Book Image

Hands-On Network Forensics

By : Nipun Jaswal
2 (2)
Book Image

Hands-On Network Forensics

2 (2)
By: Nipun Jaswal

Overview of this book

Network forensics is a subset of digital forensics that deals with network attacks and their investigation. In the era of network attacks and malware threat, it’s now more important than ever to have skills to investigate network attacks and vulnerabilities. Hands-On Network Forensics starts with the core concepts within network forensics, including coding, networking, forensics tools, and methodologies for forensic investigations. You’ll then explore the tools used for network forensics, followed by understanding how to apply those tools to a PCAP file and write the accompanying report. In addition to this, you will understand how statistical flow analysis, network enumeration, tunneling and encryption, and malware detection can be used to investigate your network. Towards the end of this book, you will discover how network correlation works and how to bring all the information from different types of network devices together. By the end of this book, you will have gained hands-on experience of performing forensics analysis tasks.
Table of Contents (16 chapters)
Free Chapter
1
Section 1: Obtaining the Evidence
4
Section 2: The Key Concepts
8
Section 3: Conducting Network Forensics

The flow record and flow-record processing systems (FRPS) 

A flow record is the metadata information about flow on the network. Consider a scenario where an infected system is talking to the attacker's system and has uploaded two documents of 5 MB each to the attacker's system. In such cases, the flow record will contain information such as the IP addresses of both the compromised host and the attacker system, port numbers, date and time, and the amount of data exchanged, which in this case would be around 10 MB.

Understanding flow-record processing systems

The systems responsible for managing, building, and processing flow records are called flow-record processing systems. An FRPS consists of the following...