2003.12_Preview of the Next Issue.pdf

LINUX MAGAZINE

Next Month

January 2004: Issue 38

Next Month’s Highlights

Editor John Southern,

jsouthern@linux-magazine.com

Competence Competence Center Software:

Centers Patricia Jung, pjung@linux-magazine.com

Competence Center Hardware:

Mirko Dölle, mdoelle@linux-magazine.com

Competence Center Network & Security:

Achim Leitner, aleitner@linux-magazine.com

Corres- Jörg Anders, Elisabeth Bauer, Frederik Bijlsma,

pondents & Zack Brown,Helio Chissini de Castro,

Contributors Alison Davies, Steven Goodwin,

Arnt Ove Gregersen, Georg C. F. Greve,

Gottfried J. M. Grosshans, Roman Joost,

Heike Jurzik, Till Kamppeter, Charly Kühnast,

Yuwei Lin, Martin Loschwitz,

Arturo Fernandez Montoro, Andrea Müller,

Frank Neumann, Andreas Paland,

Michael Renner, Michael Schilli,

Volker Schmitt, Christian Schmitz

Marc André Selig, Rolf Strathewerd,

Stefanie Teufel, Ian Travis

Proofreading Ian Travis, William Helling

& Polishing

Layout Judith Erb, Elgin Grabe, Klaus Rehfeld

Cover Design Pinball Werbeagentur

Burn that DVD!

Next month’s exciting cover story is all

about making and burning your own

DVD discs. With the price of DVD

writable drives falling just in time for

Christmas, we are bringing you all the

information so you can burn your own

discs with confidence.

We take a look at the best tools under

Linux that let you compile and burn

DVDs with ease. These range from the

useful command line driven tools that let

power users make the most of the DVD

discs to the new graphical front-ends

that are child’s play to use, letting you

generate your own DVD compilations

with just a few mouse clicks.

The next issue will also feature an arti-

cle on how to use the newly affordable

DVD-RW discs as an addition to your

hard disk drive.

We also look at Video Disk Recording,

where you can replace your old VHS

tape recorder and change to a new intel-

ligent hard disk recording system.

Running as expected under Linux, this

digital technique has recently improved.

It allows you to instantly time shift your

viewing and includes editing and net-

workable features plus much more.

Advertising www.linux-magazine.com/Advertise

All countries Brian Osborn, ads@linux-magazine.com

(except phone +49 6509 910 495,

Germany, fax +49 6509 910 497

Austria, Switz.)

Germany Osmund Schmidt,

Austria anzeigen@linux-magazine.com

Switzerland phone +49 6335 9110, fax +49 6335 7779

Management (Vorstand)

Hermann Plank, hplank@linux-magazine.com,

Rosie Schuster, rschuster@linux-magazine.com

Business Unit Management

Brian Osborn, bosborn@linux-magazine.com

Product Management

Hans-Jörg Ehren,

hjehren@linux-magazine.com

GNU m4 Macro Processor

The GNU m4 is an implementation of the

traditional Unix macro processor. It is

mostly SVR4 compatible although it has

some extensions (for example, handling

more than 9 positional parameters to

macros). GNU m4 also has built-in func-

tions for including files, running shell

commands, doing arithmetic, etc.

GNU m4 is a macro processor in the

sense that it copies its input to the out-

put expanding macros as it goes. Macros

are either built-in or user-defined and

can take any number of arguments.

Besides just doing macro expansion, m4

has functions for including named files,

running UNIX commands, doing integer

arithmetic, manipulating text in various

ways, recursion etc… m4 can be used

either as a front-end to a compiler or as a

macro processor in its own right.

VPN Security

Virtual Private Networks rely on privacy.

If they are insecure, businesses could be

harmed or even fail. Giving all of your

data to unknown agent is not wise.

Even though we are using public net-

works such as the Internet, we have the

technology to lock down the security

and safeguard the information.

There are quite a number of Open

Source VPN applications around, but

how secure are they really? In practice

there’s a lot more to creating a secure

VPN than simply bolting some Blowfish

encryption and RSA key exchange onto a

network socket. We look at some com-

mon pitfalls that can occur when

creating VPN implementations, and the

recommendations for those wanting to

create VPN software or add VPN func-

tionality to an existing application.

Subscription www.linux-magazine.com/Subs

Subscription rate (12 issues including monthly DVD)

United Kingdom £ 49.90

Other Europe Euro 79.90

Outside Europe – SAL US $ 94.90

(combined air / surface mail transport)

Outside Europe – Airmail US $ 109.90

phone +49 89 9934 1167, fax +49 89 9934 1199,

subs@linux-magazine.com

Linux Magazine

Stefan-George-Ring 24

81929 Munich, Germany

info@linux-magazine.com,

phone +49 89 9934 1167, fax +49 89 9934 1199

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www.linux-magazine.co.uk – United Kingdom

While every care has been taken in the content of the

magazine, the publishers cannot be held responsible for the

accuracy of the information contained within it or any

consequences arising from the use of it. The use of the

CD provided with the magazine or any material provided

on it is at your own risk. The CD is thoroughly checked

for any viruses or errors before reproduction.

material may be reproduced in any form whatsoever in whole

or in part without the written permission of the publishers. It

is assumed that all correspondence sent, for example, letters,

e-mails, faxes, photographs, articles, drawings, are supplied

for publication or license to third parties on a non-exclusive

worldwide basis by Linux New Media unless otherwise stated

in writing.

Linux is a trademark of Linus Torvalds.

ISSN 14715678 Printed in Germany.

Linux Magazine is published monthly by Linux New Media

AG, Munich, Germany, and Linux New Media Ltd,

Manchester, England. Company registered in England.

Distributed by COMAG Specialist, Tavistock Road,

West Drayton, Middlesex, UB7 7QE, United Kingdom

On Sale: 5 December

December 2003

www.linux-magazine.com

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