Client Access License (CAL)

ID: Q151307

The information in this article applies to:
  • Microsoft Windows NT Advanced Server
  • Microsoft Windows NT Server versions 3.5, 3.51
  • Microsoft File and Print Services for NetWare version 3.51
  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server

SUMMARY

This article describes issues related to client access license.


MORE INFORMATION

There are two different licensing models that customers can choose, either a per server or per seat. The per server licensing (concurrent licensing) will cause Windows NT to implement a concurrency check to only allow the number of concurrent file/print users as configured in license manager. Per seat licensing does not implement the license manager check, though the customer must still purchase a client access license (CAL) for such clients.

The following uses require a CAL:

  • Server Message Block (SMB) file & print (Windows NT Server)


  • NCP file & print (FPNW)


  • Remote Access Service (RAS)


  • Services for Macintosh (SFM)


Examples of SMB connections are: connecting to a Windows NT server file share or printer share through Windows for Workgroups 3.11, a Microsoft Network client, a LAN manager client, or a Windows 95 client. A NetWare client access FPNW requires a separate CAL.

The following applications *do not* require a CAL:
  • http


  • gopher


  • ftp


Additional query words: CAL

Keywords : ntlicense NTSrvWkst
Version : :; WINDOWS:2000; winnt:3.5,3.51
Platform : WINDOWS winnt
Issue type :


Last Reviewed: January 21, 2000
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