are we able to setup 2 Virtual Server ( 2 local IP address) using 1 WAN port (1 public IP address) ?
As I know, Zyxel ZyWALL NAT cannot support the server load balance case.
It only support by different source IP address to direct to different local IP/port with the same public IP & port,
rule 1: source IP range 1 -> public IP1:port X -> local IP 1:port Y
rule 2: source IP range 2 -> public IP1:port X -> local IP 2:port Z