I'm sure the title is making you wonder but I'll try to explain :).
Currently, I have bare metal servers dedicated to a single function of responding to port 80 clients with a simple 200 and a few UDP ports allowed for a test the clients can run. It's basically a custom ICMP port range.
Anyhow, these servers are very important but they are a waste of resources as it's their only function. If I could convert these to ESX, they could be better utilized.
There cannot be any sort of hardware between the clients and the servers. We've tested using ESX to a VM but the problem is that there were cases where the host itself responds to clients causing false alarms. It's something in the way that the software devs built this test system so a host cannot be used.
That said, would it be possible in a safe way to allow port 80 hits, using a custom page that simply has a digit on it and opening a few UDP ports.