I need to forward an UDP port range to a specific private IP address in my LAN.
In order to forward one port to an internal IP I do:
access-list <acc_list_number> permit <port_type> any any eq <port_number> ip nat inside source static <port_type> <internal_IP> <port_number> interface <outside_interface> <port_number>
However, I run into problems when I need to forward a range of ports, such as UDP 40000-42000 to a single internal IP.
I tried this command:
ip nat pool voice 192.168.0.50 192.168.0.50 netmask 255.255.255.0 type rotary access-list 102 permit udp any any range 40000 42000 ip nat inside destination list 102 pool voice
But it seems to only work with TCP ports and not UDP ones.
What's the best way to forward an UDP port range?