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Using Samba
Using Samba
Using Samba
Robert Eckstein, David Collier-Brown, Peter Kelly
1st Edition November 1999
1-56592-449-5, Order Number: 4495
416 pages, $34.95
Table of Contents
Back to: Using Samba
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Using Samba
© 1999, O'Reilly & Associates, Inc.
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[Chapter 1] 1.1 Learning Samba
Using Samba
Robert Eckstein, David Collier-Brown, Peter Kelly
1st Edition November 1999
1-56592-449-5, Order Number: 4495
416 pages, $34.95
1. Learning the Samba
If you are a typical system administrator, then you know what it means to be swamped with
work. Your daily routine is filled with endless hardware incompatibility issues, system
outages, data backup problems, and a steady stream of angry users. So adding another
program to the mix of tools that you have to maintain may sound a bit perplexing. However,
if you're determined to reduce the complexity of your work environment, as well as the
workload of keeping it running smoothly, Samba may be the tool you've been waiting for.
A case in point: one of the authors of this book used to look after 70 Unix developers
sharing 5 Unix servers. His neighbor administered 20 Windows 3.1 users and 5 OS/2 and
Windows NT servers. To put it mildly, the Windows 3.1 administrator was swamped. When
he finally left -- and the domain controller melted -- Samba was brought to the rescue. Our
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[Chapter 1] 1.1 Learning Samba
author quickly replaced the Windows NT and OS/2 servers with Samba running on a Unix
server, and eventually bought PCs for most of the company developers. However, he did the
latter without hiring a new PC administrator; the administrator now manages one centralized
Unix application instead of fifty distributed PCs.
If you know you're facing a problem with your network and you're sure there is a better way,
we encourage you to start reading this book. Or, if you've heard about Samba and you want
to see what it can do for you, this is also the place to start. We'll get you started on the path
to understanding Samba and its potential. Before long, you can provide Unix services to all
your Windows machines -- all without spending tons of extra time or money. Sound
enticing? Great, then let's get started.
What is Samba?
Samba is a suite of Unix applications that speak the SMB (Server Message Block) protocol.
Many operating systems, including Windows and OS/2, use SMB to perform client-server
networking. By supporting this protocol, Samba allows Unix servers to get in on the action,
communicating with the same networking protocol as Microsoft Windows products. Thus, a
Samba-enabled Unix machine can masquerade as a server on your Microsoft network and
offer the following services:
l
Share one or more filesystems
l
Share printers installed on both the server and its clients
l
Assist clients with Network Neighborhood browsing
l
Authenticate clients logging onto a Windows domain
l
Provide or assist with WINS name server resolution
Samba is the brainchild of Andrew Tridgell, who currently heads the Samba development
team from his home of Canberra, Australia. The project was born in 1991 when Andrew
created a fileserver program for his local network that supported an odd DEC protocol from
Digital Pathworks. Although he didn't know it at the time, that protocol later turned out to be
SMB. A few years later, he expanded upon his custom-made SMB server and began
distributing it as a product on the Internet under the name SMB Server. However, Andrew
couldn't keep that name -- it already belonged to another company's product -- so he tried
the following Unix renaming approach:
grep -i 's.*m.*b' /usr/dict/words
And the response was:
salmonberry samba sawtimber scramble
Thus, the name "Samba" was born.
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[Chapter 1] 1.1 Learning Samba
Which is a good thing, because our marketing people highly doubt you would have picked
up a book called "Using Salmonberry"!
Today, the Samba suite revolves around a pair of Unix daemons that provide shared
resources -- or shares -- to SMB clients on the network. (Shares are sometimes called
s ervices as well.) These daemons are:
smbd
A daemon that allows file and printer sharing on an SMB network and provides
authentication and authorization for SMB clients.
nmbd
A daemon that looks after the Windows Internet Name Service (WINS), and assists
with browsing.
Samba is currently maintained and extended by a group of volunteers under the active
supervision of Andrew Tridgell. Like the Linux operating system, Samba is considered
Open Source software (OSS) by its authors, and is distributed under the GNU General
Public License (GPL). Since its inception, development of Samba has been sponsored in
part by the Australian National University, where Andrew Tridgell earned his Ph.D. [1] In
addition, some development has been sponsored by independent vendors such as Whistle
and SGI. It is a true testament to Samba that both commercial and non-commercial entities
are prepared to spend money to support an Open Source effort.
At the time of this printing, Andrew had completed his Ph.D. work and had
joined San Francisco-based LinuxCare.
Microsoft has also contributed materially by putting forward its definition of SMB and the
Internet-savvy Common Internet File System (CIFS), as a public Request for Comments
(RFC), a standards document. The CIFS protocol is Microsoft's renaming of future versions
of the SMB protocol that will be used in Windows products -- the two terms can be used
interchangeably in this book. Hence, you will often see the protocol written as "SMB/CIFS."
1.1 Learning Samba
Back to: Using Samba
© 1999, O'Reilly & Associates, Inc.
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