|I meant, that most web servers do listen to port 80.|
But clients do request from a high port (1024 - 65535) to even this port 80 of the web server.
The reply to this request comes from the web servers port 80 and goes to a high port of the client, that started the request!!!
Forwarding port 80 means, to forward request from the internet to a machine inside you local network.
But this surely doesn't work, if the routers web interface is configured for administration from the internet and works itself on port 80.
I myself have 4 routers, where I disabled the administration from the internet, which uses port 80, and forwarded port 80 to my local situated web server and it works.
NOTE: we are talking about forwarding port from outside to inside the local lan, not from inside lan to web!
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