NAT port forwarding

[jmaginarynumber]

I have recently purchased a Cisco 871 router. In the GUI from the installed software, I have been able to configure which ports are forwarded to a specified IP address within my local area network.

This seems to output a configuration line like this:

ip nat inside source static tcp 192.168.1.123 1000 interface Dialer0 1000

However, I can only do this one port at a time. Is there a function or command that I can use to specify a range of ports? For example, I would like to forward tcp ports 1000-2300 to the IP address 192.168.1.123.

Any help would be appreciated.

[drolemc]

I think in order to support the use of non-standard FTP port numbers, you must use the ip nat service command. This is a sample syntax: router-6(config)#ip nat service list 10 ftp tcp port 2021.

For more information please click following URL:

http://www.cisco.com/en/US/docs/net_mgmt/signaling_gateway_manager/2.2/user/guide/sgmunetw.html#wp1031911