Most modern modem/routers that include NAT allow you to forward external (WAN) ports to different internal (LAN) ports. So (assuming your modem/router supports that) you should be able to forward external port 8184 to port 80 on your 192.168.0.123 server (and same for 8143 to 443)
Or just use port forwarding on your modem/router
Most modern modem/routers that include NAT allow you to forward external (WAN) ports to different internal (LAN) ports. So (assuming your modem/router supports that) you should be able to forward external port 8184 to port 80 on your 192.168.0.123 server (and same for 8143 to 443)