mirror of
https://github.com/Zeckmathederg/glfs.git
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7f76b96b42
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@3632 af4574ff-66df-0310-9fd7-8a98e5e911e0
249 lines
9.5 KiB
XML
249 lines
9.5 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY tripwire-download-http "http://www.frenchfries.net/paul/tripwire/tripwire-&tripwire-version;.tar.gz">
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<!ENTITY tripwire-download-ftp " ">
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<!ENTITY tripwire-md5sum "02610d0593fe04d35d809ff6c5becc02">
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<!ENTITY tripwire-size "869 KB">
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<!ENTITY tripwire-buildsize "22 MB">
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<!ENTITY tripwire-time "2.96 SBU">
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]>
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<sect1 id="tripwire-portable" xreflabel="Tripwire-&tripwire-version;">
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<sect1info>
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<othername>$LastChangedBy$</othername>
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<date>$Date$</date>
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</sect1info>
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<?dbhtml filename="tripwire.html"?>
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<title>Tripwire-&tripwire-version;</title>
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<indexterm zone="tripwire-portable">
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<primary sortas="a-Tripwire">Tripwire</primary>
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</indexterm>
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<sect2>
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<title>Introduction to <application>Tripwire</application></title>
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<para>The <application>Tripwire</application> package contains programs used
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to verify the integrity of the files on a given system.</para>
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<sect3><title>Package information</title>
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<itemizedlist spacing='compact'>
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<listitem><para>Download (HTTP): <ulink
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url="&tripwire-download-http;"/></para></listitem>
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<listitem><para>Download (FTP): <ulink
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url="&tripwire-download-ftp;"/></para></listitem>
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<listitem><para>Download MD5 sum: &tripwire-md5sum;</para></listitem>
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<listitem><para>Download size: &tripwire-size;</para></listitem>
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<listitem><para>Estimated disk space required:
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&tripwire-buildsize;</para></listitem>
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<listitem><para>Estimated build time:
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&tripwire-time;</para></listitem></itemizedlist>
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</sect3>
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<sect3><title><application>Tripwire</application> dependencies</title>
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<sect4><title>Optional</title>
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<para><acronym>MTA</acronym> (See <xref linkend="server-mail"/>)</para>
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</sect4>
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</sect3>
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</sect2>
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<sect2>
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<title>Installation of <application>Tripwire</application></title>
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<para>Compile <application>Tripwire</application> by running the following
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commands:</para>
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<screen><userinput><command>sed -i -e 's@TWDB="${prefix}@TWDB="/var@' install/install.cfg &&
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./configure --prefix=/usr --sysconfdir=/etc/tripwire &&
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make</command></userinput></screen>
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<para>Now, as the root user:</para>
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<screen><userinput role='root'><command>make install &&
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cp policy/*.txt /usr/share/doc/tripwire</command></userinput></screen>
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<para>The default configuration is to use a local <acronym>MTA</acronym>. If
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you don't have an <acronym>MTA</acronym> installed and have no wish to install
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one, modify <filename>install.cfg</filename> to use an <acronym>SMTP</acronym>
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server instead.</para>
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</sect2>
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<sect2>
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<title>Command explanations</title>
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<para><command>sed -i -e 's@TWDB="${prefix}@TWDB="/var@'
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install/install.cfg</command>: This command tells the package to install the
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program database and reports in
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<filename>/var/lib/tripwire</filename>.</para>
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<para><command>make install</command>: This command creates the
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<application>Tripwire</application> security keys as well as installing the
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binaries. There are two keys: a site key and a local key which are stored in
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<filename class="directory">/etc/tripwire/</filename>.</para>
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<para><command>cp policy/*.txt /usr/share/doc/tripwire</command>: This command
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installs the documentation.</para>
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</sect2>
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<sect2>
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<title>Configuring <application>Tripwire</application></title>
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<sect3 id="tripwire-config"><title>Config files</title>
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<para><filename>/etc/tripwire/*</filename></para>
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<indexterm zone="tripwire-portable tripwire-config">
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<primary sortas="e-etc-tripwire">/etc/tripwire/*</primary>
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</indexterm>
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</sect3>
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<sect3><title>Configuration Information</title>
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<para><application>Tripwire</application> uses a policy file to determine which
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files are integrity checked. The default policy file
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(<filename>/etc/tripwire/twpol.txt</filename>) is for a default
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installation Redhat and will need to be updated for your system.</para>
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<para>Policy files should be tailored to each individual distribution and/or
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installation. Some custom policy files can be found below: </para>
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<screen><ulink url="http://home.iprimus.com.au/glombowski/blfs/twpol-all.txt"/>
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Checks integrity of all files
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<ulink url="http://home.iprimus.com.au/glombowski/blfs/twpol-lfs.txt"/>
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Custom policy file for Base LFS 3.0 system
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<ulink url="http://home.iprimus.com.au/glombowski/blfs/twpol-suse7.2.txt"/>
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Custom policy file for SuSE 7.2 system</screen>
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<para>Download the custom policy file you'd like to try, copy it into
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<filename class="directory">/etc/tripwire/</filename>, and use it instead of
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<filename>twpol.txt</filename>. It is, however, recommended that you make
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your own policy file. Get ideas from the examples above and read
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<filename>/usr/share/doc/tripwire/policyguide.txt</filename> for additional
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information. <filename>twpol.txt</filename> is a good policy file for beginners
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as it will note any changes to the file system and can even be used as an
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annoying way of keeping track of changes for uninstallation of software.</para>
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<para>After your policy file has been transferred to
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<filename class="directory">/etc/tripwire/</filename> you may begin the
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configuration steps:</para>
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<screen><userinput role='root'><command>twadmin --create-polfile --site-keyfile /etc/tripwire/site.key \
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/etc/tripwire/twpol.txt &&
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tripwire --init</command></userinput></screen>
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</sect3>
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<sect3><title>Usage Information</title>
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<para>To use <application>Tripwire</application> after creating a policy file
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to run a report, use the following command:</para>
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<screen><userinput role='root'><command>tripwire --check > /etc/tripwire/report.txt</command></userinput></screen>
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<para>View the output to check the integrity of your files. An automatic
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integrity report can be produced by using a cron facility to schedule
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the runs.</para>
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<para>Please note that after you run an integrity check, you must examine
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the report (or email) and then modify the <application>Tripwire</application>
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database to reflect the changed files on your system. This is so that
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<application>Tripwire</application> will not continually notify you that
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files you intentionally changed are a security violation. To do this you
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must first <command>ls -l /var/lib/tripwire/report/</command> and note
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the name of the newest file which starts with <filename>linux-</filename> and
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ends in <filename>.twr</filename>. This encrypted file was created during the
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last report creation and is needed to update the
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<application>Tripwire</application> database of your
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system. Then, type in the following command making the appropriate
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substitutions for <replaceable>[?]</replaceable>:</para>
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<screen><userinput role='root'><command>tripwire --update -twrfile \
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/var/lib/tripwire/report/linux-<replaceable>[???????]</replaceable>-<replaceable>[??????]</replaceable>.twr</command></userinput></screen>
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<para>You will be placed into <application>vim</application> with a copy of
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the report in front of you. If all the changes were good, then just type
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<command>:x</command> and after entering your local key, the database will be
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updated. If there are files which you still want to be warned about, remove the
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'x' before the filename in the report and type <command>:x</command>.</para>
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</sect3>
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<sect3><title>Changing the Policy File</title>
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<para>If you are unhappy with your policy file and would like to modify it or
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use a new one, modify the policy file and then execute the following
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commands:</para>
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<screen><userinput role='root'><command>twadmin --create-polfile /etc/tripwire/twpol.txt &&
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tripwire --init</command></userinput></screen>
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</sect3>
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</sect2>
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<sect2>
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<title>Contents</title>
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<segmentedlist>
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<segtitle>Installed Programs</segtitle>
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<segtitle>Installed Libraries</segtitle>
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<segtitle>Installed Directories</segtitle>
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<seglistitem>
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<seg>siggen, tripwire, twadmin and twprint.</seg>
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<seg>None</seg>
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<seg>/etc/tripwire, /usr/share/doc/tripwire and /var/lib/tripwire</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<varlistentry id="siggen">
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<term><command>siggen</command></term>
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<listitem><para>is a signature gathering utility that displays
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the hash function values for the specified files.</para>
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<indexterm zone="tripwire-portable siggen">
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<primary sortas="b-siggen">siggen</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id='tripwire'>
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<term><command>tripwire</command></term>
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<listitem><para>is the main file integrity checking program.</para>
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<indexterm zone="tripwire-portable tripwire">
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<primary sortas="b-tripwire">tripwire</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id='twadmin'>
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<term><command>twadmin</command></term>
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<listitem><para>administrative and utility tool used to perform
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certain administrative functions related to
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<application>Tripwire</application> files and configuration
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options.</para>
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<indexterm zone="tripwire-portable twadmin">
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<primary sortas="b-twadmin">twadmin</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id='twprint'>
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<term><command>twprint</command></term>
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<listitem><para>prints <application>Tripwire</application>
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database and report files in clear text format.</para>
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<indexterm zone="tripwire-portable twprint">
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<primary sortas="b-twprint">twprint</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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</sect1>
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