This is not an unbiased review. Michael W. Lucas cites my praise for two of his previous books, and mentions one of my books in his text. I've also stated many times that MWL is my favorite technical author. With that in mind, I am pleased to say that SSH Mastery is another must-have, must-read for anyone working in IT. I imagine that most of us use OpenSSH and/or PuTTY every day, but I am sure each of us will learn something about these tools and the SSH protocol after reading SSH Mastery.