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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta name="generator" content="HTML Tidy, see www.w3.org" /><title>Using PPP over ATM (PPPoA)</title><meta name="GENERATOR" content="Modular DocBook HTML Stylesheet Version 1.7" /><link rel="HOME" title="FreeBSD Handbook" href="index.html" /><link rel="UP" title="PPP and SLIP" href="ppp-and-slip.html" /><link rel="PREVIOUS" title="Using PPP over Ethernet (PPPoE)" href="pppoe.html" /><link rel="NEXT" title="Using SLIP" href="slip.html" /><link rel="STYLESHEET" type="text/css" href="docbook.css" /></head><body class="SECT1" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#840084"alink="#0000FF"><div class="NAVHEADER"><table summary="Header navigation table" width="100%" border="0" cellpadding="0"cellspacing="0"><tr><th colspan="3" align="center">FreeBSD Handbook</th></tr><tr><td width="10%" align="left" valign="bottom"><a href="pppoe.html"accesskey="P">Prev</a></td><td width="80%" align="center" valign="bottom">Chapter 21 PPP and SLIP</td><td width="10%" align="right" valign="bottom"><a href="slip.html"accesskey="N">Next</a></td></tr></table><hr align="LEFT" width="100%" /></div><div class="SECT1"><h1 class="SECT1"><a id="PPPOA" name="PPPOA">21.6 Using <b class="APPLICATION">PPP</b>over ATM (PPPoA)</a></h1><p>The following describes how to set up PPP over ATM (PPPoA). PPPoA is a popular choiceamong European DSL providers.</p><div class="SECT2"><h2 class="SECT2"><a id="AEN31125" name="AEN31125">21.6.1 Using PPPoA with the Alcatel<span class="TRADEMARK">SpeedTouch</span>&#8482; USB</a></h2><p>PPPoA support for this device is supplied as a port in FreeBSD because the firmware isdistributed under <a href="http://www.speedtouchdsl.com/disclaimer_lx.htm"target="_top">Alcatel's license agreement</a> and can not be redistributed freely withthe base system of FreeBSD.</p><p>To install the software, simply use the <a href="ports.html">ports collection</a>.Install the <a href="http://www.FreeBSD.org/cgi/url.cgi?ports/net/pppoa/pkg-descr"><ttclass="FILENAME">net/pppoa</tt></a> port and follow the instructions provided withit.</p><p>Like many USB devices, the Alcatel <span class="TRADEMARK">SpeedTouch</span>&#8482;USB needs to download firmware from the host computer to operate properly. It is possibleto automate this process in FreeBSD so that this transfer takes place whenever the deviceis plugged into a USB port. The following information can be added to the <ttclass="FILENAME">/etc/usbd.conf</tt> file to enable this automatic firmware transfer.This file must be edited as the <tt class="USERNAME">root</tt> user.</p><pre class="PROGRAMLISTING">device "Alcatel SpeedTouch USB"    devname "ugen[0-9]+"    vendor 0x06b9    product 0x4061    attach "/usr/local/sbin/modem_run -f /usr/local/libdata/mgmt.o"</pre><p>To enable the USB daemon, <b class="APPLICATION">usbd</b>, put the following the lineinto <tt class="FILENAME">/etc/rc.conf</tt>:</p><pre class="PROGRAMLISTING">usbd_enable="YES"</pre><p>It is also possible to set up <b class="APPLICATION">ppp</b> to dial up at startup. Todo this add the following lines to <tt class="FILENAME">/etc/rc.conf</tt>. Again, forthis procedure you will need to be logged in as the <tt class="USERNAME">root</tt>user.</p><pre class="PROGRAMLISTING">ppp_enable="YES"ppp_mode="ddial"ppp_profile="adsl"</pre><p>For this to work correctly you will need to have used the sample <ttclass="FILENAME">ppp.conf</tt> which is supplied with the <ahref="http://www.FreeBSD.org/cgi/url.cgi?ports/net/pppoa/pkg-descr"><ttclass="FILENAME">net/pppoa</tt></a> port.</p></div><div class="SECT2"><h2 class="SECT2"><a id="AEN31150" name="AEN31150">21.6.2 Using mpd</a></h2><p>You can use <b class="APPLICATION">mpd</b> to connect to a variety of services, inparticular PPTP services. You can find <b class="APPLICATION">mpd</b> in the portscollection, <a href="http://www.FreeBSD.org/cgi/url.cgi?ports/net/mpd/pkg-descr"><ttclass="FILENAME">net/mpd</tt></a>. Many ADSL modems require that a PPTP tunnel is createdbetween the modem and computer, one such modem is the Alcatel <spanclass="TRADEMARK">SpeedTouch</span> Home.</p><p>First you must install the port, and then you can configure <bclass="APPLICATION">mpd</b> to suit your requirements and provider settings. The portplaces a set of sample configuration files which are well documented in <ttclass="FILENAME"><var class="REPLACEABLE">PREFIX</var>/etc/mpd/</tt>. Note here that <varclass="REPLACEABLE">PREFIX</var> means the directory into which your ports are installed,this defaults to <tt class="FILENAME">/usr/local/</tt>. A complete guide to configure <bclass="APPLICATION">mpd</b> is available in HTML format once the port has been installed.It is placed in <tt class="FILENAME"><varclass="REPLACEABLE">PREFIX</var>/share/doc/mpd/</tt>. Here is a sample configuration forconnecting to an ADSL service with <b class="APPLICATION">mpd</b>. The configuration isspread over two files, first the <tt class="FILENAME">mpd.conf</tt>:</p><pre class="PROGRAMLISTING">default:    load adsladsl:    new -i ng0 adsl adsl    set bundle authname <var class="REPLACEABLE">username</var> <a id="CO-MPD-EX-USER"name="CO-MPD-EX-USER"><img src="./imagelib/callouts/1.png" hspace="0" vspace="0"border="0" alt="(1)" /></a>    set bundle password <var class="REPLACEABLE">password</var> <a id="CO-MPD-EX-PASS"name="CO-MPD-EX-PASS"><img src="./imagelib/callouts/2.png" hspace="0" vspace="0"border="0" alt="(2)" /></a>    set bundle disable multilink        set link no pap acfcomp protocomp    set link disable chap    set link accept chap    set link keep-alive 30 10        set ipcp no vjcomp    set ipcp ranges 0.0.0.0/0 0.0.0.0/0        set iface route default    set iface disable on-demand    set iface enable proxy-arp    set iface idle 0    open</pre><div class="CALLOUTLIST"><dl compact="COMPACT"><dt><a href="pppoa.html#CO-MPD-EX-USER"><img src="./imagelib/callouts/1.png" hspace="0"vspace="0" border="0" alt="(1)" /></a></dt><dd>The username used to authenticate with your ISP.</dd><dt><a href="pppoa.html#CO-MPD-EX-PASS"><img src="./imagelib/callouts/2.png" hspace="0"vspace="0" border="0" alt="(2)" /></a></dt><dd>The password used to authenticate with your ISP.</dd></dl></div><p>The <tt class="FILENAME">mpd.links</tt> file contains information about the link, orlinks, you wish to establish. An example <tt class="FILENAME">mpd.links</tt> to accompanythe above example is given beneath:</p><pre class="PROGRAMLISTING">adsl:    set link type pptp    set pptp mode active    set pptp enable originate outcall    set pptp self <var class="REPLACEABLE">10.0.0.1</var> <a id="CO-MPD-EX-SELF"name="CO-MPD-EX-SELF"><img src="./imagelib/callouts/1.png" hspace="0" vspace="0"border="0" alt="(1)" /></a>    set pptp peer <var class="REPLACEABLE">10.0.0.138</var> <a id="CO-MPD-EX-PEER"name="CO-MPD-EX-PEER"><img src="./imagelib/callouts/2.png" hspace="0" vspace="0"border="0" alt="(2)" /></a></pre><div class="CALLOUTLIST"><dl compact="COMPACT"><dt><a href="pppoa.html#CO-MPD-EX-SELF"><img src="./imagelib/callouts/1.png" hspace="0"vspace="0" border="0" alt="(1)" /></a></dt><dd>The IP address of your FreeBSD computer which you will be using <bclass="APPLICATION">mpd</b> from.</dd><dt><a href="pppoa.html#CO-MPD-EX-PEER"><img src="./imagelib/callouts/2.png" hspace="0"vspace="0" border="0" alt="(2)" /></a></dt><dd>The IP address of your ADSL modem. For the Alcatel <spanclass="TRADEMARK">SpeedTouch</span> Home this address defaults to <ttclass="HOSTID">10.0.0.138</tt>.</dd></dl></div><p>It is possible to initialize the connection easily by issuing the following command as<tt class="USERNAME">root</tt>:</p><pre class="SCREEN"><samp class="PROMPT">#</samp> <kbd class="USERINPUT">mpd -b <varclass="REPLACEABLE">adsl</var></kbd></pre><p>You can see the status of the connection with the following command:</p><pre class="SCREEN"><samp class="PROMPT">%</samp> <kbd class="USERINPUT">ifconfig <varclass="REPLACEABLE">ng0</var></kbd>ng0: flags=88d1&lt;UP,POINTOPOINT,RUNNING,NOARP,SIMPLEX,MULTICAST&gt; mtu 1500     inet 216.136.204.117 --&#62; 204.152.186.171 netmask 0xffffffff</pre><p>Using <b class="APPLICATION">mpd</b> is the recommended way to connect to an ADSLservice with FreeBSD.</p></div><div class="SECT2"><h2 class="SECT2"><a id="AEN31207" name="AEN31207">21.6.3 Using pptpclient</a></h2><p>It is also possible to use FreeBSD to connect to other PPPoA services using <ahref="http://www.FreeBSD.org/cgi/url.cgi?ports/net/pptpclient/pkg-descr"><ttclass="FILENAME">net/pptpclient</tt></a>.</p><p>To use <a href="http://www.FreeBSD.org/cgi/url.cgi?ports/net/pptpclient/pkg-descr"><ttclass="FILENAME">net/pptpclient</tt></a> to connect to a DSL service, install the port orpackage and edit your <tt class="FILENAME">/etc/ppp/ppp.conf</tt>. You will need to be<tt class="USERNAME">root</tt> to perform both of these operations. An example section of<tt class="FILENAME">ppp.conf</tt> is given below. For further information on <ttclass="FILENAME">ppp.conf</tt> options consult the <b class="APPLICATION">ppp</b> manualpage, <a href="http://www.FreeBSD.org/cgi/man.cgi?query=ppp&sektion=8"><spanclass="CITEREFENTRY"><span class="REFENTRYTITLE">ppp</span>(8)</span></a>.</p><pre class="PROGRAMLISTING">adsl: set log phase chat lcp ipcp ccp tun command set timeout 0 enable dns set authname <var class="REPLACEABLE">username</var> <a id="CO-PPTP-EX-USER"name="CO-PPTP-EX-USER"><img src="./imagelib/callouts/1.png" hspace="0" vspace="0"border="0" alt="(1)" /></a> set authkey <var class="REPLACEABLE">password</var> <a id="CO-PPTP-EX-PASS"name="CO-PPTP-EX-PASS"><img src="./imagelib/callouts/2.png" hspace="0" vspace="0"border="0" alt="(2)" /></a> set ifaddr 0 0 add default HISADDR</pre><div class="CALLOUTLIST"><dl compact="COMPACT"><dt><a href="pppoa.html#CO-PPTP-EX-USER"><img src="./imagelib/callouts/1.png" hspace="0"vspace="0" border="0" alt="(1)" /></a></dt><dd>The username of your account with the DSL provider.</dd><dt><a href="pppoa.html#CO-PPTP-EX-PASS"><img src="./imagelib/callouts/2.png" hspace="0"vspace="0" border="0" alt="(2)" /></a></dt><dd>The password for your account.</dd></dl></div><div class="WARNING"><blockquote class="WARNING"><p><b>Warning:</b> Because you must put your account's password in the <ttclass="FILENAME">ppp.conf</tt> file in plain text form you should make sure than nobodycan read the contents of this file. The following series of commands will make sure thefile is only readable by the <tt class="USERNAME">root</tt> account. Refer to the manualpages for <a href="http://www.FreeBSD.org/cgi/man.cgi?query=chmod&sektion=1"><spanclass="CITEREFENTRY"><span class="REFENTRYTITLE">chmod</span>(1)</span></a> and <ahref="http://www.FreeBSD.org/cgi/man.cgi?query=chown&sektion=8"><spanclass="CITEREFENTRY"><span class="REFENTRYTITLE">chown</span>(8)</span></a> for furtherinformation.</p><pre class="SCREEN"><samp class="PROMPT">#</samp> <kbdclass="USERINPUT">chown root:wheel /etc/ppp/ppp.conf</kbd><samp class="PROMPT">#</samp> <kbd class="USERINPUT">chmod 600 /etc/ppp/ppp.conf</kbd></pre></blockquote></div><p>This will open a tunnel for a PPP session to your DSL router. Ethernet DSL modems havea preconfigured LAN IP address which you connect to. In the case of the Alcatel <spanclass="TRADEMARK">SpeedTouch</span> Home this address is <ttclass="HOSTID">10.0.0.138</tt>. Your router documentation should tell you which addressyour device uses. To open the tunnel and start a PPP session execute the followingcommand:</p><pre class="SCREEN"><samp class="PROMPT">#</samp> <kbd class="USERINPUT">pptp <varclass="REPLACEABLE">address</var> <var class="REPLACEABLE">adsl</var></kbd></pre><div class="TIP"><blockquote class="TIP"><p><b>Tip:</b> You may wish to add an ampersand (``&amp;'') to the end of the previouscommand because <b class="APPLICATION">pptp</b> will not return your prompt to youotherwise.</p></blockquote></div><p>A <tt class="DEVICENAME">tun</tt> virtual tunnel device will be created forinteraction between the <b class="APPLICATION">pptp</b> and <bclass="APPLICATION">ppp</b> processes. Once you have been returned to your prompt, or the<b class="APPLICATION">pptp</b> process has confirmed a connection you can examine thetunnel like so:</p><pre class="SCREEN"><samp class="PROMPT">%</samp> <kbd class="USERINPUT">ifconfig <varclass="REPLACEABLE">tun0</var></kbd>tun0: flags=8051&lt;UP,POINTOPOINT,RUNNING,MULTICAST&gt; mtu 1500        inet 216.136.204.21 --&#62; 204.152.186.171 netmask 0xffffff00         Opened by PID 918</pre><p>If you are unable to connect, check the configuration of your router, which is usuallyaccessible via <b class="APPLICATION">telnet</b> or with a web browser. If you stillcannot connect you should examine the output of the <tt class="COMMAND">pptp</tt> commandand the contents of the <b class="APPLICATION">ppp</b> log file, <ttclass="FILENAME">/var/log/ppp.log</tt> for clues.</p></div></div><div class="NAVFOOTER"><hr align="LEFT" width="100%" /><table summary="Footer navigation table" width="100%" border="0" cellpadding="0"cellspacing="0"><tr><td width="33%" align="left" valign="top"><a href="pppoe.html"accesskey="P">Prev</a></td><td width="34%" align="center" valign="top"><a href="index.html"accesskey="H">Home</a></td><td width="33%" align="right" valign="top"><a href="slip.html"accesskey="N">Next</a></td></tr><tr><td width="33%" align="left" valign="top">Using PPP over Ethernet (PPPoE)</td><td width="34%" align="center" valign="top"><a href="ppp-and-slip.html"accesskey="U">Up</a></td><td width="33%" align="right" valign="top">Using SLIP</td></tr></table></div><p align="center"><small>This, and other documents, can be downloaded from <ahref="ftp://ftp.FreeBSD.org/pub/FreeBSD/doc/">ftp://ftp.FreeBSD.org/pub/FreeBSD/doc/</a>.</small></p><p align="center"><small>For questions about FreeBSD, read the <ahref="http://www.FreeBSD.org/docs.html">documentation</a> before contacting &#60;<ahref="mailto:questions@FreeBSD.org">questions@FreeBSD.org</a>&#62;.<br />For questions about this documentation, e-mail &#60;<ahref="mailto:doc@FreeBSD.org">doc@FreeBSD.org</a>&#62;.</small></p></body></html>
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