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We have a domain in an organisation (e.g. mydomain.com). In our Firewall &nbsp;(Fortinet 60B) the eksternal IP of this domain is redirected to an internal server. (e.g. 192.168.0.10)<br />
I would like to create a subdomain (sub.mydomain.com) which is linked to a different internal server (e.g. 192.168.0.20). &nbsp;How can achieve this by configuring internal DNS and the firewall? <br />
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Since there is a redirect in the firewall which sends the user to 192.168.0.10 do I need a different external IP for the subdomain and redirect this IP to the internal server (192.168.0.20)? Or is there a way in the firewall to redirect requests based on URL and not IP? <br />
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Do I need to contact my ISP and ask them to redirect this particular subdomain to an IP? Or will the subdomain automatically request the same IP address as the top domain?<br />
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We are using exchange 2003 / Active Directory
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We have a domain in an organisation (e.g. mydomain.com). In our Firewall  (Fortinet 60B) the eksternal IP of this domain is redirected to an internal server. (e.g. 192.168.0.10)
I would like to create a subdomain (sub.mydomain.com) which is linked to a different internal server (e.g. 192.168.0.20).  How can achieve this by configuring internal DNS and the firewall? 

Since there is a redirect in the firewall which sends the user to 192.168.0.10 do I need a different external IP for the subdomain and redirect this IP to the internal server (192.168.0.20)? Or is there a way in the firewall to redirect requests based on URL and not IP? 

Do I need to contact my ISP and ask them to redirect this particular subdomain to an IP? Or will the subdomain automatically request the same IP address as the top domain?

We are using exchange 2003 / Active Directory

subdomain linked to different server

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.

Hardware Firewalls

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.