redirect subdomains bar one - apache

Question

So I've set up a Amazon EC2 and registerd a few domains with 123-reg, i've set up my Apache VirtualHost But now I'm going to need to set up a few sub domains (like kitten.example.com). But it's only going to be a few, and I would like the rest of the subdomain wild cards to go to the base like this:
kitten.example.com -> kitten.example.com BUT
*.example.com -> example.com
currently my DNS with 123-reg is as follows:
www A 198.168.0.0
kitten A 198.168.0.0
* A 198.168.0.0
and my Apache httpd.conf is:
<VirtualHost *:80>
DocumentRoot "/var/www/example.com"
ServerName example.com
ServerAlias example.com
<Directory "/var/www/example.com">
Options Indexes FollowSymLinks
AllowOverride All
Order allow,deny
Allow from all
</Directory>
</VirtualHost>
<VirtualHost *:80>
DocumentRoot "/var/www/kitten.example.com"
ServerName kitten.example.com
ServerAlias kitten.example.com
<Directory "/var/www/kitten.example.com">
Options Indexes FollowSymLinks
AllowOverride All
Order allow,deny
Allow from all
</Directory>
</VirtualHost>
so how do i redirect all those wildecard subdomains to my base domain?

Answer 1

You will have to map DocumentRoot and Directory to your base domain directory.
or if you wish to change the domain name also, then write a .htaccess rule for it.

Answer 2

Create a virtual host directive that doesn't specify the ServerName or ServerAlias. This will catch all virtual hosts on that IP address (you specifcy all IP's on port 80) that do not map to any other virtual host specification.
<VirtualHost *:80>
DocumentRoot /www/default
...
</VirtualHost>
http://httpd.apache.org/docs/2.2/vhosts/examples.html#default
However, if you want to send a 301 HTTP Header (permanently redirected), you'll need to use mod_rewrite or something similar:
http://httpd.apache.org/docs/current/mod/mod_rewrite.html
How to setup Apache mod_rewrite to redirect all but one subfolder is one good example .. needs to be modified to suit your needs if the first option isn't sufficient for your needs.