The new edition of this comprehensive guide covers SSH in detail for experienced system administrators and end users, with expanded coverage of the recent SSH-2 protocol. The book demystifies the SSH man pages and includes thorough coverage of basic to advanced use of SSH client tools for Unix, Windows, and Mac OS X. This updated edition also covers SSH Tectia for both Linux and Windows and ways to install, configure, and maintain SSH, and discusses levels of SSH server control, application tunneling, port and agent forwarding, and forced commands. Readers also find detailed case studies of creating complex applications with SSH, and troubleshooting a wide variety of common and not-so-common problems.