Fundamentals of Network Security

Writing this book has been an enriching journey, and I am deeply grateful to all
those who supported me along the way.
First and foremost, I would like to express my heartfelt gratitude to my father,
S. Rama Krishna, my mother, G. Nalina, my wife, S. Archana, my son, S. Ashwadh,
my daughter, S. Aarushi, my brother, S. Athreya, and my sister-in-law, S. Supriya.
Your unwavering love, encouragement, and understanding were the foundation that
allowed me to pursue this project. Thank you for your patience and belief in me, even
during the most challenging times.
I am also deeply thankful to Dr. G. S. V. R. K. Choudary, Principal, and Mrs.
K. V. B. Saraswati Devi, Head of the Department of Computer Science, as well as Dr.
N. Bhaskar, mentor at Bhavan’s Vivekananda College of Science, Humanities, and
Commerce, Sainikpuri Kendra, Secunderabad, Telangana, who guided me with
wisdom, shared valuable insights, and provided feedback throughout the writing
process. Your expertise and encouragement were instrumental in shaping this book.
To my friends, thank you for your support and the much-needed moments of
laughter that balanced the intensity of writing. Special thanks to Dr. M. V. S.
Mahendra, Dr. G. Mahesh Kumar, and Dr. P. Karunakar for being there whenever I
needed a sounding board or a break.
I am also deeply thankful to my colleagues in the Department of Computer
Science and the Examination Branch of Bhavan’s Vivekananda College of Science,
Humanities, and Commerce, Sainikpuri Kendra, Secunderabad, Telangana, for their
unwavering support throughout my career.
I wish to express my deepest gratitude and profound thanks to my research
supervisor, Prof. M. V. Ramana Murthy, former professor and chairman of Computer
Science, Department of Mathematics, Osmania University, for his meticulous
technical guidance, valuable discussions, and insightful suggestions during the writing
of this book.
I am incredibly appreciative of my editor, whose sharp eye and thoughtful
suggestions brought clarity to my ideas. Your dedication to this project has been
inspiring, and I am grateful for your help in refining this book.
Finally, to my readers, thank you for picking up this book and embarking on
this journey with me. It is for you that I have written these pages, and I hope that they
offer inspiration, reflection, or simply a moment of joy in your day.