Rust Legacy Help!

I recently created a server and i portfowarded and everything was working well till i decided to try and get it on the rust server list i looked into it and i really couldnt find anything i searched videos and videos all talking about my modem which i have no idea how to long on i want players to see my server on the list and not have to do net.connect and also about my modem i am playing on a laptop and my modem is connected to a desktop so just letting you know and also my router is a trendnet tew-671br and my modem is a webstar modem dpx2203c please help i have know idea what to do and i want my server to get popular.