source: postlfs/security/security.xml@ 7915966

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Last change on this file since 7915966 was 7915966, checked in by Larry Lawrence <larry@…>, 18 years ago

redo shadow intro and fix some error from today

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@1234 af4574ff-66df-0310-9fd7-8a98e5e911e0

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File size: 1.3 KB
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[f45b1953]1<chapter id="postlfs-security">
2<?dbhtml filename="security.html" dir="postlfs"?>
3<title>Security</title>
4
[e1d7dec]5<para>Security takes many forms in a computing environment. This chapter
[419dd50]6gives examples of three different types of security: access, prevention
[cf7ae162]7and detection.</para>
8
9<para>Access for users is usually handled by <command>login</command> or an
10application designed to handle the login function. In this chapter, we show
11how to enhance <command>login</command> by setting policies with
[e1d7dec]12<application><acronym>PAM</acronym></application> modules. Access via networks
[cf7ae162]13can also be secured by policies set by <application>iptables</application>,
14commonly referred to as a firewall.</para>
15
16<para>Prevention of breaches, like a trojan, are assisted by applications like
[419dd50]17<application>GnuPG</application>, specifically the ability to confirm signed
[cf7ae162]18packages, which prevents modification of the tarball after the packager creates
19it.</para>
20
21<para> Finally, we touch on detection with a package that stores "signatures"
22of critical files (defined by the administrator) and then regenerates those
[e1d7dec]23"signatures" and compares for files that have been changed.</para>
24
25&Linux_PAM;
[7915966]26&shadow;
[f45b1953]27&iptables;
28&postlfs-security-fw;
[e1d7dec]29&gnupg;
[ce2adc3]30&tripwire;
[cf7ae162]31<!--&postlfs-security-syslog;-->
[f45b1953]32
33</chapter>
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