Index: postlfs/security/stunnel-systemd.xml
===================================================================
--- postlfs/security/stunnel-systemd.xml	(revision 0e389d1320287a6a94b77935f5159779f4ca1be7)
+++ postlfs/security/stunnel-systemd.xml	(revision 0e389d1320287a6a94b77935f5159779f4ca1be7)
@@ -0,0 +1,325 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
+  <!ENTITY % general-entities SYSTEM "../../general.ent">
+  %general-entities;
+
+  <!ENTITY stunnel-download-http "http://mirrors.zerg.biz/stunnel/stunnel-&stunnel-version;.tar.gz">
+  <!ENTITY stunnel-download-ftp  "ftp://ftp.stunnel.org/stunnel/stunnel-&stunnel-version;.tar.gz">
+  <!ENTITY stunnel-md5sum        "827901cd4690796eadf17f792b658573">
+  <!ENTITY stunnel-size          "584 KB">
+  <!ENTITY stunnel-buildsize     "5.7 MB">
+  <!ENTITY stunnel-time          "0.1 SBU">
+]>
+
+<sect1 id="stunnel" xreflabel="stunnel-&stunnel-version;">
+  <?dbhtml filename="stunnel.html"?>
+
+  <sect1info>
+    <othername>$LastChangedBy$</othername>
+    <date>$Date$</date>
+  </sect1info>
+
+  <title>stunnel-&stunnel-version;</title>
+
+  <indexterm zone="stunnel">
+    <primary sortas="a-stunnel">stunnel</primary>
+  </indexterm>
+
+  <sect2 role="package">
+    <title>Introduction to stunnel</title>
+
+    <para>The <application>stunnel</application> package contains a program
+    that allows you to encrypt arbitrary TCP connections inside SSL (Secure
+    Sockets Layer) so you can easily communicate with clients over secure
+    channels. <application>stunnel</application> can be used to add SSL
+    functionality to commonly used <application>Inetd</application> daemons
+    like POP-2, POP-3, and IMAP servers, to standalone daemons like NNTP,
+    SMTP and HTTP, and in tunneling PPP over network sockets without changes
+    to the server package source code.</para>
+
+    &lfs76_checked;
+
+    <bridgehead renderas="sect3">Package Information</bridgehead>
+    <itemizedlist spacing="compact">
+      <listitem>
+        <para>Download (HTTP): <ulink url="&stunnel-download-http;"/></para>
+      </listitem>
+      <listitem>
+        <para>Download (FTP): <ulink url="&stunnel-download-ftp;"/></para>
+      </listitem>
+      <listitem>
+        <para>Download MD5 sum: &stunnel-md5sum;</para>
+      </listitem>
+      <listitem>
+        <para>Download size: &stunnel-size;</para>
+      </listitem>
+      <listitem>
+        <para>Estimated disk space required: &stunnel-buildsize;</para>
+      </listitem>
+      <listitem>
+        <para>Estimated build time: &stunnel-time;</para>
+      </listitem>
+    </itemizedlist>
+
+    <bridgehead renderas="sect3">stunnel Dependencies</bridgehead>
+
+    <bridgehead renderas="sect4">Required</bridgehead>
+    <para role="required">
+      <xref linkend="openssl"/>
+    </para>
+
+    <bridgehead renderas="sect4">Optional</bridgehead>
+    <para role="optional">
+      <ulink url="ftp://ftp.porcupine.org/pub/security/">tcpwrappers</ulink>
+    </para>
+
+    <para condition="html" role="usernotes">User Notes:
+    <ulink url="&blfs-wiki;/stunnel"/></para>
+
+  </sect2>
+
+  <sect2 role="installation">
+    <title>Installation of stunnel</title>
+
+    <para>The <command>stunnel</command> daemon will be run in a
+    <command>chroot</command> jail by an unprivileged user. Create the
+    new user and group using the following commands as the
+    <systemitem class="username">root</systemitem> user:</para>
+
+<screen role="root"><userinput>groupadd -g 51 stunnel &amp;&amp;
+useradd -c "stunnel Daemon" -d /var/lib/stunnel \
+        -g stunnel -s /bin/false -u 51 stunnel</userinput></screen>
+
+    <note>
+      <para>A signed SSL Certificate and a Private Key is necessary to run the
+      <command>stunnel</command> daemon.  Further below, after
+      <command>make ... install</command>, we include instructions to generate
+      them. However, if you own, or have already created a signed SSL
+      Certificate you wish to use, copy it to
+      <filename>/etc/stunnel/stunnel.pem</filename> before starting the build
+      (ensure only <systemitem class="username">root</systemitem> has read and
+      write access).  The <filename class="extension">.pem</filename> file must
+      be formatted as shown below:</para>
+
+<screen><literal>-----BEGIN PRIVATE KEY-----
+<replaceable>&lt;many encrypted lines of private key&gt;</replaceable>
+-----END PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
+<replaceable>&lt;many encrypted lines of certificate&gt;</replaceable>
+-----END CERTIFICATE-----
+-----BEGIN DH PARAMETERS-----
+<replaceable>&lt;encrypted lines of dh parms&gt;</replaceable>
+-----END DH PARAMETERS-----</literal></screen>
+    </note>
+
+    <para>
+      Fix the bundled systemd unit so it does not use a deprecated dependency:
+    </para>
+
+<screen><userinput>sed -i /syslog.target/d tools/stunnel.service.in</userinput></screen>
+
+    <para>Install <application>stunnel</application> by running the following
+    commands:</para>
+
+<screen><userinput>./configure --prefix=/usr \
+            --sysconfdir=/etc \
+            --localstatedir=/var &amp;&amp;
+make</userinput></screen>
+
+    <para>This package does not come with a test suite.</para>
+
+    <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
+
+<screen role="root"><userinput>make docdir=/usr/share/doc/stunnel-&stunnel-version; install</userinput></screen>
+
+    <para>
+      Install the systemd unit by running the following command as the
+      <systemitem class="username">root</systemitem> user:
+    </para>
+
+<screen role="root"><userinput>install -v -m644 tools/stunnel.service /lib/systemd/system/stunnel.service</userinput></screen>
+
+    <para>To create the <filename>stunnel.pem</filename> in the
+    <filename class="directory">/etc/stunnel</filename> directory, 
+    you need to create one.   The following command prompts you
+    for the necessary information. Ensure you reply to the</para>
+    
+<screen><prompt>Common Name (FQDN of your server) [localhost]:</prompt></screen>
+
+    <para>prompt with the name or IP address you will be using
+    to access the service(s).</para>
+
+    <para>To generate a certificate, as the 
+    <systemitem class="username">root</systemitem> user, run:</para>
+
+<screen role="root"><userinput>make cert</userinput></screen>
+
+  </sect2>
+
+  <sect2 role="commands">
+    <title>Command Explanations</title>
+
+    <para><command>make docdir=... install</command>: This command installs the
+    package, changes the documentation installation directory to standard
+    naming conventions.</para>
+
+  </sect2>
+
+  <sect2 role="configuration">
+    <title>Configuring stunnel</title>
+
+    <sect3 id="stunnel-config">
+      <title>Config Files</title>
+
+      <para><filename>/etc/stunnel/stunnel.conf</filename></para>
+
+      <indexterm zone="stunnel stunnel-config">
+        <primary sortas="e-etc-stunnel-stunnel.conf">/etc/stunnel/stunnel.conf</primary>
+      </indexterm>
+
+    </sect3>
+
+    <sect3>
+      <title>Configuration Information</title>
+
+      <para>As the <systemitem class="username">root</systemitem> user,
+      create the directory used for the
+      <filename class="extension">.pid</filename> file that is created
+      when the <application>stunnel</application> daemon starts:</para>
+
+<screen role="root"><userinput>install -v -m750 -o stunnel -g stunnel -d /var/lib/stunnel/run &amp;&amp;
+chown stunnel:stunnel /var/lib/stunnel</userinput></screen>
+
+      <para>Next, create a basic <filename>/etc/stunnel/stunnel.conf</filename>
+      configuration file using the following commands as the
+      <systemitem class="username">root</systemitem> user:</para>
+
+<screen role="root"><userinput>cat &gt;/etc/stunnel/stunnel.conf &lt;&lt; "EOF" &amp;&amp;
+<literal>; File: /etc/stunnel/stunnel.conf
+
+; Note: The pid and output locations are relative to the chroot location.
+
+pid    = /run/stunnel.pid
+chroot = /var/lib/stunnel
+client = no
+setuid = stunnel
+setgid = stunnel
+cert   = /etc/stunnel/stunnel.pem
+
+;debug = 7
+;output = stunnel.log
+
+;[https]
+;accept  = 443
+;connect = 80
+;; "TIMEOUTclose = 0" is a workaround for a design flaw in Microsoft SSL
+;; Microsoft implementations do not use SSL close-notify alert and thus
+;; they are vulnerable to truncation attacks
+;TIMEOUTclose = 0</literal>
+
+EOF
+chmod -v 644 /etc/stunnel/stunnel.conf</userinput></screen>
+
+      <para>Finally, you need to add the service(s) you wish to encrypt to the
+      configuration file. The format is as follows:</para>
+
+<screen><literal>[<replaceable>&lt;service&gt;</replaceable>]
+accept  = <replaceable>&lt;hostname:portnumber&gt;</replaceable>
+connect = <replaceable>&lt;hostname:portnumber&gt;</replaceable></literal></screen>
+
+      <para>If you use <application>stunnel</application> to encrypt a daemon
+      started from <command>[x]inetd</command>, you may need to disable that
+      daemon in the <filename>/etc/[x]inetd.conf</filename> file and enable a
+      corresponding <replaceable>&lt;service&gt;</replaceable>_stunnel service. You
+      may have to add an appropriate entry in <filename>/etc/services</filename>
+      as well.</para>
+
+      <para>For a full explanation of the commands and syntax used in the
+      configuration file, run <command>man stunnel</command>.</para>
+
+    </sect3>
+
+    <sect3  id="stunnel-init">
+      <title>Systemd Units</title>
+
+      <para>
+        To start the <command>stunnel</command> daemon at boot,
+        enable the previously installed systemd unit by
+        running the following command as the
+        <systemitem class="username">root</systemitem> user:
+      </para>
+
+      <indexterm zone="stunnel stunnel-init">
+        <primary sortas="f-stunnel">stunnel</primary>
+      </indexterm>
+
+<screen role="root"><userinput>systemctl enable stunnel</userinput></screen>
+
+    </sect3>
+
+  </sect2>
+
+  <sect2 role="content">
+    <title>Contents</title>
+
+    <segmentedlist>
+      <segtitle>Installed Programs</segtitle>
+      <segtitle>Installed Library</segtitle>
+      <segtitle>Installed Directories</segtitle>
+
+      <seglistitem>
+        <seg>stunnel and stunnel3</seg>
+        <seg>libstunnel.so</seg>
+        <seg>/etc/stunnel, 
+             /usr/lib/stunnel,
+             /usr/share/doc/stunnel-&stunnel-version;, and
+             /var/lib/stunnel</seg>
+      </seglistitem>
+    </segmentedlist>
+
+    <variablelist>
+      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
+      <?dbfo list-presentation="list"?>
+      <?dbhtml list-presentation="table"?>
+
+      <varlistentry id="stunnel-prog">
+        <term><command>stunnel</command></term>
+        <listitem>
+          <para> is a program designed to work as an SSL
+          encryption wrapper between remote clients and local
+          (<command>{x}inetd</command>-startable) or remote servers.</para>
+          <indexterm zone="stunnel stunnel-prog">
+            <primary sortas="b-stunnel">stunnel</primary>
+          </indexterm>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry id="stunnel3">
+        <term><command>stunnel3</command></term>
+        <listitem>
+          <para>is a <application>Perl</application> wrapper script to use
+          <command>stunnel</command> 3.x syntax with <command>stunnel</command>
+          >=4.05.</para>
+          <indexterm zone="stunnel stunnel3">
+            <primary sortas="b-stunnel3">stunnel3</primary>
+          </indexterm>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry id="libstunnel">
+        <term><filename class='libraryfile'>libstunnel.so</filename></term>
+        <listitem>
+          <para> contains the API functions required by
+          <application>stunnel</application>.</para>
+          <indexterm zone="stunnel libstunnel">
+            <primary sortas="c-libstunnel">libstunnel.so</primary>
+          </indexterm>
+        </listitem>
+      </varlistentry>
+
+    </variablelist>
+
+  </sect2>
+
+</sect1>
