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Q248652: Dial-Up Networking Cannot Connect to 56-Bit Windows 2000 Server

Article: Q248652
Product(s): Microsoft Windows NT
Version(s): winnt:4.0
Operating System(s): 
Keyword(s): kbnetwork kbWinNT400PreSP7Fix
Last Modified: 08-MAY-2002

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The information in this article applies to:

- Microsoft Windows NT Server version 4.0 
- Microsoft Windows NT Workstation version 4.0 
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SYMPTOMS
========

If you use Microsoft Internet Explorer or Windows NT 4.0, you may not be able to
connect to a Server Gated Cryptography (SGC) Server for strong encryption using
an IP Address or Alias.

Scenario:

You disable compression on your Windows NT 4.0-based computer, and then call to
negotiate 40-bit encryption with a server running Microsoft Windows 2000 Server
and accepts calls only with 40-bit and 56-bit encryption. After you dial the
server, you are disconnected.

RESOLUTION
==========

A supported fix is now available from Microsoft, but it is only intended to
correct the problem described in this article and should be applied only to
systems experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the
fix. For a complete list of Microsoft Product Support Services phone numbers and
information on support costs, please go to the following address on the World
Wide Web:

  http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are normally incurred for support calls may
be canceled, if a Microsoft Support Professional determines that a specific
update will resolve your problem. Normal support costs will apply to additional
support questions and issues that do not qualify for the specific update in
question.

The English-language version of this fix should have the following file
attributes or later:

  Date      Time                 Size    File name     Platform
  -------------------------------------------------------------
  01/11/2000 5:35 PM            17.7K    RASCCP.dll     Alpha
 
  01/11/2000 5:29 PM            10.2K    RASCCP.dll     i386



To work around this issue, enable Windows NT 4.0 compression.

STATUS
======

Microsoft has confirmed this to be a problem in Windows NT 4.0.

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

Cryptography defined:

The processes, art, and science of keeping messages and data secure. Cryptography
is used to enable and ensure confidentiality, data integrity, authentication
(entity and data origin), and nonrepudiation.

Server Gated Cryptography (SGC) technology, allows you to conduct 128-bit
transactions with banks and financial institutions that support SGC.

This problem was originally found in servers with Routing and Remote Access
Service (RRAS) Server and Virtual Private Network (VPN), but may exist on other
computers, as well.


Additional query words: negotiating encryption , compression with 128 bit

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Keywords          : kbnetwork kbWinNT400PreSP7Fix 
Component         : PPP
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : winnt:4.0
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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