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Q176501: Explanation of Windows 95 Netlogon Packets

Article: Q176501
Product(s): Windows for Workgroups and Windows NT Networking Issues
Version(s): WINDOWS:95
Operating System(s): 
Keyword(s): kbinterop kbnetwork win95
Last Modified: 17-DEC-2000

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The information in this article applies to:

- Microsoft Windows 95 
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SUMMARY
=======

Your Microsoft Windows 95 clients may send one or more of the following types of
Netlogon request packets:

- SAM LOGON Request from client

-or-

- LM1.0/2.0 LOGON Request from client

A single client may send one or both of the above packets during an attempt to
log on to the domain. This article discusses the difference between these
Netlogon request packets and the cause of the SAM LOGON request from client
packet.

MORE INFORMATION
================

SAM LOGON Request from Client
-----------------------------

When a Windows 95 computer is configured for User-Level access control in Network
Properties, it will send the SAM LOGON request from client packets to the domain
controllers or the Windows NT Server computer for which it is configured.
Mssp.vxd is sending these packets through the Windows 95 redirector to
\MAILSLOT\MSSP on the security provider.

This is pass-through authentication being done from the Windows 95 computer.
Windows 95 does not implement its own unique user-level security mechanism, so
it must use the services of an existing user-level security provider, in this
case a Windows NT domain controller or Windows NT Server computer, on the
network. The Windows 95 computer sends these packets during its boot sequence to
dynamically locate its security provider in preparation for future pass-through
authentication needs.


LM1.0/2.0 LOGON Request from Client
-----------------------------------

The LM1.0/2.0 LOGON request from client packets are the standard Windows NT logon
validation packets sent to \MAILSLOT\TEMP\NETLOGON on the domain controller
where the Windows 95 computer is configured to perform its network logon
request. This is controlled through the Client for Microsoft Networks properties
page on the Windows 95 computer.

Additional query words:

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Keywords          : kbinterop kbnetwork win95 
Technology        : kbWin95search kbZNotKeyword3
Version           : WINDOWS:95

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