Product Reviews

The Next Wave of Integration

Microsoft’s Services for Unix ties two OS combatants together.

Microsoft has changed—at least a bit. It used to be knocked for its “closed” architecture due to technologies like WINS, NTLM and the SAM, to name just three. Now, Microsoft is more standards-based with DNS, Kerberos and LDAP-derived Active Directory replacing the aforementioned technologies. This is great news. Open standards promote interoperability, and the more interoperable Windows is, the more it gets installed.

Adding greatly to Windows’ interoperability is Microsoft Services for Unix 3.5 (SFU). Here are the areas of increased compatibility SFU offers:

 NFS Client. NFS is the Unix way of sharing files. You can make Windows easily open NFS “shares” (properly called Mounts).

 NFS Server. You can fool Unix clients into thinking your Windows server is actually a Unix NFS server.

 NFS Gateway. You can have a Windows server take NFS mounts and have them appear as if they were just regular Windows shares. This eliminates the need to have an NFS client loaded on Windows machines.

 Telnet Server. The telnet server in Windows 2000 Server is a generation older than its Windows Server 2003 counterpart. You can load SFU 3.5’s telnet server on a Win2K system to have comparable functionality. This component isn’t installable on Windows 2003, since it’s already built-in and up to date.

 NIS Server. NIS is the Unix way to handle centralized account management. You can fool Unix clients into thinking your Windows server is actually an NIS server.

 Password Synchronization. You can synchronize a user’s password between AD and an existing Unix NIS server. Note, however, that in order to perform this little piece of magic, the AD schema must be updated. This could be a tough pill to swallow for some organizations.

 Unix Utilities. You can make Windows think it’s got a whole battery of common Unix utilities, everything from command shells such as C SHELL and Korn shell to command-line tools, such as cron, ls and grep. SFU is full of utilities that make working on Windows easier for a Unix admin.

 Interix and Interix SDK. If you already have source code for home-grown Unix applications, you can use the included compilers such as yacc or cc to recompile those applications to run under Interix (a POSIX-compliant subsystem.) Once they’re running under Windows, the idea is that you can stop running it on your expensive Unix box. It also contains the XllR5 and XllR6 libraries, but not the actual X11 server components, which means you can develop X Windows applications under Windows, but you either need a third-party X11 implementation for Windows or must run your X Windows applications on another platform.

Microsoft considers this a “point revision” over SFU 3.0, but it’s actually quite an overhaul. The most major change is the price. SFU 3.0 cost $100. SFU 3.5 is free for the asking. You can click and either download it or have a CD sent to you for a nominal $6.99 shipping fee.

You can install SFU 3.5 on Windows 2003, Windows XP Professional or Win2K. The NIS server component, however, won’t load on the Pro versions of Windows (servers only). If you want to perform password synchronization, then—before the installation begins—be sure to log in as a user who is both in the Enterprise Admins and Schema Admins group, or the installation of that component will fail and you’ll have to start all over again. This really should be fixed in the SFU 3.5 setup routine.

SFU 3.5 will talk with almost any Unix variety, but Microsoft specifically tested SFU with Red Hat Linux 8.0, Solaris 2.7, HP-UX 11i and AIX 5L5.2. And there’s nothing you have to install on the Unix side to make SFU 3.5 work.

Microsoft Services for Unix
The SFU Admin console includes a new NFS Sharing tab on the Properties page of a standard directory. (Click image to view larger version.)

Once installed, the Unix savvy will likely start playing with the UNIX command-line tools. For instance, typing “c:\sfu\bin\cal 2004” at a command prompt is a fun way to get a little yearly calendar to display. The Admin console may be your next step. Here, you can configure how Windows can pretend to be both an NIS and NFS server. If you plan to use this machine to access Unix NFS mounts, you can manipulate how that client piece should react.

SFU 3.5 can’t be beat. It’s a solid integration tool and it works as advertised. At a total cost of $0, the price can’t be beat either. It could take you some time to truly get integrated, but in the end, it’s worth it.

About the Author

Jeremy Moskowitz, Group Policy MVP is founder of and PolicyPak Software. Since becoming one of the world's first MCSEs, he has performed Active Directory, and Group Policy planning and implementations for some of the nation's largest organizations. His latest (upcoming) book is "Group Policy Fundamentals, Security, and Troubleshooting, third edition" which will have new content for Windows 10. Learn more about the book and Jeremy's Group Policy Master Class training was ranked as one of "The 20 most useful Microsoft sites for IT professionals" by ComputerWorld magazine. Learn more about how to secure application settings, report on Group Policy Compliance and deploy all Group Policy settings thru the cloud at


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