Troubleshooting with Wireshark

Author: Laura Chappell
Publisher: Lightning Source Incorporated
ISBN: 1893939979
Release Date: 2013-12-23
Genre: Computers

Whether you are a Wireshark newbie or an experienced Wireshark user, this book streamlines troubleshooting techniques used by Laura Chappell in her 20] years of network analysis experience. Learn insider tips and tricks to quickly detect the cause of poor network performance. This book consists of troubleshooting labs to walk you through the process of measuring client/server/network delays, detecting application error responses, catching delayed responses, locating the point of packet loss, spotting TCP receiver congestion, and more. Key topics include: path delays, client delays, server delays, connection refusals, service refusals, receive buffer overload, rate throttling, packet loss, redirections, queueing along a path, resolution failures, small MTU sizes, port number reuse, missing support for TCP SACK/Window Scaling, misbehaving infrastructure devices, weak signals (WLAN), and more. Book supplements include sample trace files, Laura's Wireshark troubleshooting profile, and a troubleshooting checklist.

Handbook of Research on Engineering Education in a Global Context

Author: Smirnova, Elena V.
Publisher: IGI Global
ISBN: 9781522533962
Release Date: 2018-08-31
Genre: Education

Engineering education methods and standards are important features of engineering programs that should be carefully designed both to provide students and stakeholders with valuable, active, integrated learning experiences, and to provide a vehicle for assessing program outcomes. With the driving force of the globalization of the engineering profession, standards should be developed for mutual recognition of engineering education across the world, but it is proving difficult to achieve. The Handbook of Research on Engineering Education in a Global Context provides innovative insights into the importance of quality training and preparation for engineering students. It explores the common and current problems encountered in areas such as quality and standards, management information systems, innovation and enhanced learning technologies in education, as well as the challenges of employability, entrepreneurship, and diversity. This publication is vital reference source for science and engineering educators, engineering professionals, and educational administrators interested in topics centered on the education of students in the field of engineering.

Wireshark Network Security

Author: Piyush Verma
Publisher: Packt Publishing Ltd
ISBN: 9781784399511
Release Date: 2015-07-29
Genre: Computers

Wireshark is the world's foremost network protocol analyzer for network analysis and troubleshooting. This book will walk you through exploring and harnessing the vast potential of Wireshark, the world's foremost network protocol analyzer. The book begins by introducing you to the foundations of Wireshark and showing you how to browse the numerous features it provides. You'll be walked through using these features to detect and analyze the different types of attacks that can occur on a network. As you progress through the chapters of this book, you'll learn to perform sniffing on a network, analyze clear-text traffic on the wire, recognize botnet threats, and analyze Layer 2 and Layer 3 attacks along with other common hacks. By the end of this book, you will be able to fully utilize the features of Wireshark that will help you securely administer your network.

The Wireshark Field Guide

Author: Robert Shimonski
Publisher: Newnes
ISBN: 9780124104969
Release Date: 2013-05-14
Genre: Computers

The Wireshark Field Guide provides hackers, pen testers, and network administrators with practical guidance on capturing and interactively browsing computer network traffic. Wireshark is the world's foremost network protocol analyzer, with a rich feature set that includes deep inspection of hundreds of protocols, live capture, offline analysis and many other features. The Wireshark Field Guide covers the installation, configuration and use of this powerful multi-platform tool. The book give readers the hands-on skills to be more productive with Wireshark as they drill down into the information contained in real-time network traffic. Readers will learn the fundamentals of packet capture and inspection, the use of color codes and filters, deep analysis, including probes and taps, and much more. The Wireshark Field Guide is an indispensable companion for network technicians, operators, and engineers. Learn the fundamentals of using Wireshark in a concise field manual Quickly create functional filters that will allow you to get to work quickly on solving problems Understand the myriad of options and the deep functionality of Wireshark Solve common network problems Learn some advanced features, methods and helpful ways to work more quickly and efficiently

Network Analysis Using Wireshark 2 Cookbook

Author: Nagendra Kumar
Publisher: Packt Publishing Ltd
ISBN: 9781786463555
Release Date: 2018-03-30
Genre: Computers

Over 100 recipes to analyze and troubleshoot network problems using Wireshark 2 Key Features Place Wireshark 2 in your network and configure it for effective network analysis Deep dive into the enhanced functionalities of Wireshark 2 and protect your network with ease A practical guide with exciting recipes on a widely used network protocol analyzer Book Description This book contains practical recipes on troubleshooting a data communications network. This second version of the book focuses on Wireshark 2, which has already gained a lot of traction due to the enhanced features that it offers to users. The book expands on some of the subjects explored in the first version, including TCP performance, network security, Wireless LAN, and how to use Wireshark for cloud and virtual system monitoring. You will learn how to analyze end-to-end IPv4 and IPv6 connectivity failures for Unicast and Multicast traffic using Wireshark. It also includes Wireshark capture files so that you can practice what you’ve learned in the book. You will understand the normal operation of E-mail protocols and learn how to use Wireshark for basic analysis and troubleshooting. Using Wireshark, you will be able to resolve and troubleshoot common applications that are used in an enterprise network, like NetBIOS and SMB protocols. Finally, you will also be able to measure network parameters, check for network problems caused by them, and solve them effectively. By the end of this book, you’ll know how to analyze traffic, find patterns of various offending traffic, and secure your network from them. What you will learn Configure Wireshark 2 for effective network analysis and troubleshooting Set up various display and capture filters Understand networking layers, including IPv4 and IPv6 analysis Explore performance issues in TCP/IP Get to know about Wi-Fi testing and how to resolve problems related to wireless LANs Get information about network phenomena, events, and errors Locate faults in detecting security failures and breaches in networks Who this book is for This book is for security professionals, network administrators, R&D, engineering and technical support, and communications managers who are using Wireshark for network analysis and troubleshooting. It requires a basic understanding of networking concepts, but does not require specific and detailed technical knowledge of protocols or vendor implementations.

Hands On Linux Administration on Azure

Author: Frederik Vos
Publisher: Packt Publishing Ltd
ISBN: 9781789135107
Release Date: 2018-08-31
Genre: Computers

Learn to efficiently run Linux-based workloads in Azure Key Features Manage and deploy virtual machines in your Azure environment Explore various open source tools to integrate automation and orchestration Leverage Linux features to create, run, and manage containers Book Description Azure’s market share has increased massively and enterprises are adopting it rapidly. Linux is a widely-used operating system and has proven to be one of the most popular workloads on Azure. It has become crucial for Linux administrators and Microsoft professionals to be well versed with the concepts of managing Linux workloads in an Azure environment. Hands-On Linux Administration on Azure starts by introducing you to the fundamentals of Linux and Azure, after which you will explore advanced Linux features and see how they are managed in an Azure environment. Next, with the help of real-world scenarios, you will learn how to deploy virtual machines(VMs) in Azure, along with extending Azure VMs capabilities and managing them efficiently. You will then understand continuous configuration automation and use Ansible, SaltStack and Powershell DSC for orchestration. As you make your way through the chapters, you will understand containers and how they work, along with managing containers and the various tasks you can perform with them. In the concluding chapters, you will cover some Linux troubleshooting techniques on Azure, and you will also be able to monitor Linux in Azure using different open source tools. By the end of this book, you will be able to administer Linux on Azure and make the most of the important tools required for deployment. What you will learn Understand why Azure is the ideal solution for your open source workloads Master essential Linux skills and learn to find your way around the Linux environment Deploy Linux in an Azure environment Use configuration management to manage Linux in Azure Manage containers in an Azure environment Enhance Linux security and use Azure’s identity management systems Automate deployment with Azure Resource Manager (ARM) and Powershell Employ Ansible to manage Linux instances in an Azure cloud environment Who this book is for Hands-On Linux Administration on Azure is for Linux administrators and Microsoft professionals that need to deploy and manage their workloads in Azure. Prior knowledge of Linux and Azure isn't necessary.

Sys Admin

Author:
Publisher:
ISBN: UCSD:31822036030583
Release Date: 2007
Genre: Operating systems (Computers)


Netzwerke f r Dummies

Author: Doug Lowe
Publisher: John Wiley & Sons
ISBN: 9783527802982
Release Date: 2016-03-30
Genre: Computers

Dieses Buch hilft Ihnen bei der Installation, Konfiguration und Administration Ihres ersten Netzwerks, ganz egal, ob Sie es zu Hause oder beruflich einrichten. Doug Lowe unterstützt Sie bei der Auswahl des Betriebssystems, bei der Verlegung der Kabel und bei der Installation des Serverrechners und der darauf laufenden Software. Und dann geht es ran ans Netz: Benutzerkonten einrichten, Datei-, Mail- und Webserver konfigurieren, Mobilgeräte integrieren und vieles mehr. Und natürlich kommen auch die Themen Backup, Sicherheit und Leistungsoptimierung nicht zu kurz. Das Buch hat den Fokus auf Windows-Servern, geht aber gelegentlich auch auf die Alternativen Linux und Mac OS ein.

Versionsverwaltung mit Git

Author: Sujeevan Vijayakumaran
Publisher: BoD – Books on Demand
ISBN: 9783958452268
Release Date: 2018-02-20
Genre: Computers

Viele Software-Entwickler oder Systemadministratoren haben Git bereits im Einsatz - sowohl im Firmenumfeld als auch in Open-Source-Projekten. Zum Einstieg lernen Anfänger häufig nur die wichtigsten Befehle, die schnell nicht mehr ausreichen, vor allem wenn die ersten Fehler auftreten. Dieses Buch behandelt einerseits die gängigen Befehle, die Sie beim täglichen Arbeiten mit Git brauchen. Andererseits geht es dem Autor auch darum, dass Sie Git als Ganzes verstehen, um es effektiv im Entwicklungsprozess einsetzen zu können. Der Fokus des Buches liegt auf dem praktischen Arbeiten mit Git. Sie lernen anhand eines kleinen Beispielprojektes, welche Befehle es gibt, wie diese arbeiten und wie Sie auftretende Probleme lösen können. Neben den Funktionen, die Sie täglich brauchen, finden Sie auch eher seltener gebrauchte Kommandos, die aber ebenfalls wichtig sind. Dabei legt der Autor auch großen Wert auf die Einbindung und Anpassung des Entwicklungsprozesses. Im zweiten Teil des Buches werden fortgeschrittene Themen behandelt. Dabei liegt der Schwerpunkt auf dem Einsatz von Git in Software-Entwicklungsteams. Hier geht es um das Hosten verteilter Repositories mit GitHub und GitLab. Ein weiteres Kapitel behandelt die verschiedenen Workflows je nach Anzahl der beteiligten Personen, Branches und Repositories eines Projektes. Außerdem werden Git-Hooks behandelt und deren Programmierung sowie das automatisierte Prüfen simpler Fehler. Darüber hinaus gibt der Autor Tipps und Hinweise für den Umstieg von Subversion sowie einen Überblick über verschiedene grafische Git-Programme. Das Buch richtet sich nicht nur an Einsteiger, die sich noch nie mit Git beschäftigt haben, auch Umsteiger und Leser mit vorhandenen Kenntnissen erhalten viele weiterführende Informationen.

Hacking mit Security Onion

Author: Chris Sanders
Publisher: Franzis Verlag
ISBN: 9783645204965
Release Date: 2016-09-12
Genre: Computers

Sie können noch so viel in Hardware, Software und Abwehrmechanismen investieren, absolute Sicherheit für Ihre IT-Infrastruktur wird es nicht geben. Wenn Hacker sich wirklich anstrengen, werden sie auch in Ihr System gelangen. Sollte das geschehen, müssen Sie sowohl technisch als auch organisatorisch so aufgestellt sein, dass Sie die Gegenwart eines Hackers erkennen und darauf reagieren können. Sie müssen in der Lage sein, einen Zwischenfall zu deklarieren und die Angreifer aus Ihrem Netzwerk zu vertreiben, bevor sie erheblichen Schaden anrichten. Das ist Network Security Monitoring (NSM). Lernen Sie von dem leitenden Sicherheitsanalytiker Sanders die Feinheiten des Network Security Monitoring kennen. Konzepte verstehen und Network Security Monitoring mit Open-Source-Tools durchführen: Lernen Sie die drei NSM-Phasen kennen, um diese in der Praxis anzuwenden. Die praktische Umsetzung der NSM erfolgt mit vielen Open-Source-Werkzeugen wie z. B. Bro, Daemonlogger, Dumpcap, Justniffer, Honeyd, Httpry, Netsniff-NG, Sguil, SiLK, Snorby Snort, Squert, Suricata, TShark und Wireshark. Anhand von ausführlichen Beispielen lernen Sie, die Tools effizient in Ihrem Netzwerk einzusetzen.

DNS BIND Kochbuch

Author: Cricket Liu
Publisher: O'Reilly Germany
ISBN: 3897213524
Release Date: 2003
Genre: Computer network protocols