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  1. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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  2. "http://www.w3.org/TR/html4/loose.dtd">
    3. 

  3. <html>
    4. 

  4. <head>
    5. 

  5. <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    6. 

  6. <title>Poptop MSCHAP2 ADS Howto</title>
    7. 

  7. </head>
    8. 

  8. 

  9. <body>
    10. 

  10. <h3>PopTop + MSCHAPv2 + Samba + Radius + Microsoft Active Directory + Fedora Howto</h3>
    11. 

  11. <p align="left">Copyright &copy; 2005-2009 Wing S Kwok </p>
    12. 

  12. <p align="right">by: Wing S Kwok<br>
    13. 

  13.   email: wskwok18 (at) gmail.com</p>
    14. 

  14. <p align="left"><strong>Revision History</strong>:</p>
    15. 

  15. <dl>
    16. 

  16.   <dt>Release 1.5 - 22 March 2009</dt>
    17. 

  17.   <dd>- Added a section on how to retrict one connection per user</dd>
    18. 

  18.   <br>
    19. 

  19.   <dt>Release 1.4 - 30 September 2008</dt>
    20. 

  20.   <dd>- Updated information of the Howto to focus on Fedora 8</dd>
    21. 

  21.   <dd>- Moved FC5/FC6 specific information to Appendix</dd>
    22. 

  22.   <br>
    23. 

  23.   <dt>Release 1.3 - 19 May 2007</dt>
    24. 

  24.   <dd>- Added info on potential problem of  selinux on pptpd </dd>
    25. 

  25.   <dd>- Added info to build rpm from pptpd tar ball</dd>
    26. 

  26.   <dd>- Updated version information of software</dd>
    27. 

  27.   <br>
    28. 

  28.   <dt>Release 1.21 - 23 February 2007</dt>
    29. 

  29.   <dd>- Fixed up typo in dictionary.microsoft</dd>
    30. 

  30.   <br>
    31. 

  31.   <dt>Release 1.2 - 15 January 2007</dt>
    32. 

  32.   <dd>- Added Fedora Core 6 information</dd>
    33. 

  33.   <br>
    34. 

  34.   <dt>Release 1.1 - 25 September 2006</dt>
    35. 

  35.   <dd>- Updated version information on kernel, samba and pptpd</dd>
    36. 

  36.   <br>
    37. 

  37.   <dt>Release 1.0 - 7 May 2006</dt>
    38. 

  38.   <dd>- Updated the Howto to focus on Fedora Core 5</dd>
    39. 

  39.   <dd>- Rearranged the order of steps to make the walkthrough more logical</dd>
    40. 

  40.   <dd>- Moved Fedora Core 4 specific info to Appendix</dd>
    41. 

  41.     <br>
    42. 

  42.   <dt>Release 0.8 - 5 March 2006</dt>
    43. 

  43.   <dd>- Updated information on pptpd, samba version</dd>
    44. 

  44.   <dd>- Updated information on FC4 kernel version</dd>
    45. 

  45.   <dd>- Added info on changing MTU size</dd>
    46. 

  46.       <br>
    47. 

  47.   <dt>Release 0.71 - 3 February 2006</dt>
    48. 

  48.   <dd>- Problem with kernel 2.6.15 and ppp-2.4.3-5 is Gentoo specific. Corrected the document.</dd>
    49. 

  49. 	  <br>
    50. 

  50.   <dt>Release 0.7 -- 1 February 2006</dt>
    51. 

  51.       <dd>- Section 12.2 has been rewritten.</dd>
    52. 

  52. 	  <dd>- Updated information on Samba version.</dd>
    53. 

  53. 	  <dd>- Provided a link to information on problem with kernel 2.6.15 and ppp-2.4.3-5</dd>
    54. 

  54.       <br>
    55. 

  55.   <dt>Release 0.6 -- 5 January 2006</dt>
    56. 

  56.       <dd>- Added a new section on pptp server administration.</dd>
    57. 

  57.       <dd>- Updated information on Samba version. </dd>
    58. 

  58.       <br>
    59. 

  59.   <dt>Release 0.5 -- 17 November 2005</dt>
    60. 

  60.       <dd>- Included info on kernel 2.6.15-rc1 and MPPE support</dd><br>
    61. 

  61.   <dt>Release 0.4 -- 30 October 2005</dt>
    62. 

  62.       <dd>- Updated kernel-ppp-mppe version number</dd><br>
    63. 

  63.   <dt>Release 0.3 -- 23 October 2005</dt>
    64. 

  64.       <dd>- added the Acknowledgements section</dd>
    65. 

  65. 	  <dd>- added information on problem with FC4 2.6.13 kernel and mppe kernel module </dd>
    66. 

  66.       <dd>- added information on kernel upgrade and dkms_autoinstaller</dd>
    67. 

  67.       <dd>- added information on pptp access control</dd>
    68. 

  68. 	  <dd>- updated the software version info to reflect the latest available version</dd><br>
    69. 

  69.   <dt>Release 0.2 -- 23 September 2005</dt>
    70. 

  70.       <dd>- Rewrote part of the pptp client configuration section and included split tunneling information.</dd><br>
    71. 

  71.   <dt>Release 0.1 -- 12 September 2005</dt>
    72. 

  72.       <dd>- added Kerberos version information</dd>
    73. 

  73.       <dd>- added the full path of winbindd_privileged directory</dd>
    74. 

  74.       <dd>- fixed the VBScript which had a few lines missing</dd>
    75. 

  75.       <dd>- corrected a few typos </dd>
    76. 

  76. </dl>
    77. 

  77. <dl>
    78. 

  78.    <dt>First Release -- 5 September 2005</dt>
    79. 

  79. </dl>
    80. 

  80. <p align="left">This document covers how to integrate Poptop with Microsoft Active Directory on Fedora 8. Two different implementations are described: a) winbind; and b) freeradius.</p>
    81. 

  81. <hr>
    82. 

  82. <a name="toc"></a>Table of Contents
    83. 

  83. <dl><dt>1. <a href="#introduction">Introduction</a></dt>
    84. 

  84.     <dt>2. <a href="#disclaimer">Disclaimer</a></dt>
    85. 

  85. 	<dt>3. <a href="#acknowledgement">Acknowledgements</a></dt>
    86. 

  86.     <dt>4. <a href="poptop_ads_howto_2.htm">The Test Environment</a></dt>
    87. 

  87. 	<dt>5. <a href="poptop_ads_howto_3.htm#selinux">Fedora and SELINUX</a></dt>
    88. 

  88.     <dt>6. <a href="poptop_ads_howto_3.htm#network">Network Configuration</a></dt>
    89. 

  89.     <dd>6.1 <a href="poptop_ads_howto_3.htm#defaultroute">Default Route and Static Routes</a></dd>
    90. 

  90. 	<dd>6.2 <a href="poptop_ads_howto_3.htm#pforward">Enable Packet Forwarding</a></dd>
    91. 

  91.     <dt>7. <a href="poptop_ads_howto_4.htm#mppe">Install MPPE Kernel Module</a></dt>
    92. 

  92. 	<dt>8. <a href="poptop_ads_howto_4.htm#pppd_pptpd">pppd and  pptpd</a></dt>
    93. 

  93.     <dd>8.1 <a href="poptop_ads_howto_4.htm#pppd">pppd</a></dd>
    94. 

  94.     <dd>8.2 <a href="poptop_ads_howto_4.htm#pptpd">Install pptpd</a></dd>
    95. 

  95. 	<dt>9. <a href="poptop_ads_howto_5.htm">Samba</a></dt>
    96. 

  96.     <dd>9.1 <a href="poptop_ads_howto_5.htm#smbconf">Configure Samba</a></dd>
    97. 

  97. 	<dt>10. <a href="poptop_ads_howto_6.htm">Kerberos</a></dt>
    98. 

  98. 	<dd>10.1 <a href="poptop_ads_howto_6.htm#krbconf">Configure Kerberos</a></dd>
    99. 

  99. 	<dd>10.2 <a href="poptop_ads_howto_6.htm#krbtest">Test Kerberos</a></dd>
    100. 

  100.     <dt>11. <a href="poptop_ads_howto_6a.htm#smbjoin">Join the AD Domain</a></dt>
    101. 

  101.   <dt>12. <a href="poptop_ads_howto_7.htm">pptpd and winbindd</a></dt>
    102. 

  102.   <dd>12.1 <a href="poptop_ads_howto_7.htm#wbtest">Enable and Test winbindd</a></dd>
    103. 

  103.   <dd>12.2 <a href="poptop_ads_howto_7.htm#pptpconf">Configure pptpd</a></dd>
    104. 

  104.   <dd>12.3 <a href="poptop_ads_howto_7.htm#access">PPTP Access Control</a></dd>
    105. 

  105.   <dt>13. <a href="poptop_ads_howto_8.htm">Software for Radius Setup</a></dt>
    106. 

  106.   <dt>14. <a href="poptop_ads_howto_8.htm#rclient">Radiusclient</a></dt>
    107. 

  107.   <dd>14.1 <a href="poptop_ads_howto_8.htm#rclientconf">radiusclient.conf</a></dd>
    108. 

  108.   <dd>14.2 <a href="poptop_ads_howto_8.htm#dict">dictionary.microsoft</a></dd>
    109. 

  109.   <dt>15. <a href="poptop_ads_howto_9.htm">Freeradius</a></dt>
    110. 

  110.   <dd>15.1 <a href="poptop_ads_howto_9.htm#mschap2">Configure Freeradius for MSCHAPv2</a></dd>
    111. 

  111.   <dd>15.2 <a href="poptop_ads_howto_9.htm#access">PPTP Access Control</a></dd>
    112. 

  112.   <dt>16. <a href="poptop_ads_howto_10.htm">pptpd and freeradius</a></dt>
    113. 

  113.   <dd>16.1 <a href="poptop_ads_howto_10.htm#radiusd">Enable freeradius</a></dd>
    114. 

  114.   <dd>16.2 <a href="poptop_ads_howto_10.htm#pptpdradius">Configure pptpd</a></dd>
    115. 

  115.   <dt>17. <a href="poptop_ads_howto_11.htm">pptp Client Installation</a></dt>
    116. 

  116.   <dd>17.1 <a href="poptop_ads_howto_11.htm#splittunnel">Split Tunneling</a></dd>
    117. 

  117.   <dt>18. <a href="poptop_ads_howto_12.htm">pptp Server Administration </a></dt>
    118. 

  118.   <dd>18.1 <a href="poptop_ads_howto_12.htm#whoisonline">Who is Online?</a></dd>
    119. 

  119.   <dd>18.2 <a href="poptop_ads_howto_12.htm#accounting">Accounting</a></dd>
    120. 

  120.   <dd>18.3 <a href="poptop_ads_howto_12.htm#disconnect">Disconnect a User</a></dd>
    121. 

  121.   <dd>18.4 <a href="poptop_ads_howto_12.htm#oneconnection">Allow One Connection per User </a></dd>
    122. 

  122.   <dt>A1. <a href="poptop_ads_howto_a1.htm#mppe">Install MPPE Module on Fedora Core 4 / 5 / 6 </a></dt>
    123. 

  123.   <dd>A1.1 <a href="poptop_ads_howto_a1.htm#a11_fc56">Fedora Core 5 / 6</a></dd>
    124. 

  124.   <dd>A1.2 <a href="poptop_ads_howto_a1.htm#a12_fc4">Fedora Core 4</a></dd>
    125. 

  125.   <dd>A1.3 <a href="poptop_ads_howto_a1.htm#autoinstaller">Kernel Upgrade and dkms_autoinstaller</a></dd>
    126. 

  126.   <dt>A2. <a href="poptop_ads_howto_a2.htm#pppd">Update pppd on Fedora Core 4 / 5 / 6 </a></dt>
    127. 

  127.   <dd>A2.1 <a href="poptop_ads_howto_a2.htm#fc56_pppd">Fedora Core 5 / 6</a></dd>
    128. 

  128.   <dd>A2.2 <a href="ppptop_ads_howto_a2.htm#f4_pppd">Fedora Core 4</a></dd>
    129. 

  129.   <dt>A3. <a href="poptop_ads_howto_a3.htm#samba">Samba for Fedora Core 4 / 5 / 6</a></dt>
    130. 

  130.   <dd>A3.1 <a href="poptop_ads_howto_a3.htm#fc56_samba">Fedora Core 5 / 6</a></dd>
    131. 

  131.   <dd>A3.2 <a href="poptop_ads_howto_a3.htm#fc4_samba">Fedora Core 4</a></dd>
    132. 

  132.   <dt>A4. <a href="poptop_ads_howto_a4.htm#a4freeradius">Software for Radius Setup on Fedora Core 4 / 5 / 6</a></dt>
    133. 

  133.   <dd>A4.1 <a href="poptop_ads_howto_a4.htm#fc56_freeradius">Fedora Core 5 / 6</a></dd>
    134. 

  134.   <dd>A4.2 <a href="poptop_ads_howto_a4.htm#fc4_freeradius">Fedora Core 4</a></dd>
    135. 

  135.   <dt>A5. <a href="poptop_ads_howto_a5.htm">Radiusclient Configuration for Fedora 4 / 5 / 6</a></dt>
    136. 

  136.   <dd>A5.1 <a href="poptop_ads_howto_a5.htm#rclientconf">radiusclient.conf</a></dd>
    137. 

  137.   <dd>A5.2 <a href="poptop_ads_howto_a5.htm#dict">dicitonary.microsoft</a></dd>
    138. 

  138.   <dt>A6. <a href="poptop_ads_howto_a6.htm">Configure Freeradius for MSCHAP2 on Fedora 4 / 5 / 6</a></dt>
    139. 

  139. </dl>
    140. 

  140. 

  141. <hr>
    142. 

  142. <strong><a name="introduction"></a>1. Introduction</strong>
    143. 

  143. <p>This document descibes how to  build a Linux PPTP server with Poptop and use Microsoft Active Directory to authenticate users. There are a few howtos on this topic, such as the <a href="http://poptop.sourceforge.net/dox/replacing-windows-pptp-with-linux-howto.phtml">Replacing a Windows PPTP Server with Linux Howto</a> created by Matt Alexander and maintained by James Cameron. Most of them, however, concentrate on Samba and winbind. I followed them and got it working in the test environment. Unfortunately, winbind does not scale very well in a AD setup which has thousands of objects. The AD in my work is a big tree. It spans across all continents and has thousands of users and groups. Winbind simply times out before it can harvest a complete list of users/groups.</p>
    144. 

  144. <p align="left">The other way of doing it is with radius. Information on how to setup pptpd with radius against Active Directory is scarce. I can only find bits and pieces information from forums but never find any comprehensive documents. I spent days to try to get it configured properly. After countless frustrations and tears, I eventually got a working setup. I therefore decided to make this howto to document it. Hopefully, you will find it useful.</p>
    145. 

  145. <p align="left">To make this howto complete, I include the winbind configuration as well although it may duplicate Matt's work.</p>
    146. 

  146. <dt align="left"><strong>Note</strong>:</dt> 
    147. 

  147. <dd>- this howto is based on Fedora 8 and use pre-packaged RPMs whenever possible. If you are using other distributions or like to compile software, you will have to make the necessary adjustments.</dt>
    148. 

  148. <dd>- Information for Fedora Core 4/5/6 has been moved to Appendix and will not be updated anymore. </dd>
    149. 

  149. <br>
    150. 

  150. <hr>
    151. 

  151. <strong><a name="disclaimer"></a>2. Disclaimer</strong>
    152. 

  152. <p>This document is provided as is. I have tried my best to make it as accurate as I can but it may contain wrong information. Use it at your own risk. </dd>
    153. 

  153. <p>Any comments on this document will be greatly appreciated.. </p>
    154. 

  154. <hr>
    155. 

  155. <a name="acknowledgement"></a><strong>3. Acknowledgements
    156. 

  156. </strong>
    157. 

  157. <p>Thanks to the following individuals who provided feedback and suggestions to make this document better.</p>
    158. 

  158. <blockquote>
    159. 

  159.   <p>Peter Mueller - suggested to add information on Kerberos version (R0.1) <br>
    160. 

  160.     Francis Lessard - provided details on implementing pptp access control (R0.3)<br>
    161. 

  161.     James Cameron - provided info on MPPE support on kernel v2.6.15-rc1 (R0.5) <br>
    162. 

  162. 	Phil Oester - pointed out the kernel-2.6.15/ppp-2.4.3-5 problem is Gentoo specific (R0.71)<br>
    163. 

  163. 	Nicolas Ross - pointed out typo in dictionary.microsoft (R1.21)<br>
    164. 

  164. 	Frederick Chapleau - info on the potential problem of SELINUX on PPTPD (R1.3) </p>
    165. 

  165. </blockquote>
    166. 

  166. <hr>
    167. 

  167. 

  168. <a href="poptop_ads_howto_2.htm">Next</a>
    169. 

  169. &nbsp;&nbsp;<a href="#toc">Content</a>
    170. 

  170. 

  171. </body>
    172. 

  172. </html>
    173.