[NTLUG:Discuss] Web-server Farm - Networking Question

[David Simmons]

I know what I'm hoping to do....I need help in understanding which
technology/buzz-word to research and RTFineM on.

Situation:

Physical CentOS server with a single, static IP address....with
multiple virtual machines - each VM (also linux / CentOS based) set up for
web-hosting (LAMP with ssh/ftp access).  Say VM1 hosts
www.somesite.com.....say VM2 hosts www.anothersite.com.....and say VM3
hosts www.finalsite.com

I'd like to setup DNS to point to the
single 'real-world' address - but have the individual VM respond to the
request.

What technology do I use so that all of the virtual
machines are seen on the 'real' static IP address to the world?.....so
that people on the internet can SSH into their own box (which is just a VM
on the host).

I've been researching Multi-homing.....and Linux
Virtual Server.....but some of the howto's/docs are ancient.

Any book / site / howto suggestions?

Thanks in advance - Dave