<HTML> <HEAD> <TITLE>Setting up a Linux PPTP Client with WinNT PPTP Server</TITLE> </HEAD> <BODY BGCOLOR="#FFFFFF"> <H1>Setting up the Linux PPTP 1.0.2 client (and PPP 2.3.5) with Windows NT PPTP Server</H1> <HR> <A NAME="aboutsys"></A> <H2>About the systems</H2> <P> This document assumes the following: <ul> <li>remote machine name = orge <li>domain remote machine belongs to = gnoll <li>username on remote machine = billybob <li>password for billybob = bobbybill </ul> We want to connect our local machine to the remote machine using PPTP. The remote machine is a <I>Windows NT</I> box while our local machine is a <I>Linux box</I>. </P> <HR> <A NAME="chapsecrets"></A> <H2>PPP chap-secrets file</H2> <P> Find the <I>chap-secrets</I> file which should be in <I>/etc/ppp/</I>. This file should look like this: </P> <P> <TABLE> <TR><TD># chap-secrets</TD></TR><TR> <TD># client</TD><TD>server</TD><TD>secret</TD><TD>IP adresses</TD></TR><TR> <TD>gnoll\\billybob</TD><TD>orge</TD><TD>bobbybill</TD><TD></TD></TR> </TABLE> </P> <HR> <A NAME="debugging"></A> <H2>Setting up PPP debugging</H2> <P> PPP debugging is handled by <I>syslogd</I>. To setup debugging open <I>syslog.conf</I> which should be found in <I>/etc/</I> and add the following entry: </P> <P> <B>daemon.debug /var/log/pppd.log</B> </P> <HR> <A NAME="launchpptp"></A> <H2>Launching PPTP</H2> <P> The following command is issued on the linux box to connect to the remote NT machine. </P> <P> <B>pptp orge debug name gnoll\\billybob remotename orge</B> </P> <HR> <A NAME="errors"></A> <H2>Errors</H2> <P> <B>E=691</B><BR> This error occurs when you supply an incorrect username/password to the remote NT machine. Check the chap-secrets file and the command line where PPTP is launched. </P> <HR> <A NAME="testing"></A> <H2>Testing</H2> <P> <ul> <li> run 'ifconfig' and check that a ppp0 interface exists <li> find P-t-P: xxx.xxx.xxx.xxx from the output of ifconfig <li> run 'netstat -i' and record the RX-OK and TX-OK values for ppp0 <li> type 'ping xxx.xxx.xxx.xxx' <li> run 'netstat -i' again and see if the values for RX and TX increased.. if yes then it would appear to be working ok....... in theory anyway. </ul> <HR> <A HREF="http://www.moretonbay.com/vpn/pptp.html">PoPToP Home Page</a> </BODY> </HTML>
