So I just opened  3389 (for testing) and attempted to remote in from outside 
using  incorrect credentials, the event is still 4625, HOWEVER, it is not logon 
type 10 (as the previous entries are ) it was a type 3

So now I'm really confused as I was under the impression that type 10 was RDP,  
but clearly from my test RDP is TYPE 3



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:        administrator
    Account Domain:        X201

Failure Information:
    Failure Reason:        Unknown user name or bad password.
    Status:            0xc000006d
    Sub Status:        0xc000006a

Logon Type 10 – RemoteInteractive
When you access a computer through Terminal Services, Remote Desktop 
or Remote Assistance windows logs the logon attempt with logon type 10 
which makes it easy to distinguish true console logons from a remote 
desktop session.




  

Jean-Paul Natola

 


Date: Tue, 7 Apr 2015 12:52:24 -0400
Subject: RE: [NTSysADM] Remote logon attempts 4625
From: [email protected]
To: [email protected]

You might want.to validate.the.fw.rules.that only.port 80 is.open. also
Ed
On Apr 7, 2015 12:43 PM, "Kennedy, Jim" <[email protected]> wrote:








 
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Terminal 
Server\WinStations\RDP-Tcp
 
Check to see if it is set to answer on 80
 


From: [email protected] [mailto:[email protected]]
On Behalf Of J- P

Sent: Tuesday, April 7, 2015 12:37 PM

To: NT

Subject: [NTSysADM] Remote logon attempts 4625


 

Hi all,





Have an internet facing time-clock server , the network firewall has port 80 
ONLY forwarding to the server,



i'm starting to see hundreds of event 4625's coming from global IP addresses 
(China, Malaysia, russia etc,,)



If the firewall only has port 80 forwarded, how are they attempting RDP (Logon 
Type 10)





here is one such example;



An account failed to log on.



Subject:

    Security ID:        SYSTEM

    Account Name:       SERVER_Name$

    Account Domain:        DOMAIN_ NAME

    Logon ID:        0x3e7



Logon Type:            10



Account For Which Logon Failed:

    Security ID:        NULL SID

    Account Name:        administrator

    Account Domain:        SERVER_Name



Failure Information:

    Failure Reason:        Unknown user name or bad password.

    Status:            0xc000006d

    Sub Status:        0xc000006a



Process Information:

    Caller Process ID:    0x1424

    Caller Process Name:    C:\Windows\System32\winlogon.exe



Network Information:

    Workstation Name:    SERVER_Name

    Source Network Address:    60.52.25.18 (Malaysia IP )

    Source Port:        4750



Detailed Authentication Information:

    Logon Process:        User32 

    Authentication Package:    Negotiate

    Transited Services:    -

    Package Name (NTLM only):    -

    Key Length:        0





  

Jean-Paul Natola

 





                                          

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