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Thread: Lots of 529 failed logon attempts

Lots of 529 failed logon attempts
yaro137[ at ]googlemail.com 12/22/2008 11:45:45 AM
I found them on a TS in security log. There are lots of them.
I wouldn't suspect the users forgetting their passwords so
often. Coming from different processes which I can't see in
Task Manager. Also different ports. They all have the same
caller ID. Any idea what can be causing them?
yaro

Logon Failure:
Reason: Unknown user name or bad password
User Name: Martin
Domain: DOMAIN
Logon Type: 7
Logon Process: User32
Authentication Package: Negotiate
Workstation Name: TS
Caller User Name: TS$
Caller Domain: DOMAIN
Caller Logon ID: (0x0,0x3E7)
Caller Process ID: 5532
Transited Services: -
Source Network Address: 192.168.26.102
Source Port: 1565


Logon Failure:
Reason: Unknown user name or bad password
User Name: Davidm
Domain: DOMAIN
Logon Type: 10
Logon Process: User32
Authentication Package: Negotiate
Workstation Name: TS
Caller User Name: TS$
Caller Domain: DOMAIN
Caller Logon ID: (0x0,0x3E7)
Caller Process ID: 6132
Transited Services: -
Source Network Address: 192.168.26.103
Source Port: 1047


Logon Failure:
Reason: Unknown user name or bad password
User Name: clayt
Domain: DOMAIN
Logon Type: 7
Logon Process: User32
Authentication Package: Negotiate
Workstation Name: TS
Caller User Name: TS$
Caller Domain: DOMAIN
Caller Logon ID: (0x0,0x3E7)
Caller Process ID: 2412
Transited Services: -
Source Network Address: 192.168.36.11
Source Port: 1042


Re: Lots of 529 failed logon attempts
Meinolf Weber [MVP-DS] <meiweb(nospam)[ at ]gmx.de> 12/22/2008 11:56:45 AM
Hello yaro,

If you check the logon type 7, it is screnn saver unlock and 10 is RDC:
http://www.windowsecurity.com/articles/Logon-Types.html

Are the user accounts exisiting, that are logged? Did you talk to the users
about this?

Best regards

Meinolf Weber
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[Quoted Text]
> I found them on a TS in security log. There are lots of them.
> I wouldn't suspect the users forgetting their passwords so
> often. Coming from different processes which I can't see in
> Task Manager. Also different ports. They all have the same
> caller ID. Any idea what can be causing them?
> yaro
> Logon Failure:
> Reason: Unknown user name or bad password
> User Name: Martin
> Domain: DOMAIN
> Logon Type: 7
> Logon Process: User32
> Authentication Package: Negotiate
> Workstation Name: TS
> Caller User Name: TS$
> Caller Domain: DOMAIN
> Caller Logon ID: (0x0,0x3E7)
> Caller Process ID: 5532
> Transited Services: -
> Source Network Address: 192.168.26.102
> Source Port: 1565
> Logon Failure:
> Reason: Unknown user name or bad password
> User Name: Davidm
> Domain: DOMAIN
> Logon Type: 10
> Logon Process: User32
> Authentication Package: Negotiate
> Workstation Name: TS
> Caller User Name: TS$
> Caller Domain: DOMAIN
> Caller Logon ID: (0x0,0x3E7)
> Caller Process ID: 6132
> Transited Services: -
> Source Network Address: 192.168.26.103
> Source Port: 1047
> Logon Failure:
> Reason: Unknown user name or bad password
> User Name: clayt
> Domain: DOMAIN
> Logon Type: 7
> Logon Process: User32
> Authentication Package: Negotiate
> Workstation Name: TS
> Caller User Name: TS$
> Caller Domain: DOMAIN
> Caller Logon ID: (0x0,0x3E7)
> Caller Process ID: 2412
> Transited Services: -
> Source Network Address: 192.168.36.11
> Source Port: 1042

Re: Lots of 529 failed logon attempts
yaro137[ at ]googlemail.com 12/22/2008 12:47:54 PM
All from valid accounts and the users didn't notice any problems while
logging in.
Thanks
yaro

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