How can I redirect a subdomain to an internal IP?

Question

I have a FQDN let's say abc.com with only one external IP and I use zoneedit.com ns servers.

I have configured www as a CNAME of abc.com. The web server is setup wiith IIS on local computer. What I want to do is to have a subdomain xyz of abc.com to be redirected to let's say 192.168.1.120 on local pc but to be accessible from web like xyz.abc.com.

How do I make this work?

I tried to setup headers in IIS like for www.abc.com to port 80 192.168.104 (this is the IP for web server) and xyz.abc.com to port 80 192.168.120 (the other server which is NOT a web server).

Answer 1

Local addresses (like 192.168.*.*) aren't allowed on the Internet. They are managed by your local router and translated there.
If you only have one public IP then both subdomains will need to have that same IP. All traffic is not tagged as comming from a certain domain (HTTP-traffic almost always is though).

You can however use NAT forwarding. It is done by your router and forwards ports. You can forward traffic to port 80 to 192.168.1.104 and all other traffic to 192.168.1.120 but xyz.abc.com:80 and www.abc.com:80 will get resolved to your.public.IP.addresss:80 and your router won't be able to tell the difference.