From: "Ernie Zingleman" <ks4q at zingleman dot com>

> I'm going to ask this question here even though it is a little off topic.

> I'm attempting to run two telnet servers on my LAN.  One of them is 
> already using port 23.  I'd like to, through external DNS or other 
> service, direct users to the 2nd DNS server with the port number following 
> the public IP address such as XX.XXX.XX.XXX:WXYZ.

> Currently I have one host address.  I want to add a 2nd host address and 
> have it be externally redirected to my network on a port number other than 
> 23.

> Are there any DNS services or other services that anyone is aware of that 
> would allow me to do port redirection for telnet servers.  I've seen a few 
> just for ports 80 or 25.

The only thing I have seen is 
http://www.dyndns.com/services/mailhop/relay.html and it is not for port 23. 
Might want to try an e-mail.