DMZ is that possible?

Question

Computer networks

Interested in the allocation of part of the servers in the demilitarized zone, as I read with routers, only one IP can be demilitarized, so you need a bunch of two routers as in the figure?
That is, if I basically indicate on HP that IP “such and such” is DMZ, and since DMZ can only be a specific device, then I put the “FW 7” router on this IP to which I already cling what I want.

Answer 1

What is called DMZ on SOHO routers is actually called static nat. Those. when one WAN ip maps entirely to one LAN ip.
If you need to publish several services / servers, then this can be done using PAT. On SOHO routers it is also called a virtual server.

Answer 2

Something you piled up some garbage, make port forwarding to the necessary servers and don’t worry.

Answer 3

dmz - this can be a subnet (vlan for example) access to / from which is controlled by a certain firewall. So this is not necessarily 1 ip - device.
not necessarily it will be 1… you can have a lot of dmz