New portspace for different domains on the same IP

Question

I've purchased a RootServer with one static IP included and the possibility to register up to four. For some extra cash of course. I'm running two different services on this root server with two different domains (service1.com / service2.com).

Now I want to divide the RootServer into two VirtualServers. And here's the problem: I currently have only one IP but two VirtualServers, which require some ports that are the same.

service1.com / VirtualServer 1 / 123.456.234.12

• HTTP :80
• FTP :21
• MySQL :3306
• ...

service2.com / VirtualServer 2 / 123.456.234.12

• HTTP :80
• FTP :21
• MySQL :3306
• Minecraft :22566
• ...

So my idea was to completely rout:

• all requests on every port on service1.com to the VirtualServer1
• all requests on every port on service2.com to the VirtualServer2

so that I would have a completely new "portspace" (?) for every VirtualServer without the need to buy a second domain.

Is this somehow possible?

Answer 1

No it is not possible. Communication is IP:Port based and not name based. So there is no general way to do this.

With the introduction of HTTP 1.1 there is an addition where you can use name based communication over IP based communication. But this is only implemented for HTTP(S). That said it is protocol dependent and not available for every communication in the TCP/IP world.