Book Image

Learning Network Forensics

By : Samir Datt
Book Image

Learning Network Forensics

By: Samir Datt

Overview of this book

We live in a highly networked world. Every digital device—phone, tablet, or computer is connected to each other, in one way or another. In this new age of connected networks, there is network crime. Network forensics is the brave new frontier of digital investigation and information security professionals to extend their abilities to catch miscreants on the network. The book starts with an introduction to the world of network forensics and investigations. You will begin by getting an understanding of how to gather both physical and virtual evidence, intercepting and analyzing network data, wireless data packets, investigating intrusions, and so on. You will further explore the technology, tools, and investigating methods using malware forensics, network tunneling, and behaviors. By the end of the book, you will gain a complete understanding of how to successfully close a case.
Table of Contents (17 chapters)
Learning Network Forensics
About the Author
About the Reviewers

Chapter 6. Connecting the Dots – Event Logs


"We need to connect the dots to make the invisible visible"

 --Samir Datt

Just as we need to connect the dots to build a big picture, from a network forensics perspective, we need to correlate logs in order to get to the big picture of activity on a network. All devices that maintain logs of events are a great resource to track intruder activity. In our role as Network 007s, we will use these logs to try and track every step of the route taken by an intruder in our network.

Let's begin by trying to understand what logs are. A log, as the name suggests, is a record of information generated in response to a specific event or activity that occurs on a system or network. A log aims to capture the who, what, when, and where of an event. Logs can include the information about the date and time of the activity; device or application the log relates to; associated user or account; type of log—such as error, warning, information, and success or failure audits...