Someone

<VirtualHost *.*.*.*:80>
        ServerName      foobar.com
        ServerAdmin     treyka@foobar.com
        DocumentRoot    /home/foobar/public_html

        <Directory /home/foobar>
        AllowOverride   All
        Order           allow,deny
        Allow from all
        Deny from       $nasty_addresses
        </Directory>

        RewriteEngine   on
        RewriteLogLevel 3
        RewriteLog "/var/log/apache/rewrite_log"

        RewriteRule     $stuff
</VirtualHost>