Practical Packet Analysis

Practical Packet Analysis Author Chris Sanders
ISBN-10 9781593271497
Release 2007
Pages 164
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Provides information on ways to use Wireshark to capture and analyze packets, covering such topics as building customized capture and display filters, graphing traffic patterns, and building statistics and reports.



Practical Packet Analysis 3rd Edition

Practical Packet Analysis  3rd Edition Author Chris Sanders
ISBN-10 9781593278021
Release 2017-04-05
Pages 368
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Wireshark is the world’s most popular network sniffer that makes capturing packets easy, but it won’t be much help if you don’t have a solid foundation in packet analysis. Practical Packet Analysis, 3rd Edition will show you how to make sense of your PCAP data and let you start troubleshooting the problems on your network. This third edition is updated for Wireshark 2.0.5 and IPv6, making it the definitive guide to packet analysis and a must for any network technician, administrator, or engineer. This updated version includes two new chapters that will teach you how to use the powerful command-line packet analyzers tcpdump and TShark as well as how to read and reference packet values using a packet map. Practical Packet Analysis will introduce you to the basics of packet analysis, starting with how networks work and how packets travel along the wire. Then you’ll move on to navigating packets and using Wireshark for packet capture and analysis. The book then covers common lower-layer and upper-layer protocols and provides you with solutions to real-world scenarios like Internet connectivity issues, how to intercept malware traffic, and fighting a slow network. You’ll learn how to: *Monitor your network in real-time and tap live network communications *Recognize common network protocols including TCP, IPv4 and IPv6, SMTP, and ARP *Build customized capture and display filters to quickly navigate through large numbers of packets *Troubleshoot and resolve common network problems like loss of connectivity, DNS issues, and sluggish speeds with packet analysis *Understand how modern exploits and malware behave at the packet level *Carve out data in a packet to retrieve the actual files sent across the network *Graph traffic patterns to visualize the data flowing across your network *Use advanced Wireshark features to understand confusing captures *Build statistics and reports to help you better explain technical network information to non-techies Whether you’re a budding network analyst in need of a headfirst dive into packet analysis or an experienced administrator searching for new tricks, look no further than the third edition of Practical Packet Analysis.



Network Analysis using Wireshark Cookbook

Network Analysis using Wireshark Cookbook Author Yoram Orzach
ISBN-10 9781849517652
Release 2013-12-24
Pages 452
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Network analysis using Wireshark Cookbook contains more than 100 practical recipes for analyzing your network and troubleshooting problems in the network. This book provides you with simple and practical recipes on how to solve networking problems with a step-by-step approach. This book is aimed at research and development professionals, engineering and technical support, and IT and communications managers who are using Wireshark for network analysis and troubleshooting. This book requires a basic understanding of networking concepts, but does not require specific and detailed technical knowledge of protocols or vendor implementations.



Wireshark for Security Professionals

Wireshark for Security Professionals Author Jessey Bullock
ISBN-10 9781118918210
Release 2017-03-20
Pages 288
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Leverage Wireshark, Lua and Metasploit to solve any securitychallenge Wireshark is arguably one of the most versatile networking toolsavailable, allowing microscopic examination of almost any kind ofnetwork activity. This book is designed to help you quicklynavigate and leverage Wireshark effectively, with a primer forexploring the Wireshark Lua API as well as an introduction to theMetasploit Framework. Wireshark for Security Professionals covers bothoffensive and defensive concepts that can be applied to any Infosecposition, providing detailed, advanced content demonstrating thefull potential of the Wireshark tool. Coverage includes theWireshark Lua API, Networking and Metasploit fundamentals, plusimportant foundational security concepts explained in a practicalmanner. You are guided through full usage of Wireshark, frominstallation to everyday use, including how to surreptitiouslycapture packets using advanced MiTM techniques. Practicaldemonstrations integrate Metasploit and Wireshark demonstrating howthese tools can be used together, with detailed explanations andcases that illustrate the concepts at work. These concepts can beequally useful if you are performing offensive reverse engineeringor performing incident response and network forensics. Lua sourcecode is provided, and you can download virtual lab environments aswell as PCAPs allowing them to follow along and gain hands onexperience. The final chapter includes a practical case study thatexpands upon the topics presented to provide a cohesive example ofhow to leverage Wireshark in a real world scenario. Understand the basics of Wireshark and Metasploit within thesecurity space Integrate Lua scripting to extend Wireshark and perform packetanalysis Learn the technical details behind common networkexploitation Packet analysis in the context of both offensive and defensivesecurity research Wireshark is the standard network analysis tool used across manyindustries due to its powerful feature set and support for numerousprotocols. When used effectively, it becomes an invaluable tool forany security professional, however the learning curve can be steep.Climb the curve more quickly with the expert insight andcomprehensive coverage inWireshark for SecurityProfessionals.



Applied Network Security Monitoring

Applied Network Security Monitoring Author Chris Sanders
ISBN-10 9780124172166
Release 2013-11-26
Pages 496
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Applied Network Security Monitoring is the essential guide to becoming an NSM analyst from the ground up. This book takes a fundamental approach to NSM, complete with dozens of real-world examples that teach you the key concepts of NSM. Network security monitoring is based on the principle that prevention eventually fails. In the current threat landscape, no matter how much you try, motivated attackers will eventually find their way into your network. At that point, it is your ability to detect and respond to that intrusion that can be the difference between a small incident and a major disaster. The book follows the three stages of the NSM cycle: collection, detection, and analysis. As you progress through each section, you will have access to insights from seasoned NSM professionals while being introduced to relevant, practical scenarios complete with sample data. If you've never performed NSM analysis, Applied Network Security Monitoring will give you an adequate grasp on the core concepts needed to become an effective analyst. If you are already a practicing analyst, this book will allow you to grow your analytic technique to make you more effective at your job. Discusses the proper methods for data collection, and teaches you how to become a skilled NSM analyst Provides thorough hands-on coverage of Snort, Suricata, Bro-IDS, SiLK, and Argus Loaded with practical examples containing real PCAP files you can replay, and uses Security Onion for all its lab examples Companion website includes up-to-date blogs from the authors about the latest developments in NSM



Network Flow Analysis

Network Flow Analysis Author Michael Lucas
ISBN-10 9781593272036
Release 2010
Pages 224
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A detailed and complete guide to exporting, collecting, analyzing, and understanding network flows to make managing networks easier. Network flow analysis is the art of studying the traffic on a computer network. Understanding the ways to export flow and collect and analyze data separates good network administrators from great ones. The detailed instructions in Network Flow Analysis teach the busy network administrator how to build every component of a flow-based network awareness system and how network analysis and auditing can help address problems and improve network reliability. Readers learn what flow is, how flows are used in network management, and how to use a flow analysis system. Real-world examples illustrate how to best apply the appropriate tools and how to analyze data to solve real problems. Lucas compares existing popular tools for network management, explaining why they don't address common real-world issues and demonstrates how, once a network administrator understands the underlying process and techniques of flow management, building a flow management system from freely-available components is not only possible but actually a better choice than much more expensive systems.



Wireshark Network Analysis

Wireshark Network Analysis Author Laura Chappell
ISBN-10 1893939944
Release 2012
Pages 986
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"Network analysis is the process of listening to and analyzing network traffic. Network analysis offers an insight into network communications to identify performance problems, locate security breaches, analyze application behavior, and perform capacity planning. Network analysis (aka "protocol analysis") is a process used by IT professionals who are responsible for network performance and security." -- p. 2.



The Practice of Network Security Monitoring

The Practice of Network Security Monitoring Author Richard Bejtlich
ISBN-10 9781593275099
Release 2013
Pages 341
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Offers information on building, deploying, and running a network security monitoring operation with open source software and vendor-neutral tools.



Network Maintenance and Troubleshooting Guide

Network Maintenance and Troubleshooting Guide Author Neal Allen
ISBN-10 0321647629
Release 2009-10-18
Pages 576
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Network Maintenance and Troubleshooting Guide Field-Tested Solutions for Everyday Problems, Second Edition Neal Allen The 100% practical, real-world guide to anticipating, finding, and solving network problems—fast! Real-life networks don’t always behave “by the book.” Troubleshooting them requires practical intuition that normally comes only with experience. In this book, Fluke Networks’ Neal Allen brings together all that hard-won, hands-on insight: everything you need to discover what’s really happening in your network, so you can anticipate and fix problems before users even notice them. Writing for network technicians and administrators at all levels, Allen presents an approach to troubleshooting that has been proven in networks of all kinds, no matter how complex. He introduces indispensable triage and troubleshooting techniques for everything from copper and fiber cabling to IPv6, and presents unparalleled guidance on identifying and resolving problems at the MAC Layer. He illustrates his advice with diagrams, tables, and screen captures from Fluke Networks’ market-leading instruments. Throughout this book, Allen also offers practical summaries of each of today’s core networking technologies, making it an ideal complement to any network certification study guide. Coverage includes Using the OSI model to more efficiently troubleshoot networks layer by layer Copper and fiber-optic cabling: theory, operation, and troubleshooting Media Access Control (MAC) Layer: Ethernet theory and operation Identifying and resolving problems related to IPv4 and IPv6 protocols Preventing problems before they occur Discovering device behavior Troubleshooting switches Using a protocol analyzer more successfully Creating network documentation that helps you more efficiently prevent and resolve problems Road tested by thousands of Fluke Networks customers, this book’s first edition became the best-kept secret resource for sysadmins, netadmins, and support technicians fortunate enough to discover it. Now, Allen has thoroughly updated his classic for today’s networks. If you’re responsible for maintaining one of those networks, you’ll find this new Second Edition even more indispensable. Neal Allen is a senior staff engineer in the Fluke Networks’ Technical Assistance Center (TAC) focusing on escalated problems. He has been involved in designing, installing, and troubleshooting networks for nearly 20 years. Allen has served on Interop’s trade show Network Operations Center (NOC) team since 1993, troubleshooting show-floor problems at the Las Vegas and Atlanta Interop trade shows, and helped support and troubleshoot the network for the 1996 Atlanta Olympic Games. His responsibilities currently include product feature specification and beta testing, remote and onsite problem solving, and providing training and sales support worldwide. informit.com/aw Cover design by Louisa Adair Cover photography from Image Source / Getty Images



Wireshark 101

Wireshark 101 Author Laura Chappell
ISBN-10 1893939758
Release 2017-03-14
Pages 408
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Based on over 20 years of analyzing networks and teaching key analysis skills, this Second Edition covers the key features and functions of Wireshark version 2. This book includes 46 Labs and end-of-chapter Challenges to help you master Wireshark for troubleshooting, security, optimization, application analysis, and more.



Mastering Wireshark

Mastering Wireshark Author Charit Mishra
ISBN-10 9781783989539
Release 2016-03-30
Pages 308
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Analyze data network like a professional by mastering Wireshark - From 0 to 1337 About This Book Master Wireshark and train it as your network sniffer Impress your peers and get yourself pronounced as a network doctor Understand Wireshark and its numerous features with the aid of this fast-paced book packed with numerous screenshots, and become a pro at resolving network anomalies Who This Book Is For Are you curious to know what's going on in a network? Do you get frustrated when you are unable to detect the cause of problems in your networks? This is where the book comes into play. Mastering Wireshark is for developers or network enthusiasts who are interested in understanding the internal workings of networks and have prior knowledge of using Wireshark, but are not aware about all of its functionalities. What You Will Learn Install Wireshark and understand its GUI and all the functionalities of it Create and use different filters Analyze different layers of network protocols and know the amount of packets that flow through the network Decrypt encrypted wireless traffic Use Wireshark as a diagnostic tool and also for network security analysis to keep track of malware Troubleshoot all the network anomalies with help of Wireshark Resolve latencies and bottleneck issues in the network In Detail Wireshark is a popular and powerful tool used to analyze the amount of bits and bytes that are flowing through a network. Wireshark deals with the second to seventh layer of network protocols, and the analysis made is presented in a human readable form. Mastering Wireshark will help you raise your knowledge to an expert level. At the start of the book, you will be taught how to install Wireshark, and will be introduced to its interface so you understand all its functionalities. Moving forward, you will discover different ways to create and use capture and display filters. Halfway through the book, you'll be mastering the features of Wireshark, analyzing different layers of the network protocol, looking for any anomalies. As you reach to the end of the book, you will be taught how to use Wireshark for network security analysis and configure it for troubleshooting purposes. Style and approach Every chapter in this book is explained to you in an easy way accompanied by real-life examples and screenshots of the interface, making it easy for you to become an expert at using Wireshark.



How Linux Works 2nd Edition

How Linux Works  2nd Edition Author Brian Ward
ISBN-10 9781593275679
Release 2014-11-14
Pages 392
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Unlike some operating systems, Linux doesn’t try to hide the important bits from you—it gives you full control of your computer. But to truly master Linux, you need to understand its internals, like how the system boots, how networking works, and what the kernel actually does. In this completely revised second edition of the perennial best seller How Linux Works, author Brian Ward makes the concepts behind Linux internals accessible to anyone curious about the inner workings of the operating system. Inside, you’ll find the kind of knowledge that normally comes from years of experience doing things the hard way. You’ll learn: * How Linux boots, from boot loaders to init implementations (systemd, Upstart, and System V) * How the kernel manages devices, device drivers, and processes * How networking, interfaces, firewalls, and servers work * How development tools work and relate to shared libraries * How to write effective shell scripts You’ll also explore the kernel and examine key system tasks inside user space, including system calls, input and output, and filesystems. With its combination of background, theory, real-world examples, and patient explanations, How Linux Works will teach you what you need to know to solve pesky problems and take control of your operating system.



Snort Cookbook

Snort Cookbook Author Angela Orebaugh
ISBN-10 059655270X
Release 2005-03-29
Pages 288
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If you are a network administrator, you're under a lot of pressure to ensure that mission-critical systems are completely safe from malicious code, buffer overflows, stealth port scans, SMB probes, OS fingerprinting attempts, CGI attacks, and other network intruders. Designing a reliable way to detect intruders before they get in is an essential--but often overwhelming--challenge. Snort, the defacto open source standard of intrusion detection tools, is capable of performing real-time traffic analysis and packet logging on IP network. It can perform protocol analysis, content searching, and matching. Snort can save countless headaches; the new Snort Cookbook will save countless hours of sifting through dubious online advice or wordy tutorials in order to leverage the full power of SNORT.Each recipe in the popular and practical problem-solution-discussion O'Reilly cookbook format contains a clear and thorough description of the problem, a concise but complete discussion of a solution, and real-world examples that illustrate that solution. The Snort Cookbook covers important issues that sys admins and security pros will us everyday, such as: installation optimization logging alerting rules and signatures detecting viruses countermeasures detecting common attacks administration honeypots log analysis But the Snort Cookbook offers far more than quick cut-and-paste solutions to frustrating security issues. Those who learn best in the trenches--and don't have the hours to spare to pore over tutorials or troll online for best-practice snippets of advice--will find that the solutions offered in this ultimate Snort sourcebook not only solve immediate problems quickly, but also showcase the best tips and tricks they need to master be security gurus--and still have a life.



Computer Networking

Computer Networking Author Jeanna Matthews
ISBN-10 0471661864
Release 2005-01-03
Pages 288
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Hands-on networking experience, without the lab! The best way to learn about network protocols is to see them in action. But that doesn't mean that you need a lab full of networking equipment. This revolutionary text and its accompanying CD give readers realistic hands-on experience working with network protocols, without requiring all the routers, switches, hubs, and PCs of an actual network. Computer Networking: Internet Protocols in Action provides packet traces of real network activity on CD. Readers open the trace files using Ethereal, an open source network protocol analyzer, and follow the text to perform the exercises, gaining a thorough understanding of the material by seeing it in action. Features * Practicality: Readers are able to learn by doing, without having to use actual networks. Instructors can add an active learning component to their course without the overhead of collecting the materials. * Flexibility: This approach has been used successfully with students at the graduate and undergraduate levels. Appropriate for courses regardless of whether the instructor uses a bottom-up or a top-down approach. * Completeness: The exercises take the reader from the basics of examining quiet and busy networks through application, transport, network, and link layers to the crucial issues of network security.



A Practical Theory of Programming

A Practical Theory of Programming Author Eric C.R. Hehner
ISBN-10 0387941061
Release 1993-08-06
Pages 247
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There are several theories of programming. The first usable theory, often called "Hoare's Logic", is still probably the most widely known. In it, a specification is a pair of predicates: a precondition and postcondition (these and all technical terms will be defined in due course). Another popular and closely related theory by Dijkstra uses the weakest precondition predicate transformer, which is a function from programs and postconditions to preconditions. lones's Vienna Development Method has been used to advantage in some industries; in it, a specification is a pair of predicates (as in Hoare's Logic), but the second predicate is a relation. Temporal Logic is yet another formalism that introduces some special operators and quantifiers to describe some aspects of computation. The theory in this book is simpler than any of those just mentioned. In it, a specification is just a boolean expression. Refinement is just ordinary implication. This theory is also more general than those just mentioned, applying to both terminating and nonterminating computation, to both sequential and parallel computation, to both stand-alone and interactive computation. And it includes time bounds, both for algorithm classification and for tightly constrained real-time applications.



Internet Denial of Service

Internet Denial of Service Author David Dittrich
ISBN-10 0132704544
Release 2004-12-30
Pages 400
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Suddenly your Web server becomes unavailable. When you investigate, you realize that a flood of packets is surging into your network. You have just become one of the hundreds of thousands of victims of a denial-of-service attack, a pervasive and growing threat to the Internet. What do you do? Internet Denial of Service sheds light on a complex and fascinating form of computer attack that impacts the confidentiality, integrity, and availability of millions of computers worldwide. It tells the network administrator, corporate CTO, incident responder, and student how DDoS attacks are prepared and executed, how to think about DDoS, and how to arrange computer and network defenses. It also provides a suite of actions that can be taken before, during, and after an attack. Inside, you'll find comprehensive information on the following topics How denial-of-service attacks are waged How to improve your network's resilience to denial-of-service attacks What to do when you are involved in a denial-of-service attack The laws that apply to these attacks and their implications How often denial-of-service attacks occur, how strong they are, and the kinds of damage they can cause Real examples of denial-of-service attacks as experienced by the attacker, victim, and unwitting accomplices The authors' extensive experience in handling denial-of-service attacks and researching defense approaches is laid out clearly in practical, detailed terms.



TCP IP Illustrated Volume 1

TCP IP Illustrated  Volume 1 Author Kevin R. Fall
ISBN-10 9780132808187
Release 2011-11-08
Pages 850
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“For an engineer determined to refine and secure Internet operation or to explore alternative solutions to persistent problems, the insights provided by this book will be invaluable.” —Vint Cerf, Internet pioneer TCP/IP Illustrated, Volume 1, Second Edition, is a detailed and visual guide to today’s TCP/IP protocol suite. Fully updated for the newest innovations, it demonstrates each protocol in action through realistic examples from modern Linux, Windows, and Mac OS environments. There’s no better way to discover why TCP/IP works as it does, how it reacts to common conditions, and how to apply it in your own applications and networks. Building on the late W. Richard Stevens’ classic first edition, author Kevin R. Fall adds his cutting-edge experience as a leader in TCP/IP protocol research, updating the book to fully reflect the latest protocols and best practices. He first introduces TCP/IP’s core goals and architectural concepts, showing how they can robustly connect diverse networks and support multiple services running concurrently. Next, he carefully explains Internet addressing in both IPv4 and IPv6 networks. Then, he walks through TCP/IP’s structure and function from the bottom up: from link layer protocols–such as Ethernet and Wi-Fi–through network, transport, and application layers. Fall thoroughly introduces ARP, DHCP, NAT, firewalls, ICMPv4/ICMPv6, broadcasting, multicasting, UDP, DNS, and much more. He offers extensive coverage of reliable transport and TCP, including connection management, timeout, retransmission, interactive data flow, and congestion control. Finally, he introduces the basics of security and cryptography, and illuminates the crucial modern protocols for protecting security and privacy, including EAP, IPsec, TLS, DNSSEC, and DKIM. Whatever your TCP/IP experience, this book will help you gain a deeper, more intuitive understanding of the entire protocol suite so you can build better applications and run more reliable, efficient networks.