives the entries, clears them and starts again.
Sometimes the domain controller 2 will reach 400 MB two or three times in a day.
The other sys admin tells me this issue just started three months ago and he can't determine why. Both servers only reached 400 MB once a week in the past. I've looked at the logs and don't see errors. There are a hundreds of thousands of logon\logoff events--ID
4634. It shows domain controller 1 constantly connecting to domain controller 2. This doesn't seem to be expected behavior for such a small domain? I'd appreciate any guidance on how to reduce the security entries without cutting back on logging.
Thanks,
Greg

Hi Greg,
Please post the exact event message for further troubleshooting.
In addition, please note that support for Windows XP ended on April 8, 2014, please upgrade Windows XP machines as soon as possible.
A notification about the end of Windows XP support
http://support.microsoft.com/kb/2934207
Best Regards,
Amy
Please remember to mark the replies as answers if they help and un-mark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected]

WRT600N Security Log

Is anyone else having this prob?
When I view my logs , my security log keeps saying incorect username-password=admin and gives my laptop pc address.
Starnge even though i can lod in with no probs with my password. I am hoping this is just a bug that will be fixed in the next patch.

It's a domain enviroment. Printers are all through a Print Server.
Below is the log of 1 such event.
Log Name: Security
Source: Microsoft-Windows-Security-Auditing
Date: 2014-04-04 03:04:24 PM
Event ID: 4634
Task Category: Logoff
Level: Information
Keywords: Audit Success
User: N/A
Computer: (computer name.domain)
Description:
An account was logged off.
Subject:
Security ID:
S-1-5-21-213254720-224688177-246369
Account Name:
(username)
Account Domain:
(domain)
Logon ID:
0x197EC67
Logon Type: 3
This event is generated when a logon session is destroyed. It may be positively correlated with a logon event using the Logon ID value. Logon IDs are only unique between reboots on the same computer.
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>4634</EventID>
<Version>0</Version>
<Level>0</Level>
<Task>12545</Task>
<Opcode>0</Opcode>
<Keywords>0x8020000000000000</Keywords>
<TimeCreated SystemTime="2014-04-04T13:04:24.783747600Z" />
<EventRecordID>108300</EventRecordID>
<Correlation />
<Execution ProcessID="724" ThreadID="756" />
<Channel>Security</Channel>
<Computer>(computer name.domain)</Computer>
<Security />
</System>
<EventData>
<Data Name="TargetUserSid">S-1-5-21-213254720-224688177-246369</Data>
<Data Name="TargetUserName">(username)</Data>
<Data Name="TargetDomainName">(domain)</Data>
<Data Name="TargetLogonId">0x197ec67</Data>
<Data Name="LogonType">3</Data>
</EventData>
</Event>

Security Logs

As local admin or domain admin that equipped the right to browse domain computer file remotely.
Is there any log can track or audit such access?

Hi,
Have you configured appropriate auditing policies to audit access on these files you want to monitor? Please make sure that you have configured SACL on these files.
If yes, you can find audit events in the Security log.
More information for you:
Understanding File and Handle Audit Events in Windows Vista, in Windows Server 2008, in Windows 7, Windows Server 2008 R2, in Windows 8, and in Windows Server 2012
http://support.microsoft.com/kb/2771404
Auditing File Access on File Servers
http://blogs.technet.com/b/mspfe/archive/2013/08/27/auditing-file-access-on-file-servers.aspx
Scenario: File Access Auditing
http://technet.microsoft.com/en-us/library/hh831476.aspx
Best Regards,
Amy

Security logs not overwrite

Hi
I have windows server 2012
I configure the security log with size 4 GB and override but I find that after the log file reach 4 GB they archive it and create another one although I configured to overwrite not archive .
what shall the reason ?
I really confused .
MCP MCSA MCSE MCT MCTS CCNA

The 'r' parameter specifies whether to retain the log and the 'ab' parameter specifies whether to automatically back up the log. The following list shows the parameter values of the Wevtutil command-line tool that correspond to each of the above retention policies.
Overwrite events as needed: r = false, ab = false
Archive the log when full, do not overwrite events: r = true, ab = true
Do not overwrite events. (Clear logs manually.): r = true, ab = false
REF: https://technet.microsoft.com/en-us/library/cc721981.aspx?f=255&MSPPError=-2147217396
This post is provided AS IS with no warranties or guarantees, and confers no rights.
~~~
Questo post non fornisce garanzie e non conferisce diritti
Hello
in the below u can see
C:\Users\bkupofc>wevtutil gl Security
name: Security
enabled: true
type: Admin
owningPublisher:
isolation: Custom
channelAccess: O:BAG:SYD:(A;;CCLCSDRCWDWO;;;SY)(A;;CCLC;;;BA)(A;;CC;;;ER)(A;;CC;
;;NS)
logging:
logFileName: %SystemRoot%\System32\Winevt\Logs\Security.evtx
retention: false
autoBackup: false
maxSize: 4429185024
publishing:
fileMax: 1
C:\Users\bkupofc>
and still the logs not overwritten , please advice .
MCP MCSA MCSE MCT MCTS CCNA

Security log 4634 shows another user logging off

Security log shows users logoff that weren't even using the machine. There are no 4642 logon logs, just the 4643 logoff logs.
These user aren't even accessing another machine via the network. All machines also have no malware or virus on them.
Logon Type: 3
This event is generated when a logon session is destroyed. It may be positively correlated with a logon event using the Logon ID value. Logon IDs are only unique between reboots on the same computer.
What could be causing this?

It's a domain enviroment. Printers are all through a Print Server.
Below is the log of 1 such event.
Log Name: Security
Source: Microsoft-Windows-Security-Auditing
Date: 2014-04-04 03:04:24 PM
Event ID: 4634
Task Category: Logoff
Level: Information
Keywords: Audit Success
User: N/A
Computer: (computer name.domain)
Description:
An account was logged off.
Subject:
Security ID:
S-1-5-21-213254720-224688177-246369
Account Name:
(username)
Account Domain:
(domain)
Logon ID:
0x197EC67
Logon Type: 3
This event is generated when a logon session is destroyed. It may be positively correlated with a logon event using the Logon ID value. Logon IDs are only unique between reboots on the same computer.
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>4634</EventID>
<Version>0</Version>
<Level>0</Level>
<Task>12545</Task>
<Opcode>0</Opcode>
<Keywords>0x8020000000000000</Keywords>
<TimeCreated SystemTime="2014-04-04T13:04:24.783747600Z" />
<EventRecordID>108300</EventRecordID>
<Correlation />
<Execution ProcessID="724" ThreadID="756" />
<Channel>Security</Channel>
<Computer>(computer name.domain)</Computer>
<Security />
</System>
<EventData>
<Data Name="TargetUserSid">S-1-5-21-213254720-224688177-246369</Data>
<Data Name="TargetUserName">(username)</Data>
<Data Name="TargetDomainName">(domain)</Data>
<Data Name="TargetLogonId">0x197ec67</Data>
<Data Name="LogonType">3</Data>
</EventData>
</Event>

Windows AD Security Logs

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