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As above saying, the DNS record is not involed about the port number. But I'm not sure the RDP client program able to specified a port number or not.<br />
If yes, you just set a port forwarding on the firewall, and forward the specified port to different host, it should be work already.<br />
If not, you must have two true IP address, and use NAT to forward different WAN IP to specified host, and no need to modify the default port number of RDP<br />

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As above saying, the DNS record is not involed about the port number. But I'm not sure the RDP client program able to specified a port number or not.
If yes, you just set a port forwarding on the firewall, and forward the specified port to different host, it should be work already.
If not, you must have two true IP address, and use NAT to forward different WAN IP to specified host, and no need to modify the default port number of RDP


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Here's what I have: &nbsp;2 servers listening on RDP. &nbsp;One is set for port 3389 (default) the other is set for 3390. &nbsp;I can put the IP addres:port # and get to them fine.<br />
<br />
What I want to do is have the following mapped to them:<br />
<br />
ts.somename.org = xxx.xxx.xxx.xxx<br />
ts1.somename.org=xxx.xxx.x<wbr />xx.xxx:339<wbr />0<br />
<br />
Obviously, the ts one is just an additional A record added to DNS, but how do I do the TS1?
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Here's what I have:  2 servers listening on RDP.  One is set for port 3389 (default) the other is set for 3390.  I can put the IP addres:port # and get to them fine.

What I want to do is have the following mapped to them:

ts.somename.org = xxx.xxx.xxx.xxx
ts1.somename.org=xxx.xxx.xxx.xxx:3390

Obviously, the ts one is just an additional A record added to DNS, but how do I do the TS1?

Assign a subdomain to a specific IP address and port number

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.

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

Transmission Control Protocol/Internet Protocol (TCP/IP) is the set of networking protocols that define end-to-end connectivity specifying how data should be packeted, addressed, transmitted, routed and received at the destination. This functionality is organized into four abstraction layers which are used to sort all related protocols according to the scope of networking involved.