This book is basically depends on modern Network Security on Checkpoint Firewall. In this book you will found all the practical steps according to the lab scenario. This covered CCSA, CCSE, MDS and VSX practical steps. I tried to resolve all the problems related to the Checkpoint Firewall Security based on GaiA R77.20 OS. I had also published other separate ebook of CCSA, CCSE, MDS and VSX. Welcome to all that readers who wants to give the feed back of this book. Write to us on vishweshwarsahni@gmail.com or vishweshwar.s@rediffmail.com