Hi all,
I've got a gateway server setup feeding two RDS servers (RDS1 and RDS2) and currently RDS2 is getting tonnes of 6425 errors from the gateway server (App01).
There are thousands of these being generated every day, all different ports, I used ProcMon to trace it back to the tssdis.exe program on App01.
Here's the event:
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: APP01
Account Domain:ROBINSON
Failure Information:
Failure Reason:Unknown user name or bad password.
Status: 0xC000006D
Sub Status: 0xC0000064
Process Information:
Caller Process ID:0x0
Caller Process Name:-
Network Information:
Workstation Name:APP01
Source Network Address:192.168.17.11
Source Port: 54185
Detailed Authentication Information:
Logon Process:NtLmSsp
Authentication Package:NTLM
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.
Any help would be greatly appreciated!