I'm using ADSL service from ISP. The ADSL modem has only 1 LAN port and that port is connected to my PC.
The LAN IP of my computer is 192.168.1.100, and I have apache running on localhost (127.0.0.1) at port 80.
My setting is as in the image:
However, after saving this NAT setting, I still can not access Apache on my PC (192.168.1.100, port 80) from the Internet.