Secure your computer network with SSH! With transparent, strong encryption, reliable public-key authentication, and a highly configurable client/server architecture, SSH (Secure Shell) is a popular, robust, TCP/IP-based solution to many network security and privacy concerns. It supports secure remote logins, secure file transfer between computers, and a unique "tunneling" capability that adds encryption to otherwise insecure network applications. Best of all, SSH is free, with feature-filled commercial versions available as well.SSH: The Secure Shell: The Definitive Guide covers the Secure Shell in detail for both system administrators and end users. It demystifies the SSH man pages and includes thorough coverage of:
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The suite of utility applications that Unix users and administrators find indispensable--Telnet, rlogin, FTP, and the rest--can in fact prove to be the undoing of interconnected systems. The Secure Shell, a.k.a. SSH (which isn't a true shell at all) provides your otherwise attack-prone utilities with the protection they need. SSH: The Secure Shell: The Definitive Guide explains how to use SSH at all levels. In a blended sequence, the book explains what SSH is all about, how it fits into a larger security scheme, and how to employ it as an everyday user with an SSH client. More technically detailed chapters show how to configure a SSH server--several variants are covered--and how to integrate SSH with non-Unix client platforms.
As befits its detail- and variation-rich subject, this book comprises many specialized sections, each dealing with some specific aspect of use or configuration (setting up access control at the account level, for example, or generating keys for a particular SSH server). The writing is both informative and fun to read; the authors switch back and forth between text and entry-and-response listings from SSH machines. They often run through a half-dozen or more variants on the same command in a few pages, providing the reader with lots of practical information. The discussion of how SSH fits into a Kerberos Public Key Infrastructure (PKI) is great, as is the advice on defeating particular kinds of attacks. --David Wall
Dan Barrett has been immersed in Internet technology since 1985. Currently working as a software engineer, Dan has also been a heavy metal singer, Unix system administrator, university lecturer, web designer, and humorist. He has written several O'Reilly books, as well as monthly columns for Compute! and Keyboard Magazine. Dan and his family reside in Boston.
Richard E. Silverman has a B.A. in computer science and an M.A. in pure mathematics. Richard has worked in the fields of networking, formal methods in software development, public-key infrastructure, routing security, and Unix systems administration. He is the co-author of SSH, The Secure Shell: The Definitive Guide.
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