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Linux Server Security, Second Edition
book

Linux Server Security, Second Edition

by Michael D. Bauer
January 2005
Intermediate to advanced content levelIntermediate to advanced
544 pages
23h 44m
English
O'Reilly Media, Inc.
Content preview from Linux Server Security, Second Edition
This is the Title of the Book, eMatter Edition
Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved.
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Chapter 4: Secure Remote Administration
much of the stuff we fling over networks as possible, we leverage this flexibility as
fully as we can.
Getting and Installing OpenSSH
Nowadays, OpenSSH is a standard package on all Linux distributions: it’s that
important. Accordingly, the simplest way to get OpenSSH is to install it from your
Linux CD-ROMs. Just be sure to also check your distribution’s web site for updates,
or run your distribution’s online-update tool (e.g., apt-get, yast2, up2date, etc.) to
make sure you’re using your distribution’s newest OpenSSH package. OpenSSH has
had some serious security vulnerabilities over the years.
OpenSSH’s official web site is http://www.openssh.com. This is the place to go for the
very latest version of OpenSSH, both in source-code and RPM forms, and also for
OpenSSL, which is required by OpenSSH. Also required is zlib, available at http://
www.zlib.net.
You may or may not get by with RPM packages, depending mainly on whether the
RPMs you wish to install were created for your distribution. (Mandrake, Red Hat,
SUSE, and a number of other distributions can use RPMs, but not always
interchangeably.) If for some reason your distribution doesn’t provide its own
OpenSSH RPMs, even in a “contrib.” (end-user contributed) directory, you’re best
off compiling ...
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Publisher Resources

ISBN: 0596006705Supplemental ContentCatalog PageErrata