ePMP SMs support Port Forwarding and Port Mapping in NAT mode.
Protocol UDP or TCP or TCP+UDP should be defined for port forwarding and mapping rule.
Port Begin and Port End defines range of external ports on WAN interface.
Forwarding IP defines IP address from LAN side where ports will be forwarded.
Configuration from image above provides port forwarding for external TCP+UDP ports in range 6000-6050 on WAN to same range 6000-6050 to internal IP address 10.1.1.117 in LAN.
For port mapping configuration Mapped Port should be added to Port Forwarding configuration.
Configuration from image above provides port mapping for external TCP+UDP ports in range 6000-6050 on WAN to same mapped port 7000 to internal IP address 10.1.1.117 in LAN.