Multiple public IP addresses Nating multiple ports to a single inside host

[David Goetsch]

I have seen many examples of Nating and it seem route maps are needed for this.  Oh, the router is a 1921 with Version 15.2(4)M6a software.  So the scenario is: 

Outside addresses 5.5.5.0/24  need to use ports 6000-6999 to access the same port on a server on the inside at address 192.168.16.10.

Do I need to make access-list for the outside address and another for the ports.  And do a

ip nat inside source static 192.168.16.10 ????

Or am I going down the wrong path here?

[Philip D'Ath]

Is this a Linux server?  If so, I could consider installing HA proxy and doing a 1:1 NAT on the server.  Something like the below should send ports 6000-6999 to port 80 (as an example).

listen server
 bind *:6000-6999
 mode tcp
 balance roundrobin
 server localhost 127.0.0.1:80 check

[David Goetsch]

Philip

It is a Windows 2008 server.  There is a financial application there that is managed by the vendor.  The Vendor has 24 outside IP address that they might use to access to server to maintain it.