Here is my sites-available defaut :

# Koha 2.2 Apache Virtual Host Config File
#
# Please include this file in your apache configuration.
# The best way to do that depends on your site setup.
# Some like an Include adding to /etc/apache/httpd.conf
# and some prefer a symlink to this file from some dir.
# Please refer to your system manuals.

# Ports to listen to for Koha
# uncomment these if they aren't already in main httpd.conf
#
Listen 8080

# NameVirtualHost is used by one of the optional configurations detailed below
# Please make sure this line is correct before uncommenting.
# See http://httpd.apache.org/docs/vhosts/ for some guides.

NameVirtualHost debian-chatel:80

# KOHA's OPAC Configuration
<VirtualHost debian-chatel:80>
   ServerAdmin biblio@chatel-saint-germain.fr
   DocumentRoot /usr/local/koha/opac/htdocs
   ServerName debian-chatel
   ScriptAlias /cgi-bin/koha/ /usr/local/koha/opac/cgi-bin/
   Redirect permanent index.html http://debian-chatel:80/cgi-bin/koha/opac-main.pl
   ErrorLog /usr/local/koha/log/opac-error_log
   TransferLog /usr/local/koha/log/opac-access_log
   SetEnv PERL5LIB "/usr/local/koha/intranet/modules"
   SetEnv KOHA_CONF "/etc/koha.conf"

</VirtualHost>

# KOHA's INTRANET Configuration

NameVirtualHost debian-chatel:8080

<VirtualHost debian-chatel:8080>
   ServerAdmin biblio@chatel-saint-germain.fr
   DocumentRoot /usr/local/koha/intranet/htdocs
   ServerName debian-chatel
   ScriptAlias /cgi-bin/koha/ "/usr/local/koha/intranet/cgi-bin/"
   Redirect permanent index.html http://debian-chatel:8080/cgi-bin/koha/mainpage.pl
   ErrorLog /usr/local/koha/log/koha-error_log
   TransferLog /usr/local/koha/log/koha-access_log
   SetEnv PERL5LIB "/usr/local/koha/intranet/modules"
   SetEnv KOHA_CONF "/etc/koha.conf"
   
</VirtualHost>

NameVirtualHost *
<VirtualHost *>
	ServerAdmin webmaster@localhost
	
	DocumentRoot /var/www/
	<Directory />
		Options FollowSymLinks
		AllowOverride None
	</Directory>
	<Directory /var/www/>
		Options Indexes FollowSymLinks MultiViews
		AllowOverride None
		Order allow,deny
		allow from all
		# This directive allows us to have apache2's default start page
                # in /apache2-default/, but still have / go to the right place
                RedirectMatch ^/$ /apache2-default/
	</Directory>

	ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
	<Directory "/usr/lib/cgi-bin">
		AllowOverride None
		Options ExecCGI -MultiViews +SymLinksIfOwnerMatch
		Order allow,deny
		Allow from all
	</Directory>

	ErrorLog /var/log/apache2/error.log

	# Possible values include: debug, info, notice, warn, error, crit,
	# alert, emerg.
	LogLevel warn

	CustomLog /var/log/apache2/access.log combined
	ServerSignature On

    Alias /doc/ "/usr/share/doc/"
    <Directory "/usr/share/doc/">
        Options Indexes MultiViews FollowSymLinks
        AllowOverride None
        Order deny,allow
        Deny from all
        Allow from 127.0.0.0/255.0.0.0 ::1/128
    </Directory>

</VirtualHost>