Not familiar with Oracle, but looking at the screenshoot provided, source IP should be ANY (interface). Like regardless if the listener is LAN or WAN accessed, the traffic should be routed to port 80 on the destination IP.
So if there is an option to allow you to change that 0.0.0.0 as the source, which i assume is just the default config of the orcale interface as placeholder which have to be changed, do that instead leaving the 0.0.0.0 in there.
Have a look at your LAN interfaces and assign a static IP address for the application.