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Customer Review

13 of 14 people found the following review helpful
4.0 out of 5 stars Invaluable for anyone administering a Unix server, 17 Sept. 2001
By A Customer
This review is from: SSH, the Secure Shell : The Definitive Guide (Paperback)
I received a free review copy of this book from the UK Unix Users Group, but think it well worth the cover price.
SSH is a very useful collection of tools, providing secure replacements for programs such as telnet, rlogin, rsh, rcp, ftp, xon and rxterm. Any administrator concerned about passwords and other sensitive information being stolen by packet sniffers needs to be familiar with it.
Once set up SSH is generally easier to use than the less secure equivalents, but before you get to this happy state there are a number of choices to be made and hurdles to be jumped. This book is aimed primarily at the Unix system administrator or advanced Unix user and provides a huge amount of useful information.
The book starts with an introduction to the concepts of SSH, then moves on to the meat: detailed information about SSH for Unix users and administrators. Finally it discusses some implementations for Windows and Mackintosh users.
There are currently 3 main implementations of SSH for Unix: SSH1, SSH2 and the new but rapidly developing OpenSSH. They have much in common and the authors have elected to describe all three, pointing out differences as they go along. This is an ambitious approach, and inevitably adds some clutter to the text, but the authors have risen to the challenge and written an extremely clear and helpful book. They cover server administration, client configuration, and the clever port forwarding features which allow you to tunnel other protocols such as X11 and IMAP across an insecure network.
I would recommend this book to people who simply want to get SSH working as quickly as possible as well as those with an interest in cryptography.
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A Customer