Do you ever wanted to know how to determine the network address, the broadcast address, starting and ending IP addresses and how many hosts there's in a range, only knowing a IP address and its netmask ?

Here's the technique...

You may be like me, having some unused domain names. They might be used to generate some money or at least use the natural traffic of the domain

There's many parking systems ... but I choosed to use the most know one sedo, which requires you either to change you domain name servers to sedo ones or to set up url forwarding. This is what I'm gonna speak about.

I won't detail how you should register an account on sedo or how you should add you domain to sedo. This is your job.

In order to secure your mutualized web hosting server, you might have considered running each vhost under different accounts using suexec mechanisms, but it's not really handy because you must have a copy of the php-cgi binary for each vhost somewhere with the appropriate rights, and then when updating php you're pretty embarrassed.

There's something easyer to do, and it's by using suphp. Configure it one time, and then you don't have to care much.