Download Linux Security Cookbook by Daniel J. Barrett, Richard E. Silverman, Robert G. Byrnes PDF

By Daniel J. Barrett, Richard E. Silverman, Robert G. Byrnes

Laptop safeguard is an ongoing approach, a continuing contest among procedure directors and intruders. an excellent administrator must remain one step prior to any adversaries, which frequently includes a continuous technique of schooling. If you're grounded within the fundamentals of safeguard, despite the fact that, you won't inevitably need a entire treatise at the topic at any time when you decide up a ebook. occasionally you must get directly to the purpose. That's precisely what the hot Linux safety Cookbook does. instead of offer a complete safety resolution for Linux desktops, the authors current a chain of easy-to-follow recipes—short, concentrated items of code that directors can use to enhance safeguard and practice universal initiatives securely.

The Linux protection Cookbook comprises actual recommendations to quite a lot of detailed difficulties, equivalent to sending encrypted electronic mail inside of Emacs, proscribing entry to community providers at specific instances of day, firewalling a webserver, fighting IP spoofing, establishing key-based SSH authentication, and masses extra. With over a hundred and fifty ready-to-use scripts and configuration records, this exact ebook is helping directors safe their platforms with no need to appear up particular syntax. The booklet starts with recipes devised to set up a safe process, then strikes directly to safe daily practices, and concludes with strategies to assist your procedure remain secure.

Some of the "recipes" you'll locate during this e-book are:
• Controlling entry for your process from firewalls right down to person prone, utilizing iptables, ipchains, xinetd, inetd, and more
• tracking your community with tcpdump, dsniff, netstat, and different tools
• retaining community connections with safe Shell (SSH) and stunnel
• Safeguarding e mail classes with safe Sockets Layer (SSL)
• Encrypting records and electronic mail messages with GnuPG
• Probing your individual safeguard with password crackers, nmap, and convenient scripts

This cookbook's confirmed thoughts are derived from hard-won adventure. even if you're liable for safety on a house Linux method or for a wide company, or someplace in among, you'll locate important, to-the-point, functional recipes for facing daily safety concerns. This publication is a method saver.

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Extra info for Linux Security Cookbook

Example text

At boot time. Solution Use ipchains-restore or iptables-restore. 20 Loading a Firewall Configuration This is the Title of the Book, eMatter Edition Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved. | 43 Discussion Place the load commands in one of your system rc files. d that you can simply enable using chkconfig. final at boot time. /bin/sh # Uncomment either iptables or ipchains PROGRAM=/usr/sbin/iptables #PROGRAM=/sbin/ipchains FIREWALL=`/bin/basename $PROGRAM` RULES_FILE=/etc/sysconfig/${FIREWALL} LOADER=${PROGRAM}-restore FORWARD_BIT=/proc/sys/net/ipv4/ip_forward if [ !

See Also The Tripwire manual has detailed documentation on the policy file format. 14 Checking Windows VFAT Filesystems Problem When checking the integrity of a VFAT filesystem, tripwire always complains that files have changed when they haven’t. Solution Tell tripwire not to compare inode numbers. 14 Checking Windows VFAT Filesystems This is the Title of the Book, eMatter Edition Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved. | 17 Discussion Modern Linux kernels do not assign constant inode numbers in VFAT filesystems.

14 Checking Windows VFAT Filesystems Problem When checking the integrity of a VFAT filesystem, tripwire always complains that files have changed when they haven’t. Solution Tell tripwire not to compare inode numbers. 14 Checking Windows VFAT Filesystems This is the Title of the Book, eMatter Edition Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved. | 17 Discussion Modern Linux kernels do not assign constant inode numbers in VFAT filesystems. See Also The Tripwire manual has detailed documentation on the policy file format.

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