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<!-- retain these comments for translator revision tracking -->
<!-- $Id$ -->
<sect2 arch="not-s390" id="PPP">
<title>Setting Up PPP</title>
<para>
If no network was configured during the first stage of the installation,
you will next be asked whether you wish to install the rest of the system
using PPP. PPP is a protocol used to establish dialup connections with modems.
If you configure the modem at this point, the installation system will be able
to download additional packages or security updates from the Internet during
the next steps of the installation.
If you don't have a modem in your computer or if you prefer to configure
your modem after the installation, you can skip this step.
</para><para>
In order to configure your PPP connection, you will need some information
from your Internet Service Provider (ISP), including phone number, username,
password and DNS servers (optional). Some ISPs provide installation guidelines
for Linux distributions. You can use that information even if they don't
specifically target Debian since most of the configuration parameters
(and software) is similar amongst Linux distributions.
</para><para>
If you do choose to configure PPP at this point, a program named
<command>pppconfig</command> will be run. This program helps you
configure your PPP connection. <emphasis>Make sure, when it asks you
for the name of your dialup connection, that you name it
<userinput>provider</userinput>.</emphasis>
</para><para>
Hopefully, the <command>pppconfig</command> program will walk you
through a trouble-free PPP connection setup. However, if it does not
work for you, see below for detailed instructions.
</para><para>
In order to setup PPP, you'll need to know the basics of file viewing
and editing in GNU/Linux. To view files, you should use
<command>more</command>, and <command>zmore</command> for compressed
files with a <userinput>.gz</userinput> extension. For example, to
view <filename>README.debian.gz</filename>, type <userinput>zmore
README.debian.gz</userinput>. The base system comes with an editor
named <command>nano</command>, which is very simple to use, but does
not have a lot of features. You will probably want to install more
full-featured editors and viewers later, such as
<command>jed</command>, <command>nvi</command>,
<command>less</command>, and <command>emacs</command>.
</para><para>
Edit <filename>/etc/ppp/peers/provider</filename> and replace
<userinput>/dev/modem</userinput> with
<userinput>/dev/ttyS<replaceable>#</replaceable></userinput> where
<replaceable>#</replaceable> stands for the number of your serial
port. In Linux, serial ports are counted from 0; your first serial
port <phrase arch="i386">(i.e., <userinput>COM1</userinput>)</phrase>
is <filename>/dev/ttyS0</filename> under Linux.
<phrase arch="powerpc;m68k">On Macintoshes with serial ports, the
modem port is <filename>/dev/ttyS0</filename> and the printer port is
<filename>/dev/ttyS1</filename>.</phrase>
The next step is to edit
<filename>/etc/chatscripts/provider</filename> and insert your
provider's phone number, your user-name and password. Please do not
delete the <quote>\q</quote> that precedes the password. It hides the
password from appearing in your log files.
</para><para>
Many providers use PAP or CHAP for login sequence instead of text mode
authentication. Others use both. If your provider requires PAP or
CHAP, you'll need to follow a different procedure. Comment out
everything below the dialing string (the one that starts with
<quote>ATDT</quote>) in
<filename>/etc/chatscripts/provider</filename>, modify
<filename>/etc/ppp/peers/provider</filename> as described above, and
add <userinput>user <replaceable>name</replaceable></userinput> where
<replaceable>name</replaceable> stands for your user-name for the
provider you are trying to connect to. Next, edit
<filename>/etc/ppp/pap-secrets</filename> or
<filename>/etc/ppp/chap-secrets</filename> and enter your password
there.
</para><para>
You will also need to edit <filename>/etc/resolv.conf</filename> and
add your provider's name server (DNS) IP addresses. The lines in
<filename>/etc/resolv.conf</filename> are in the following format:
<userinput>nameserver
<replaceable>xxx.xxx.xxx.xxx</replaceable></userinput> where the
<replaceable>x</replaceable>s stand for numbers in your IP
address. Optionally, you could add the
<userinput>usepeerdns</userinput> option to the
<filename>/etc/ppp/peers/provider</filename> file, which will enable
automatic choosing of appropriate DNS servers, using settings the
remote host usually provides.
</para><para>
Unless your provider has a login sequence different from the majority
of ISPs, you are done! Start the PPP connection by typing
<command>pon</command> as root, and monitor the process using
<command>plog</command> command. To disconnect, use
<command>poff</command>, again, as root.
</para><para>
Read <filename>/usr/share/doc/ppp/README.Debian.gz</filename> file for
more information on using PPP on Debian.
</para><para>
For static SLIP connections, you will need to add the
<userinput>slattach</userinput> command (from the
<classname>net-tools</classname> package) into
<filename>/etc/init.d/network</filename>. Dynamic SLIP will require
the <classname>gnudip</classname> package.
</para>
<sect3 id="PPPOE">
<title>Setting Up PPP over Ethernet (PPPOE)</title>
<para>
PPPOE is a protocol related to PPP used for some broadband connections.
There is currently no support in base configuration to help you set
this up. However, the necessary software has been installed, which means
you can configure PPPOE manually at this stage of the installation by
switching to VT2 and running <command>pppoeconf</command>.
</para>
</sect3>
</sect2>
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