I have been having some fun toying with my home network. Currently I have purchased a domain name and want to setup a home network. Basically I want to setup some subdomains so that when they are connected to, they will be routed to the proper internal machine. Is this even possible, if so what technology should I be looking at? Here is a "picture" of what I'm wanting to achieve. Keep in mind I only have one external IP provided to me by my ISP.
"Telnet MachineA.Test.com" -----> External IP----> Redirect data to proper internal IP based on domain.
"Telnet MachineB.Test.com" -----> External IP----> Redirect data to proper internal ip based on domain.
Internally I have this type of setup Internet ----> One IP ---> Modem ---> Router ---> 5 computers on LAN.