How can a single IP address VPS host be implemented?

The new idea is whether a single IP address VPS host can be implemented-Linux Enterprise Application-Linux server application information. The following is a detailed description. It is understood that the current market VPS host. You need to configure multiple IP lines. However, the computer performance virtualized by VPS is not flattering. A lot of IP resources are wasted.
Whimsy. Can a VPS virtual server be implemented through a public IP line?

Squid + iptable for transparent proxy I think it should be possible. It's a pity that it will not be available soon. Do not understand the two. I downloaded two tutorials to make it difficult. Hope you can test the dial.

The case is as follows:
A public IP line with a fixed IP Address
One SERVER with the gnome desktop environment installed on ubuntu server 7.10
Virtualbox is installed on the server, and three servers are virtualized. These are the three virtual systems centos 4.5 ubuntu server 7.10 windows 2003 server. Is In The Same Intranet CIDR block.
Each server runs a WEB server, such as apache java iis. And FTP server software database server software. Use non-standard ports, such as 8081 8082 8083 2101 2102 2103,

The expected final result is:
1. The host system can use iptable to limit the bandwidth of three virtual servers. For example, if the centos bandwidth is limited to 2 MB, the ubuntu server bandwidth is limited to 7.10. Windows server 2003 is limited to 1 mbps bandwidth
2. The host system uses different ports. Implement transparent proxy for the three virtual servers respectively. For example, when the Internet accesses www.dzbbstest.com. Access to the centos virtual machine, and perform transparent proxy on the corresponding port.
Use the Internet. It seems like using the host machine directly. Of course. If a new domain name is added. I know that you need to reconfigure the squid iptable rules on the host machine. This is not troublesome.
3. Install mysql database server software on the host system. All three virtual servers use mysql servers on the host system. How to Set it (probably not a problem ).

Use the preceding settings. I want to easily maintain three systems. My goal is to make php jsp asp run on three system platforms respectively. Users of virtual servers can manage their own data,
Easy to maintain. It won't be as troublesome to run the machine room repeatedly due to system crash.


Hope experts can help solve the problem .. Run the IDC. The legs are broken. So tired. My current server is used with three friends. One can only understand JSP development. The other one only understands ASP. NET development. I can. None of them understand. PHP only ..
(O): tx ah...

[ This post was last edited by szalexliu]