CAMERA CONTROLLED BY WAN
SETUP IP CONTROLLED BY DYNAMIC DNS
Two dynamic DNS: Dyndns.org, 3322.org.
ROUTER PORT MAPPING:
Take Tenda router for example, enter the Router Home Page (interface
page), select "Advanced"- "Virtual Server", add a new port number in
"Ext Port", add a new port number in "Int port", put camera IP address to
"Internal IP", then select "Save", shown as below: