Schannel.dll and Schnl128.dll Updates in Windows NT 4.0 SP4

ID: Q185618


The information in this article applies to:
  • Microsoft Internet Information Server version 4.0


SUMMARY

The new Schannel.dll and Schnl128.dll files in Windows NT 4.0 Service Pack 4 have been modified to address the issues listed below.


MORE INFORMATION

The changes made to the above listed files include:

  • Cache access has been unserialized to improve performance on the server side.


  • The cache automatically grows itself, for improved memory usage. (the server had been blocking connections under heavy load).


  • DES, 3DES, and DHE ciphers have been added (for compatibility with other implementations).


  • Fortezza has been added (a government cipher).


  • New APIs were added to the SSPI interface.


  • RPC fixes were made. Some bugs were fixed, allowing connection mode usage of schannel.


To obtain the latest service pack for Windows NT version 4.0, please see the following article in the Microsoft Knowledge Base.
Q152734 : How to Obtain the Latest Windows NT 4.0 Service Pack

Keywords : NT4SP4Fea
Version : WINNT:4.0
Platform : winnt
Issue type : kbinfo


Last Reviewed: April 29, 1999
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