Client Access License (CAL)

ID: Q151307

The information in this article applies to:

Microsoft Windows NT Advanced Server version 3.1
Microsoft Windows NT Server versions 3.5, 3.51
Microsoft File and Print Services for NetWare version 3.51

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

Additional query words: CAL


Keywords          : ntlicense NTSrvWkst 
Version           : 3.10 3.50 3.51
Platform          : WINDOWS 
Issue type        :

Last Reviewed: February 19, 1999