$apt-get install apache2 trac libapache2-mod-python

Quick and dirty apache configuration
{{{
$ cat /etc/apache2/sites-enabled/000-default 
<VirtualHost *:80>
  ServerAdmin webmaster@grp1.netlab2009.liacs.nl
  ServerName www.grp1.netlab2009.liacs.nl

  RewriteEngine On
  RewriteRule ^/$ /project/grp1 [L,R]

  <Location /project>
    SetHandler mod_python
    PythonInterpreter main_interpreter
    PythonHandler trac.web.modpython_frontend 
    PythonOption TracEnvParentDir /var/trac
    PythonOption TracUriRoot /project
  </Location>

  <LocationMatch "/project/[^/]+/login">
    AuthType Basic
    AuthName "Trac (netlab/netlab)"
    AuthUserFile /var/trac/.htpasswd
    Require valid-user
  </LocationMatch>


  ErrorLog /var/log/apache2/error.log
  LogLevel warn
  CustomLog /var/log/apache2/access.log combined

  <Location /mpinfo>
    SetHandler mod_python
    PythonInterpreter main_interpreter
    PythonHandler mod_python.testhandler
  </Location>

  Alias /doc/ "/usr/share/doc/"
  <Directory "/usr/share/doc/">
    Options Indexes MultiViews FollowSymLinks
    Order allow,deny
    Allow from all
  </Directory>
</VirtualHost>
}}}

#Username password file creation
{{{ 
$ echo "netlab" | htpasswd -b -c /var/trac/.htpasswd netlab
}}}

# Trac creation
{{{
$ mkdir /var/trac
$ chown www-data:www-data /var/trac
$ sudo -u www-data trac-admin /var/trac/grp1 initenv
}}}

# Change alter /var/trac/grp1/conf/trac.ini
{{{
[header_logo]
alt = LIACS - netlab 2009 - grp1
height = -1
link = 
src = http://www.liacs.nl/base/images/banner.jpg
width = -1

[project]
admin = 
descr = My example project
footer = Visit the Trac open source project at<br /><a href="http://trac.edgewall.org/">http://trac.edgewall.org/</a>
icon = common/trac.ico
name = Liacs netlab 2009 - group 1
url = 

}}}