diff --git a/Manuals/Tcpi-ug/Configurations/Ppp/modem-server.docbook b/Manuals/Tcpi-ug/Configurations/Ppp/modem-server.docbook
index 244bb74..b54b202 100644
--- a/Manuals/Tcpi-ug/Configurations/Ppp/modem-server.docbook
+++ b/Manuals/Tcpi-ug/Configurations/Ppp/modem-server.docbook
@@ -1,9 +1,179 @@
-<sect1 id="configurations-ppp-modem-server">
+<sect1 id="configurations-ppp-server">
- <title>Server Configuration</title>
+ <title>The Server Computer</title>
+
+ <sect2 id="configurations-ppp-server-install">
+ <title>Installation</title>
+
+ <para>
+ Start with a minimal installation of &TCD;, bootup the
+ operating system, and login as root user. Later, install the
+ <quote>Dialup Networking Support</quote> group of packages
+ available in the <code>[base]</code> repository of &TCD;. The
+ installation of this group of packages is required both in
+ server and client computers. If you don't have this group of
+ packages installed in your computer, then you can do it as the
+ following command describes:
+ </para>
+
+ <screen>yum groupinstall "Dialup Networking Support"</screen>
+
+ <para>
+ Other packages might be required based on whether you are
+ configuring the computer to be a server or a client. The
+ implementation described in this chapter considers both a
+ server and client configuration so you can pick up the one
+ fitting your case.
+ </para>
+
+ <sect3 id="configurations-ppp-server-dns">
+ <title>Name Server</title>
+ <para>
+ The name server provides the software required to translate
+ domain names into IP address and IP addresses into domain
+ names. With this software you can rembember addresses like
+ <ulink url="https://projects.centos.org/" /> instead of addresses like
+ <ulink url="https://192.168.0.1/" />. There are other
+ feautres (e.g., mail exchanger resolution, zone delegation,
+ etc.) provided by this software that aren't used in the
+ point-to-point configuration we describe in this chapter.
+ </para>
+ <para>
+ To install this software, run the following command:
+ </para>
+ <screen>yum install bind</screen>
+ <note>
+ <para>
+ There is a <package>bind-chroot</package> packages, however,
+ we aren't using it because SELinux is already enforced on the
+ &TCD; filesystem and it provides far more security than the
+ idea of <package>bind-chroot</package> package itself does.
+ </para>
+ </note>
+ </sect3>
+
+ <sect3 id="configurations-ppp-server-mail">
+ <title>Mail Server</title>
+ <para>
+ The mail server provides the software required to let you
+ send/receive e-mail messages to/from others. The mail server
+ is splitted in three basic components: The Mail Transfer Agent
+ (<package>postfix</package>), The Mail Delivery Agent
+ (<package>Cyrus-Imapd</package>) and an intermediary daemon
+ named <systemitem class="daemon">saslauthd</systemitem> to
+ handle users' authentication. The mail transfer agent is the
+ program your e-mail client sends e-mail messages to. The mail
+ delivery agent, on the other hand, is the program your e-mail
+ client reads e-mail message from (i.e., this is the place
+ where your mailbox is stored in). The authentication daemon
+ is used by the mail delivery agent to authenticate user's
+ credentials (e.g., the information that let you access an
+ specific mailbox).
+ </para>
+
+ <para>
+ To install this software, run the following command:
+ </para>
+
+ <screen>yum install postfix cyrus-imapd cyrus-sasl</screen>
+
+ <para>
+ By default, the <application>sendmail</application>
+ program is used as mail transfer agent, not postfix. For the
+ sake of that point-to-point configuration we are implementing,
+ I decided to use postfix instead as default mail transfer
+ agent, not sendmail. To effectively achieve this decition, it
+ is required to use the <command>alternatives</command>
+ command, as it shown below:
+ </para>
+
+ <screen>alternatives --config mta</screen>
<para>
- ...
+ This command will present you a menu to chose between
+ available mail transfer agents, so it is there where you
+ choose to use posfix as default option. Now that you've
+ changed postfix the default mail transfer agent, you can
+ saftly remove the sendmail package to avoid unused software
+ to remain inside the computer. To do this, you can run the
+ following command:
</para>
+ <screen>yum remove sendmail</screen>
+
+ <para>
+ In addition to mail server specific packages, we also provide
+ mailing list support. Mailing lists provide e-mail addresses
+ that users registered inside the ISP can write to. When you
+ sed an e-mail to a mailing list, your message is distributed to
+ all members of that list. In order for this to happen, people
+ registered inside ISP need to subscribe themselves into that
+ mailing list they want to receive messages from. The
+ subscription of mailinglist will be available through a secured
+ web application in the following url:
+ </para>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ <ulink url="https://projects.centos.org/lists/" />
+ </para>
+ </listitem>
+ </itemizedlist>
+
+ <para>
+ To install the mailing list software, run the following
+ command:
+ </para>
+
+ <screen>yum install mailman</screen>
+ </sect3>
+
+ <sect3 id="configurations-ppp-server-web">
+ <title>Web Server</title>
+ <para>
+ The web server provides the software required to support web
+ interfaces like those one previously mention to register new
+ users inside the ISP and subscribe mailing lists. The web
+ server provided in this configuration will accept requests
+ both unencrypted and encrypted.
+ </para>
+
+ <screen>yum install httpd mod_ssl crypto-utils</screen>
+
+ <para>
+ In addition to mailing lists support, the web server will
+ provide access to Subversion. Subvesion provides a way to
+ manage files through version control. The main purpose of
+ providing Subversion support here is sharing the version of
+ &TCAR; I've been working on. To install Subversion software,
+ run the following command: </para>
+
+ <screen>yum install subversion mod_dav_svn</screen>
+
+ </sect3>
+
+ <sect3 id="configurations-ppp-server-ldap">
+ <title>Directory Server</title>
+ <para>
+ The directory server provides the software required to unify
+ user information. This server is access by other server
+ whenever user information is required. You, as end user, can
+ also use this server from your workstation to retrive a list
+ of all users registered in the ISP. This list can be retrived
+ by the web interface the ISP provides, or any application your
+ workstation provide (e.g., most e-mail clients provide a way
+ to configure LDAP servers to build address book from it.).
+ </para>
+
+ <para>
+ To install the directory server sofware, run the following
+ command:
+ </para>
+
+ <screen>yum openldap-servers python-ldap</screen>
+
+ </sect3>
+ </sect2>
+
</sect1>