If you filter using URL parameters then embed into a different page, you can send them to that page. However, it should still be embedded using the same string from the "share" button.
We have a Tableau Collaboration portal solution where you can embed Tableau Public share links or private share links and share it with any users. Our solution masks the original URL so the user will not see any other dashboard from your public profile. Great for sharing dashboards with your clients in a secured way without opening up your public dashboards to them.
EzDataMunch BI Collaboration portal for Tableau is a utility where not only you can share the dashboards, but users can collaborate to analyze data by chat, comments, forums, FAQ, Video analysis and much more. For more information, write to me.