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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Chapter 22. Advanced Network Management</title><link rel="stylesheet" href="samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.61.2"><link rel="home" href="index.html" title="Samba HOWTO Collection"><link rel="up" href="optional.html" title="Part III. Advanced Configuration"><link rel="previous" href="winbind.html" title="Chapter 21. Winbind: Use of Domain Accounts"><link rel="next" href="PolicyMgmt.html" title="Chapter 23. System and Account Policies"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 22. Advanced Network Management</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="winbind.html">Prev</a> </td><th width="60%" align="center">Part III. Advanced Configuration</th><td width="20%" align="right"> <a accesskey="n" href="PolicyMgmt.html">Next</a></td></tr></table><hr></div><div class="chapter" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="AdvancedNetworkManagement"></a>Chapter 22. Advanced Network Management</h2></div><div><div class="author"><h3 class="author"><span class="firstname">John</span> <span class="othername">H.</span> <span class="surname">Terpstra</span></h3><div class="affiliation"><span class="orgname">Samba Team<br></span><div class="address"><p><tt class="email"><<a href="mailto:jht@samba.org">jht@samba.org</a>></tt></p></div></div></div></div><div><p class="pubdate">April 3 2003</p></div></div><div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><a href="AdvancedNetworkManagement.html#id2956038">Features and Benefits</a></dt><dt><a href="AdvancedNetworkManagement.html#id2956069">Remote Server Administration</a></dt><dt><a href="AdvancedNetworkManagement.html#id2956212">Remote Desktop Management</a></dt><dd><dl><dt><a href="AdvancedNetworkManagement.html#id2956229">Remote Management from NoMachine.Com</a></dt></dl></dd><dt><a href="AdvancedNetworkManagement.html#id2956471">Network Logon Script Magic</a></dt><dd><dl><dt><a href="AdvancedNetworkManagement.html#id2956724">Adding Printers without User Intervention</a></dt></dl></dd></dl></div><p>
This section documents peripheral issues that are of great importance to network
administrators who want to improve network resource access control, to automate the user
environment and to make their lives a little easier.
</p><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2956038"></a>Features and Benefits</h2></div></div><div></div></div><p>
Often the difference between a working network environment and a well appreciated one can
best be measured by the <span class="emphasis"><em>little things</em></span> that make everything work more
harmoniously. A key part of every network environment solution is the
ability to remotely
manage MS Windows workstations, remotely access the Samba server, provide customized
logon scripts, as well as other housekeeping activities that help to sustain more reliable
network operations.
</p><p>
This chapter presents information on each of these areas. They are placed here, and not in
other chapters, for ease of reference.
</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2956069"></a>Remote Server Administration</h2></div></div><div></div></div><p>“<span class="quote"><span class="emphasis"><em>How do I get `User Manager' and `Server Manager'?</em></span></span>”</p><p>
<a class="indexterm" name="id2956089"></a>
<a class="indexterm" name="id2956098"></a>
<a class="indexterm" name="id2956106"></a>
Since I do not need to buy an <span class="application">NT4 Server</span>, how do I get the `User Manager for Domains'
and the `Server Manager'?
</p><p>
<a class="indexterm" name="id2956128"></a>
Microsoft distributes a version of these tools called <tt class="filename">Nexus.exe</tt> for installation
on <span class="application">Windows 9x/Me</span> systems. The tools set includes:
</p><div class="itemizedlist"><ul type="disc"><li>Server Manager</li><li>User Manager for Domains</li><li>Event Viewer</li></ul></div><p>
Download the archived file at <a href="ftp://ftp.microsoft.com/Softlib/MSLFILES/NEXUS.EXE" target="_top">ftp://ftp.microsoft.com/Softlib/MSLFILES/NEXUS.EXE.</a>
</p><p>
<a class="indexterm" name="id2956186"></a>
The <span class="application">Windows NT 4.0</span> version of the `User Manager for
Domains' and `Server Manager' are available from Microsoft <a href="ftp://ftp.microsoft.com/Softlib/MSLFILES/SRVTOOLS.EXE" target="_top">via ftp</a>.
</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2956212"></a>Remote Desktop Management</h2></div></div><div></div></div><p>
There are a number of possible remote desktop management solutions that range from free
through costly. Do not let that put you off. Sometimes the most costly solution is the
most cost effective. In any case, you will need to draw your own conclusions as to which
is the best tool in your network environment.
</p><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2956229"></a>Remote Management from NoMachine.Com</h3></div></div><div></div></div><p>
<a class="indexterm" name="id2956242"></a>
The following information was posted to the Samba mailing list at Apr 3 23:33:50 GMT 2003.
It is presented in slightly edited form (with author details omitted for privacy reasons).
The entire answer is reproduced below with some comments removed.
</p><p>“<span class="quote"><span class="emphasis"><em>
I have a wonderful Linux/Samba server running as pdc for a network. Now I would like to add remote
desktop capabilities so users outside could login to the system and get their desktop up from home or
another country.
</em></span></span>”</p><p>“<span class="quote"><span class="emphasis"><em>
Is there a way to accomplish this? Do I need a Windows Terminal Server? Do I need to configure it so
it is a member of the domain or a BDC,PDC? Are there any hacks for MS Windows XP to enable remote login
even if the computer is in a domain?
</em></span></span>”</p><p>
Answer provided: Check out the new offer of “<span class="quote"><span class="emphasis"><em>NX</em></span></span>” software from
<a href="http://www.nomachine.com/" target="_top">NoMachine</a>.
</p><p>
It implements an easy-to-use interface to the Remote X protocol as
well as incorporating VNC/RFB and rdesktop/RDP into it, but at a speed
performance much better than anything you may have ever seen.
</p><p>
Remote X is not new at all, but what they did achieve successfully is
a new way of compression and caching technologies that makes the thing
fast enough to run even over slow modem/ISDN connections.
</p><p>
I could test drive their (public) Red Hat machine in Italy, over a loaded
Internet connection, with enabled thumbnail previews in KDE konqueror
which popped up immediately on “<span class="quote"><span class="emphasis"><em>mouse-over</em></span></span>”. From inside that (remote X)
session I started a rdesktop session on another, a Windows XP machine.
To test the performance, I played Pinball. I am proud to announce
that my score was 631750 points at first try.
</p><p>
NX performs better on my local LAN than any of the other “<span class="quote"><span class="emphasis"><em>pure</em></span></span>”
connection methods I am using from time to time: TightVNC, rdesktop or
Remote X. It is even faster than a direct crosslink connection between
two nodes.
</p><p>
I even got sound playing from the Remote X app to my local boxes, and
had a working “<span class="quote"><span class="emphasis"><em>copy'n'paste</em></span></span>” from an NX window (running a KDE session
in Italy) to my Mozilla mailing agent. These guys are certainly doing
something right!
</p><p>
I recommend to test drive NX to anybody with a only a passing interest in remote computing
<a href="http://www.nomachine.com/testdrive.php" target="_top">http://www.nomachine.com/testdrive.php</a>.
</p><p>
Just download the free of charge client software (available for Red Hat,
SuSE, Debian and Windows) and be up and running within five minutes (they
need to send you your account data, though, because you are assigned
a real UNIX account on their testdrive.nomachine.com box.
</p><p>
They plan to get to the point were you can have NX application servers
running as a cluster of nodes, and users simply start an NX session locally,
and can select applications to run transparently (apps may even run on
another NX node, but pretend to be on the same as used for initial login,
because it displays in the same window. You also can run it
full-screen, and after a short time you forget that it is a remote session
at all).
</p><p>
Now the best thing for last: All the core compression and caching
technologies are released under the GPL and available as source code
to anybody who wants to build on it! These technologies are working,
albeit started from the command line only (and very inconvenient to
use in order to get a fully running remote X session up and running.)
</p><p>
To answer your questions:
</p><div class="itemizedlist"><ul type="disc"><li><p>
You do not need to install a terminal server; XP has RDP support built in.
</p></li><li><p>
NX is much cheaper than Citrix and comparable in performance, probably faster.
</p></li><li><p>
You do not need to hack XP it just works.
</p></li><li><p>
You log into the XP box from remote transparently (and I think there is no
need to change anything to get a connection, even if authentication is against a domain).
</p></li><li><p>
The NX core technologies are all Open Source and released under the GPL
you can now use a (very inconvenient) command-line at no cost,
but you can buy a comfortable (proprietary) NX GUI front end for money.
</p></li><li><p>
NoMachine are encouraging and offering help to OSS/Free Software implementations
for such a front end too, even if it means competition to them (they have written
to this effect even to the LTSP, KDE and GNOME developer mailing lists).
</p></li></ul></div></div></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2956471"></a>Network Logon Script Magic</h2></div></div><div></div></div><p>
There are several opportunities for creating a custom network startup configuration environment.
</p><div class="itemizedlist"><ul type="disc"><li>No Logon Script.</li><li>Simple universal Logon Script that applies to all users.</li><li>Use of a conditional Logon Script that applies per user or per group attributes.</li><li>Use of Samba's preexec and postexec functions on access to the NETLOGON share to create
a custom logon script and then execute it.</li><li>User of a tool such as KixStart.</li></ul></div><p>
The Samba source code tree includes two logon script generation/execution tools.
See <tt class="filename">examples</tt> directory <tt class="filename">genlogon</tt> and
<tt class="filename">ntlogon</tt> subdirectories.
</p><p>
The following listings are from the genlogon directory.
</p><p>
<a class="indexterm" name="id2956551"></a>
This is the <tt class="filename">genlogon.pl</tt> file:
</p><pre class="programlisting">
#!/usr/bin/perl
#
# genlogon.pl
#
# Perl script to generate user logon scripts on the fly, when users
# connect from a Windows client. This script should be called from
# smb.conf with the %U, %G and %L parameters. I.e:
#
# root preexec = genlogon.pl %U %G %L
#
# The script generated will perform
# the following:
#
# 1. Log the user connection to /var/log/samba/netlogon.log
# 2. Set the PC's time to the Linux server time (which is maintained
# daily to the National Institute of Standards Atomic clock on the
# internet.
# 3. Connect the user's home drive to H: (H for Home).
# 4. Connect common drives that everyone uses.
# 5. Connect group-specific drives for certain user groups.
# 6. Connect user-specific drives for certain users.
# 7. Connect network printers.
# Log client connection
#($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
open LOG, ">>/var/log/samba/netlogon.log";
print LOG "$mon/$mday/$year $hour:$min:$sec";
print LOG " - User $ARGV[0] logged into $ARGV[1]\n";
close LOG;
# Start generating logon script
open LOGON, ">/shared/netlogon/$ARGV[0].bat";
print LOGON "\@ECHO OFF\r\n";
# Connect shares just use by Software Development group
if ($ARGV[1] eq "SOFTDEV" || $ARGV[0] eq "softdev")
{
print LOGON "NET USE M: \\\\$ARGV[2]\\SOURCE\r\n";
}
# Connect shares just use by Technical Support staff
if ($ARGV[1] eq "SUPPORT" || $ARGV[0] eq "support")
{
print LOGON "NET USE S: \\\\$ARGV[2]\\SUPPORT\r\n";
}
# Connect shares just used by Administration staff
If ($ARGV[1] eq "ADMIN" || $ARGV[0] eq "admin")
{
print LOGON "NET USE L: \\\\$ARGV[2]\\ADMIN\r\n";
print LOGON "NET USE K: \\\\$ARGV[2]\\MKTING\r\n";
}
# Now connect Printers. We handle just two or three users a little
# differently, because they are the exceptions that have desktop
# printers on LPT1: - all other user's go to the LaserJet on the
# server.
if ($ARGV[0] eq 'jim'
|| $ARGV[0] eq 'yvonne')
{
print LOGON "NET USE LPT2: \\\\$ARGV[2]\\LJET3\r\n";
print LOGON "NET USE LPT3: \\\\$ARGV[2]\\FAXQ\r\n";
}
else
{
print LOGON "NET USE LPT1: \\\\$ARGV[2]\\LJET3\r\n";
print LOGON "NET USE LPT3: \\\\$ARGV[2]\\FAXQ\r\n";
}
# All done! Close the output file.
close LOGON;
</pre><p>
</p><p>
Those wishing to use more elaborate or capable logon processing system should check out these sites:
</p><div class="itemizedlist"><ul type="disc"><li><a href="http://www.craigelachie.org/rhacer/ntlogon" target="_top">http://www.craigelachie.org/rhacer/ntlogon</a></li><li><a href="http://www.kixtart.org" target="_top">http://www.kixtart.org</a></li></ul></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2956724"></a>Adding Printers without User Intervention</h3></div></div><div></div></div><p>
<a class="indexterm" name="id2956736"></a>
Printers may be added automatically during logon script processing through the use of:
</p><pre class="screen">
<tt class="prompt">C:\> </tt><b class="userinput"><tt>rundll32 printui.dll,PrintUIEntry /?</tt></b>
</pre><p>
See the documentation in the <a href="http://support.microsoft.com/default.asp?scid=kb;en-us;189105" target="_top">Microsoft knowledgebase article 189105.</a>
</p></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="winbind.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="optional.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="PolicyMgmt.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 21. Winbind: Use of Domain Accounts </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 23. System and Account Policies</td></tr></table></div></body></html>