more to do with name resolution than security
PPURU, Thank you for the reply, but i feel my question had little to do with security (though security is important).
my main interest is to use single ip and divide it based upon service.Let me make myself VERY CLEAR.
My need is:
I have router wan address "18.104.22.168". This router is also conencetd to DMZ LAN with ip "192.168.1.0" When remote request is "www.abc.edu". Router routers traffci to "192.168.1.2" on which is connected WWW server. When remote request is "mis.abc.edu", traffic is routed to "192.168.1.1". and son on. When request is for others, traffic is routed to proxy server on 192.168.1.4.
This is what i wanted.
Nothing to do with security as you have mentioned.
Does anyone has any idea how to acjhieve this goal.