This book is primarily focused on SSH Protocol, and its architecture and its working environment. The Secure Shell (SSH) Connection Protocol," states that the Connection Protocol runs on top of the Transport Layer Protocol and the User Authentication Protocol. RFC 4251, "SSH Protocol Architecture," states that the Connection Protocol runs over the User Authentication Protocol. <br> <br> <br>About the Author : <br>Cisco and Microsoft certified expert with ITIL V3 Advanced certification in hand. Also having more than 3 years of corporate experience and more than 1 year of experience in teaching about Network Security.