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Hello, I have a modem MediaAccess TG789vac v2 a router TP-LINK WR841N.

And my computer is connected to Tp-link router. And tp-link router is connected to MOdem MediaAccess..

So, I want to port forwarding in router tp-link, mas when I make a test if works, give me failed.

How can I open port in Tp-Link router if, this router is connected to a modem?

Gateway MediaAccess : 192.168.1.254

Gateway Tp-Link: 192.168.0.1

Please..help-me