This page is a lite version of Port Forwards comparing with that in the usual LuCI interface (Network → Firewall → Port Forwards).
Port forwarding allows remote computers on the Internet to connect to a specific computer or service within the private LAN.
Attention: It is not available yet with LuCI interface.
This version deletes Source Zone and Destination Zone, on the other hand, a default value was set to them.
Source Zone : wan.
Destination Zone : lan.