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

Source of network evidence

Network evidence can be collected from a variety of sources and we will discuss these sources in the next section. The sources that we will be discussing are:

  • Tapping the wire and the air
  • CAM table on a network switch
  • Routing tables on routers
  • Dynamic Host Configuration Protocol logs
  • DNS server logs
  • Domain controller/ authentication servers/ system logs
  • IDS/IPS logs
  • Firewall logs
  • Proxy Server logs

Tapping the wire and the air

One of the purest and most raw forms of information capture is to put taps on network and optical fiber cables to snoop on traffic.

 Many commercial vendors provide network taps and SPAN ports on their devices for snooping...