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Static Name Resolution
You should know that in addition to the dynamic name services provided
by network name servers, there's a static way for each PC to resolve a
network name into a network address. Each PC can have a HOSTS table on
its hard drive for resolving hostnames to IP addresses. The HOSTS
table is used for normal TCP/IP networking (as in Telnet sessions to a
host system as well as pings). Each PC can also have an LMHOSTS file,
which is formatted much the same as a HOSTS file but used for NetBIOS
name resolution. Both files have a series of lines that look something
like this:
192.168.10.5 fido
192.168.10.5 rover
This means that 192.168.10.5 is the numeric address for fido, and
192.168.10.6 is the numeric address for rover. (LMHOSTS also has some
additional format options to indicate NetBIOS functions such as
workgroups.)
Both of these files live in the C:\WINDOWS directory. LMHOSTS.SAM is a
sample file you can look at to see the file format and so on. Let me
beg of you not to use LMHOSTS files (or HOSTS files) unless you have
the smallest network in the world; the tedium of updating many of
these files makes you wish you were running after really tough network
problems instead. You can consider static host mappings as
functionally obsolete, but you should know about it. Just in case
there's a naming problem with a workstation, you might want to see if
somebody has been monkeying around with LMHOSTS at a given client
computer.
Workstation Configuration
Now that I've examined the makeup of the Microsoft file and print
superhighway, let's take a look at the roads that connect to it. In
particular, let's look at the method of configuring a given Windows
workstation, as well as at the given protocols and clients that can be
configured on a Windows workstation.
The Network Control Panel
Take a look at the Windows 9x Network Control Panel in Figure 11.3
(see the following section). It shows a high-level picture of the
network components configured on that PC. The Windows NT Network
Control Panel looks and feels a little bit different, but it ties all
your network components together and allows you to manage them and
check their configuration from one place. The components include the
following:
o Clients-These components enable your PC to use a service over a
network.
o Network adapters-These components and protocols do the
setup necessary for you to communicate on the network.
o Protocols
o Services-As discussed in Hour 1, services are programs that
offer information or resources to the network.
I'll treat these components separately in the following sections.
We'll start off by discussing clients and then move on to binding, the
process of letting your workstation know which network components are
hooked to one another.
Clients
To talk to any other computer, whether it's another Windows PC or that
beefy server in the data center, you always need a client. Most times,
a client is simply a program that allows Windows to treat server or
workgroup resources as though they resided on the local workstation.
This is usually accomplished through file and print redirection-that
is, your G: drive is actually a server drive or your friend Eddie's
CD-ROM drive, LPT3 is actually the printer connected to Gloria's
printer, and so on. (I get deep into client and generic file and print
troubleshooting in Hour 18, "Lots of Different People in Your
Neighborhood.")
In order for you to perform drive and printer redirection, you must
add driver software to Windows. You add this software by going to your
Control Panel and selecting Network, which gives you the dialog box
shown in Figure 11.3. Because the Control Panel shows that I have the
client for Microsoft Networks and the Novell IntranetWare client
loaded, I should be able to talk to both Microsoft and Novell
networks. Cool.
[11-03t.jpg]
Figure 11.3 The Network Control Panel, where most Windows networking
functions are configured, including network cards, protocols, and
clients for file and print networking.
Of course, different folks have different strokes, so your different
types of servers need different types of clients. Some common ones
include the following:
o Banyan DOS/Windows client
o Client for Microsoft Networks
o Novell IntraNetware client
o Various third-party UNIX (NFS, or Network File System)
clients
______________________________________________________________
Even though Windows ships with many different manufacturers'
clients, the versions of these clients on the Windows installation
CD-ROM are usually older and possibly buggier than versions you can
obtain directly from the manufacturers themselves. You're always
best off getting software straight from the horse's mouth.
______________________________________________________________
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