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You're reading from  The Ultimate Kali Linux Book - Second Edition

Product typeBook
Published inFeb 2022
PublisherPackt
ISBN-139781801818933
Edition2nd Edition
Concepts
Cybersecurity
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Author (1)
Glen D. Singh
Glen D. Singh
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Glen D. Singh

Glen D. Singh is a cybersecurity author, educator and SecOps professional. His areas of expertise are cybersecurity operations, offensive security tactics and techniques, and enterprise networking. He holds a Master of Science (MSc) in cybersecurity and many industry certifications from top awarding bodies such as EC-Council, Cisco, and Check Point. Glen loves teaching and mentoring others while sharing his wealth of knowledge and experience as an author. He has written many books, which focus on vulnerability discovery and exploitation, threat detection, intrusion analysis, incident response, network security, and enterprise networking. As an aspiring game changer, Glen is passionate about increasing cybersecurity awareness in his homeland, Trinidad and Tobago.
Read more about Glen D. Singh

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Exploring DNS reconnaissance

The DNS is an application layer protocol that allows a system such as a computer to resolve a hostname to an IP address. While there are so many devices on a network, especially on the internet, remembering the IP address of each web server is quite challenging. Using DNS, a system administrator can configure each device with both an IP address and a hostname. Using a hostname is a lot easier to remember, such as www.packtpub.com or www.google.com. However, do you know the IP addresses of the servers that are hosting those websites for Packt and Google? You probably don't, and that's OK because around the world on the internet, there is a hierarchy of special servers that contain the records of public hostnames and their IP addresses. These are known as DNS servers.

A DNS server is like a traditional telephone directory, with a list of people and their telephone numbers. On a DNS server, you can find records of the hostnames of people, as...

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The Ultimate Kali Linux Book - Second Edition
Published in: Feb 2022Publisher: PacktISBN-13: 9781801818933
© 2022 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Glen D. Singh

Glen D. Singh is a cybersecurity author, educator and SecOps professional. His areas of expertise are cybersecurity operations, offensive security tactics and techniques, and enterprise networking. He holds a Master of Science (MSc) in cybersecurity and many industry certifications from top awarding bodies such as EC-Council, Cisco, and Check Point. Glen loves teaching and mentoring others while sharing his wealth of knowledge and experience as an author. He has written many books, which focus on vulnerability discovery and exploitation, threat detection, intrusion analysis, incident response, network security, and enterprise networking. As an aspiring game changer, Glen is passionate about increasing cybersecurity awareness in his homeland, Trinidad and Tobago.
Read more about Glen D. Singh

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