Table Of Content377_Eth2e_FM.qxd 11/14/06 1:23 PM Page i
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Jay Beale's Open Source Security Series
Wireshark
&
Ethereal
Network Protocol
Analyzer Toolkit
Angela Orebaugh
Gilbert Ramirez OOppeenn SSoouurrccee
Josh Burke
Larry Pesce
Joshua Wright SSeeccuurriittyy TToooollss
Greg Morris && SSccrriippttss
377_Eth2e_FM.qxd 11/14/06 1:23 PM Page iv
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PUBLISHED BY
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Wireshark & Ethereal Network Protocol Analyzer Toolkit
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Acknowledgments
Syngress would like to acknowledge the following people for their kindness
and support in making this book possible.
A special thank you to Mike Rash and Deapesh Misra for contributing their
expertise to the case studies used in Chapter 7 of this book.
Syngress books are now distributed in the United States and Canada by
O’Reilly Media,Inc.The enthusiasm and work ethic at O’Reilly are incredible,
and we would like to thank everyone there for their time and efforts to bring
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Hart,Sara Winge,Peter Pardo,Leslie Crandell,Regina Aggio Wilkinson,Pascal
Honscher,Preston Paull,Susan Thompson,Bruce Stewart,Laura Schmier,Sue
Willing,Mark Jacobsen,Betsy Waliszewski,Kathryn Barrett,John Chodacki,
Rob Bullington,Kerry Beck,Karen Montgomery,and Patrick Dirden.
The incredibly hardworking team at Elsevier Science,including Jonathan
Bunkell,Ian Seager,Duncan Enright,David Burton,Rosanna Ramacciotti,
Robert Fairbrother,Miguel Sanchez,Klaus Beran,Emma Wyatt,Krista
Leppiko,Marcel Koppes,Judy Chappell,Radek Janousek,Rosie Moss,David
Lockley,Nicola Haden,Bill Kennedy,Martina Morris,Kai Wuerfl-Davidek,
Christiane Leipersberger,Yvonne Grueneklee,Nadia Balavoine,and Chris
Reinders for making certain that our vision remains worldwide in scope.
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Hua,Joseph Chan,June Lim,and Siti Zuraidah Ahmad of Pansing Distributors
for the enthusiasm with which they receive our books.
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Stephen O’Donoghue,Bec Lowe,Mark Langley,and Anyo Geddes of Woodslane
for distributing our books throughout Australia, New Zealand, Papua New
Guinea,Fiji,Tonga,Solomon Islands,and the Cook Islands.
v
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About the CD
Most of the tools covered in this book are Open Source and are there-
fore constantly evolving.If you are deploying any of these tools to your
live network,please be sure to download the most recent versions.
Wherever possible,we have indicated sites where downloads are gener-
ally available.Please look for the CD Icon in the margins to indicate
applications or captures contained on the CD.
For convenience,and to allow for consistency in the examples
used,we have included Wireshark release 0.99.4;it is the most current
stable release of Wireshark as of the printing of this book.
For installation on Win 32 systems,the “Windows Installer”folder
contains the file wireshark-setup-0.99.4.exe.This Nullsoft Scriptable
Install System file prompts you through the installation of Wireshark
and WinPcap.Once installed,the programs are run via Start |
Programs.
The Source Files folder contains the file wireshark-0.99.4.tar.gz for
installation on non Windows systems.
You will also find folders containing the filters discussed in the
book and folder containing captures used in the exercises in Chapters
4,6 and 7.
Note:This CD contains packet captures of the Code Red Virus
and has “strings”in it that your AntiVirus software will detect.In order
to continue,you may need to disable real time protections.These files
do not contain viruses,just the harmless fingerprints.
Wireshark is subject to U.S.export regulations.Take heed.Consult
a lawyer if you have any questions
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Lead Author
Angela Orebaugh is an industry-recognized security technology
visionary and scientist,with over 12 years hands-on experience.She
currently performs leading-edge security consulting and works in
research and development to advance the state of the art in infor-
mation systems security.Angela currently participates in several
security initiatives for the National Institute of Standards and
Technology (NIST).She is the lead scientist for the National
Vulnerability Database and author of several NIST Special
Publications on security technologies.Angela has over a decade of
experience in information technology,with a focus on perimeter
defense,secure network design,vulnerability discovery,penetration
testing,and intrusion detection systems.She has a Masters in
Computer Science,and is currently pursuing her Ph.D.with a con-
centration in Information Security at George Mason University.
Angela is the author of the Syngress best seller Ethereal Packet
Sniffing (ISBN:1932266828).She has also co-authored the Snort
Cookbook and Intrusion Prevention and Active Response:Deploying
Network and Host IPS (Syngress,ISBN:193226647X).Angela is a
researcher,writer,and speaker for SANS Institute and faculty for
The Institute for Applied Network Security and George Mason
University.Angela has a wealth of knowledge from industry,
academia,and government from her consulting experience with
prominent Fortune 500 companies,the Department of Defense,
dot-com startups,and universities.She is a frequently invited speaker
at a variety of conferences and security events.
Current research interests:intrusion detection,intrusion preven-
tion,data mining,attacker profiling,user behavior analysis,network
forensics
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Technical Editor
and Contributing Author
Gilbert Ramirez was the first contributor to Ethereal after it was
announced to the public and is known for his regular updates to the
product.He has contributed protocol dissectors as well as core logic to
Ethereal.He is a Technical Leader at Cisco Systems,where he works on
tools and builds systems.Gilbert is a family man,a linguist,a want-to-be
chef,and a student of tae kwon do.He is co-author of Syngress
Publishing’s popular Ethereal Packet Sniffing (ISBN:1932266828).
Contributing Authors
Josh Burke (CISSP) is an independent information security consultant in
Seattle,Washington.He has held positions in networking,systems,and
security over the past seven years in the technology,financial,and media
sectors.A graduate of the business school at the University of Washington,
Josh concentrates on balancing technical and business needs for companies
in the many areas of information security.He also promotes an inclusive,
positive security philosophy for companies,which encourages communi-
cating the merits and reasons for security policies,rather than educating
only on what the policies forbid.
Josh is an expert in open-source security applications such as Snort,
Ethereal,and Nessus.His research interests include improving the security
and resilience of the Domain Name System (DNS) and the Network
Time Protocol (NTP).He also enjoys reading about the mathematics and
history of cryptography,but afterward often knows less about the subject
than when he started.
Larry Pesce (CCNA,GCFA Silver,GAWN Silver) is the Manager for
Information Services Security at Care New England,a mid-sized health-
care organization in New England.In the last 13 years in the computer
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industry,Larry has become a jack of all trades;PC repair,Network
Engineering,Web Design,Non-Linear Audio and Video production,and
Computer Security.Larry is also gainfully employed as a Penetration Tester
/ Ethical Hacker with Defensive Intuition,a Rhode Island-based security
consulting company.A graduate of Roger Williams University in
Compute Information Systems,Larry is currently exploring his options
for graduate education.
In addition to his industry experience,Larry is also a Security
Evangelist for the PaulDotCom Security Weekly podcast at
www.pauldotcom.com.Larry is currently completing a work with his
PaulDotCom Security Weekly co-host,Paul Asadoorian on hacking the
Linksys WRT54G.More of Larry’s writing,guides,and rants can be found
on his blog at www.haxorthematrix.com.
Greg Morris (5-CNA,5-CNE,3-MCNE,Linux+,LPIC-1) is a Senior
Resolution Engineer for Novell Technical Services in Provo,UT.
Originally from Oklahoma,Greg has spent over 25 years in the computer
industry.Although Greg has a degree in management,his passion is to be
creative.This is what the software development process provides.His vast
experience includes hardware and software troubleshooting on mainframe,
midrange,and PC computers.Greg’s early roots in software development
was in database technologies,dabbling in C and assembly,but mostly
working with a language called Clipper by Nantucket.Greg’s work on
Ethereal began in November of 2000.Since that time he has made a sig-
nificant number of contributions to the Ethereal (now Wireshark) project.
This would include new dissectors (NCP,NDS,NDPS) as well as new
features (Extended Find capabilities).Greg has made a number of modifi-
cations to many other dissectors and is currently developing Novell
Modular Authentication Services (NMAS),Novell SecretStore Services
(SSS),Novell International Cryptographic Infrastructure (NICI),and a
host of other Novell specific decodes.Greg has actively developed cus-
tomer and internal training programs for a number of different Novell
products.One of his most unique programs was developed to teach
internal users the skills necessary to analyze packet traces.Greg started
working with packet traces many years ago with Novell’s LANalyzer
product.From there Greg migrated to Network Associates Sniffer product.
But,since working with Ethereal to add complete Novell NCP/NDS
packet support,Greg would use nothing else.He currently develops on
Windows 2000 with Microsoft’s Visual C++,but has plans to move to
SuSe Linux and the GNU compiler for future Wireshark development.
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