Impossible, as you need to modify your ROUTER configuration, and every ISP and Router version is different, has different menus and password and have tens of different firmware for each model of router and version,... without talking about the routers controlled by the ISP directly that you cannot configure etc etc... totaly impossible. You need to modify the router configuration by hand yourself depending of your model of Router and it's specifications. But remember this is necessary only if you want a "server" like connection... what's the point of redirecting the internal IP to external IP if you use it as a "client/slave".

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