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   5   <title>Petter Reinholdtsen: entries from May 2010</title>
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  13   <h1>
  14        <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  15
  16   </h1>
  17
  18  </div>
  19
  20  <p>Entries from May 2010.</p>
  21
  22
  23 <div class="entry">
  24  <div class="title">
  25  <a href="http://people.skolelinux.org/pere/blog/Forcing_new_users_to_change_their_password_on_first_login.html">Forcing new users to change their password on first login</a>
  26  </div>
  27  <div class="date">
  28   2010-05-02 13:47
  29  </div>
  30
  31  <div class="body">
  32
  33 <p>One interesting feature in Active Directory, is the ability to
  34 create a new user with an expired password, and thus force the user to
  35 change the password on the first login attempt.</p>
  36
  37 <p>I'm not quite sure how to do that with the LDAP setup in Debian
  38 Edu, but did some initial testing with a local account.  The account
  39 and password aging information is available in /etc/shadow, but
  40 unfortunately, it is not possible to specify an expiration time for
  41 passwords, only a maximum age for passwords.</p>
  42
  43 <p>A freshly created account (using adduser test) will have these
  44 settings in /etc/shadow:</p>
  45
  46 <blockquote><pre>
  47 root@tjener:~# chage -l test
  48 Last password change                                    : May 02, 2010
  49 Password expires                                        : never
  50 Password inactive                                       : never
  51 Account expires                                         : never
  52 Minimum number of days between password change          : 0
  53 Maximum number of days between password change          : 99999
  54 Number of days of warning before password expires       : 7
  55 root@tjener:~#
  56 </pre></blockquote>
  57
  58 <p>The only way I could come up with to create a user with an expired
  59 account, is to change the date of the last password change to the
  60 lowest value possible (January 1th 1970), and the maximum password age
  61 to the difference in days between that date and today.  To make it
  62 simple, I went for 30 years (30 * 365 = 10950) and January 2th (to
  63 avoid testing if 0 is a valid value).</p>
  64
  65 <p>After using these commands to set it up, it seem to work as
  66 intended:</p>
  67
  68 <blockquote><pre>
  69 root@tjener:~# chage -d 1 test; chage -M 10950 test
  70 root@tjener:~# chage -l test
  71 Last password change                                    : Jan 02, 1970
  72 Password expires                                        : never
  73 Password inactive                                       : never
  74 Account expires                                         : never
  75 Minimum number of days between password change          : 0
  76 Maximum number of days between password change          : 10950
  77 Number of days of warning before password expires       : 7
  78 root@tjener:~#
  79 </pre></blockquote>
  80
  81 <p>So far I have tested this with ssh and console, and kdm (in
  82 Squeeze) login, and all ask for a new password before login in the
  83 user (with ssh, I was thrown out and had to log in again).</p>
  84
  85 <p>Perhaps we should set up something similar for Debian Edu, to make
  86 sure only the user itself have the account password?</p>
  87
  88 <p>If you want to comment on or help out with implementing this for
  89 Debian Edu, please contact us on debian-edu@lists.debian.org.</p>
  90
  91 <p>Update 2010-05-02 17:20: Paul Tötterman tells me on IRC that the
  92 shadow(8) page in Debian/testing now state that setting the date of
  93 last password change to zero (0) will force the password to be changed
  94 on the first login.  This was not mentioned in the manual in Lenny, so
  95 I did not notice this in my initial testing.  I have tested it on
  96 Squeeze, and '<tt>chage -d 0 username</tt>' do work there.  I have not
  97 tested it on Lenny yet.</p>
  98
  99 <p>Update 2010-05-02-19:05: Jim Paris tells me via email that an
 100 equivalent command to expire a password is '<tt>passwd -e
 101 username</tt>', which insert zero into the date of the last password
 102 change.</p>
 103
 104  </div>
 105  <div class="tags">
 106
 107
 108
 109   Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
 110
 111  </div>
 112 </div>
 113  <div class="padding"></div>
 114
 115 <div class="entry">
 116  <div class="title">
 117  <a href="http://people.skolelinux.org/pere/blog/Parallellizing_the_boot_in_Debian_Squeeze___ready_for_wider_testing.html">Parallellizing the boot in Debian Squeeze - ready for wider testing</a>
 118  </div>
 119  <div class="date">
 120   2010-05-06 23:25
 121  </div>
 122
 123  <div class="body">
 124
 125 <p>These days, the init.d script dependencies in Squeeze are quite
 126 complete, so complete that it is actually possible to run all the
 127 init.d scripts in parallell based on these dependencies.  If you want
 128 to test your Squeeze system, make sure
 129 <a href="http://wiki.debian.org/LSBInitScripts/DependencyBasedBoot">dependency
 130 based boot sequencing</a> is enabled, and add this line to
 131 /etc/default/rcS:</p>
 132
 133 <blockquote><pre>
 134 CONCURRENCY=makefile
 135 </pre></blockquote>
 136
 137 <p>That is it.  It will cause sysv-rc to use the startpar tool to run
 138 scripts in parallel using the dependency information stored in
 139 /etc/init.d/.depend.boot, /etc/init.d/.depend.start and
 140 /etc/init.d/.depend.stop to order the scripts.  Startpar is configured
 141 to try to start the kdm and gdm scripts as early as possible, and will
 142 start the facilities required by kdm or gdm as early as possible to
 143 make this happen.</p>
 144
 145 <p>Give it a try, and see if you like the result.  If some services
 146 fail to start properly, it is most likely because they have incomplete
 147 init.d script dependencies in their startup script (or some of their
 148 dependent scripts have incomplete dependencies).  Report bugs and get
 149 the package maintainers to fix it. :)</p>
 150
 151 <p>Running scripts in parallel could be the default in Debian when we
 152 manage to get the init.d script dependencies complete and correct.  I
 153 expect we will get there in Squeeze+1, if we get manage to test and
 154 fix the remaining issues.</p>
 155
 156 <p>If you report any problems with dependencies in init.d scripts to
 157 the BTS, please usertag the report to get it to show up at
 158 <a href="http://bugs.debian.org/cgi-bin/pkgreport.cgi?users=initscripts-ng-devel@lists.alioth.debian.org">the
 159 list of usertagged bugs related to this</a>.</p>
 160
 161  </div>
 162  <div class="tags">
 163
 164
 165
 166   Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 167
 168  </div>
 169 </div>
 170  <div class="padding"></div>
 171
 172  <p style="text-align: right;"><a href="05.rss"><img src="http://people.skolelinux.org/pere/blog/xml.gif" alt="RSS Feed" width="36" height="14"></a></p>
 173
 174
 175
 176 <div id="sidebar">
 177
 178 <h2>Archive</h2>
 179 <ul>
 180
 181 <li>2010
 182 <ul>
 183
 184 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 185
 186 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 187
 188 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 189
 190 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 191
 192 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (2)</a></li>
 193
 194 </ul></li>
 195
 196 <li>2009
 197 <ul>
 198
 199 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 200
 201 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 202
 203 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 204
 205 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 206
 207 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 208
 209 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 210
 211 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 212
 213 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 214
 215 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 216
 217 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 218
 219 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 220
 221 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 222
 223 </ul></li>
 224
 225 <li>2008
 226 <ul>
 227
 228 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 229
 230 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 231
 232 </ul></li>
 233
 234 </ul>
 235
 236
 237
 238 <h2>Tags</h2>
 239 <ul>
 240
 241  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (11)</a></li>
 242
 243  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 244
 245  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 246
 247  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (15)</a></li>
 248
 249  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (15)</a></li>
 250
 251  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (25)</a></li>
 252
 253  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (1)</a></li>
 254
 255  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (6)</a></li>
 256
 257  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (2)</a></li>
 258
 259  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (1)</a></li>
 260
 261  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 262
 263  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (5)</a></li>
 264
 265  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (64)</a></li>
 266
 267  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (71)</a></li>
 268
 269  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (12)</a></li>
 270
 271  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (11)</a></li>
 272
 273  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (10)</a></li>
 274
 275  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 276
 277  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (7)</a></li>
 278
 279  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (11)</a></li>
 280
 281  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (1)</a></li>
 282
 283  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (10)</a></li>
 284
 285  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (1)</a></li>
 286
 287  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (6)</a></li>
 288
 289 </ul>
 290
 291 </div>
 292 </body>
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