Re: Security error, EventID 529

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Thanks for the response, Brandy.

I went through all of your steps, and after rebooting the last time, I was
still getting the same error.
Any further help would be appreciated.

Jason


""Brandy Nee [MSFT]"" <v-branee@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:MO0IKZoPGHA.5536@xxxxxxxxxxxxxxxxxxxxxxxx
Hello Jason,

Thank you for posting to the SBS Newsgroup.

I understand that you got many Event ID 529 on your SBS 2K3 Server. If I
have misunderstood your concern, please let me know.

Based on my experience, this kind of issue may be caused by Application
logon such as while Outlook is connecting to Exchange Server, or this is
an
automated dictionary attack on weak passwords. The hacker is trying
variable username/password (here it is webmaster) combinations to access
the network. The attack can be initiated from internal network or external
network.

In the event log you included, I noticed that the logon type is 3, which
means Network logon. The "Authentication Package:
MICROSOFT_AUTHENTICATION_PACKAGE_V1_0" is the default authentication
package; Advapi means ''API call to LogonUser''. Based on these event
attributes, it is most likely that the hacker is attempting to logon the
Exchange services such as OWA or SMTP.

You can check to see which process handles the session. For example, in
this event, the Caller Process ID is 6936. Write down the process ID, go
to
problematic computer where user account jsantos is logon from, press
Ctrl+Alt+Del and click ''Task Manager''. In the task manager window, click
''Processes'' tab. Click ''View''-->''Select Columns''. Check ''PID
(Process Identifier)'' and click ''OK''. In the process list, find the
process with 6936 PID. What's the process?

I also suggest that you perform a clean boot on the problematic computer:

a. Click Start->Run, type "MSCONFIG" (without the quotation marks) and
click OK.

b. In the System Configuration Utility (MSConfig) window, click the
"Startup" tab.

c. Click to clear all the check marks from the list box under "Startup".

d. Click the Services tab, check the "Hide all Microsoft Services" box and
then click the "Disable All" button to disable the non-Microsoft services.

e. Click OK to close the MSConfig window. Click Yes when you are asked to
restart your computer in order to enable the changes.

f. After restarting, please check whether this issue still exists.

Technically speaking, we cannot prevent a hacker attacking your server. We
can ignore the events as the attack was unsuccessful. However, since it
indicates the hacker attacking, I strongly suggest that we perform
following steps to improve the network security:

1. Scan virus on the computers. Please use the anti-virus software to
perform full scan on the internal computers. There is an online virus scan
link below:

http://housecall.trendmicro.com/

2. Implement Strong password policies. Open ''Server Management console'',
navigate to Users snap-in. In the right panel, click ''Configure Password
Policies''. Enable the password policies. You'd better also ask your users
to change their passwords to avoid successfully attack against weak
password.

For more information:

Account Passwords and Policies
http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/
security/bpactlck.mspx

3. Monitor the internal users to see if anyone is testing the admin
accounts.

4. Please have a look at following White Paper to secure your SBS Network.

Securing Your Windows Small Business Server 2003 Network
http://www.microsoft.com/downloads/details.aspx?FamilyID=f62b2722-267c-4642-
b287-c31115ef10a4&DisplayLang=en

Please take your time to read through my suggestions and perform the
steps.
If you have any updates, please feel free to let me know. I am looking
forward to hearing from you!

Best regards,

Brandy Nee

Microsoft CSS Online Newsgroup Support

Get Secure! - www.microsoft.com/security
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--------------------
From: "jason" <jasonsantos-NOSPAM-@xxxxxxxxxxxxxxxxxxxx>
Subject: Security error, EventID 529
Date: Thu, 2 Mar 2006 13:53:27 -0500
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Using SBS2003 SP1 and XP Pro.

I've been getting over 100 errors a day regarding an EventID 529:

Logon Failure:
Reason: Unknown user name or bad password
User Name: jsantos
Domain:
Logon Type: 3
Logon Process: Advapi
Authentication Package: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0
Workstation Name: SBSSERVER
Caller User Name: SBSSERVER$
Caller Domain: WORKPLACE
Caller Logon ID: (0x0,0x3E7)
Caller Process ID: 6936
Transited Services: -
Source Network Address: -
Source Port: -


I can't figure out how to stop this. The username it's referring to is
mine,
but I can login to any workstation just fine.

Any ideas?

Thanks.
Jason






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