Michael W. Lucas published his new book â€œSSH Masteryâ€? (no link to an online store, get it from your preferred online or offline one in your part of the world).
Do you think you know a lot about SSH? I thought I did when Michael searched technical proof-readers for this book. I offered to have a look at his work in progress and he gently accepted (while I do not get money for this, I am one of the persons he thanks forÂ the technical review in the beginning, so I am involved somehow and as such you should take the following with a grain of salt).
I already had user restrictions in place before the review, but now I narrowed down some restrictions based upon some conditionals. I already used SSH tunnels for various things before (where legally applicable), but I learned some additional VPN techniques with SSH. I already used multiple ssh-keys for various things, but Michael provides some interesting ways of handling a large-volume of ssh-keys over multiple machines. â€¦ I really hope that my review was as valuable for Michael, as it was for me to do the review.
He ends the book with â€œYou now know more about SSH, OpenSSH and Putty than the vast majority of IT professionals! Congratulationsâ€?, and this is true, and all that in his writing style where you can come with a problem, read about it, and leave with a solution (normally with a little bit of entertainment in between).
I know a lot of people which work daily with SSH, and they know only a small part of what is presented in this book. In my opinion this book is a must-have for every System/Database/Application/Whatever Administrator in charge of something on an UNIX-like system, and even â€œnormal usersâ€? of SSH (no matter if they use PuTTY, or a ssh command line program on an UNIX-like system (most probably it will be OpenSSH or a clone of it)) will get some helpful information from this book.
I can only recommend it.