The computer to which you want to connect to requires a static IP address. Open the properties window of the LAN connection on your computer, select the TCP/IP Protocol element and press Properties. Change the settings to manually configure the IP address to something like 192.168.1.10.
Go to the setup page http://192.168.1.1/ "Application & Gaming", "Port Forwarding". Enter port forwardings for port 80 and 443.
e.g. http 80 80 Both 10 and https 443 443 both 10
enable both forwardings and press save settings.
If you have a software firewall running on your computer you must also open these ports 80,443 there for any connecting IP address. The text says you will also need 2002 for localhost.