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Kali Linux 2 ??? Assuring Security by Penetration Testing

You're reading from Kali Linux 2 ??? Assuring Security by Penetration Testing Achieve the gold standard in penetration testing with Kali using this masterpiece, now in its third edition!

Product type Paperback

Published in Sep 2016

Publisher Packt

ISBN-13 9781785888427

Length 572 pages

Edition 3rd Edition

Tools

Kali Linux

Concepts

Penetration Testing

Authors (4):

Tedi Heriyanto

Gerard Johansen

Lee Allen

Shakeel Ali

View More author details

Table of Contents (18) Chapters

Preface

1. Beginning with Kali Linux FREE CHAPTER

2. Penetration Testing Methodology

3. Target Scoping

4. Information Gathering

5. Target Discovery

6. Enumerating Target

7. Vulnerability Mapping

8. Social Engineering

9. Target Exploitation

10. Privilege Escalation

11. Maintaining Access

12. Wireless Penetration Testing

13. Kali Nethunter

14. Documentation and Reporting

A. Supplementary Tools

B. Key Resources

Index

Understanding the TCP and UDP message format

The TCP message is called a segment. A TCP segment consists of a header and a data section. The TCP header is often 20 bytes long (without TCP options). It can be described using the following figure:

Here is a brief description of each field:

The Source Port and the Destination Port have a length of 16 bits each. The source port is the port on the sending machine that transmits the packet, while the destination port is the port on the target machine that receives the packet.
The Sequence Number (32 bits), in a normal transmission, is the sequence number of the first byte of data of this segment.
The Acknowledgment Number (32 bits) contains the sequence number from the sender, increased by one.
H.Len. (4 bits) is the size of the TCP header in 32-bit words.
Rsvd. is reserved for future use. It is a 4-bit field and must be zero.
The Control Bits (control flags) contains eight 1-bit flags. In the original specification (RFC 793; the RFC can be downloaded...

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Authors (4)

Gerard Johansen

Gerard Johansen

Gerard Johansen is an incident response professional with over 15 years' experience in areas like penetration testing, vulnerability management, threat assessment modeling, and incident response. Beginning his information security career as a cyber crime investigator, he has built on that experience while working as a consultant and security analyst for clients and organizations ranging from healthcare to finance. Gerard is a graduate of Norwich University's Master of Science in Information Assurance program and a certified information systems security professional. He is currently employed as a senior incident response consultant with a large technology company, focusing on incident detection, response, and threat intelligence integration.

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Ali

Ali

Shakeel Ali is a senior cybersecurity consultant at a global Fortune 500 organization. His expertise in the security industry markedly exceeds the standard number of security assessments, audits, attack simulations, SOC/CSIRC facilitation, incident response, and forensic projects that he carries out in day-to-day operations. He is an independent researcher who writes various articles and white papers to provide insights into threat intelligence, and also provides constant security support to various businesses globally.

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Heriyanto

Heriyanto

Tedi Heriyanto currently works as an information security analyst at a Fortune 500 company. He has experience of designing secure network architectures, deploying and managing enterprise-wide security systems, developing information security policies and procedures, performing various network, web, and mobile application penetration testing, and giving information security training. In his spare time, he deepens his knowledge and skills in information fields.

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Allen

Allen

Lee Allen is the associate director at Ohio State University. He specializes in information security, penetration testing, security research, task automation, risk management, data analysis, and 3D application development.

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