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Ports to open in your modem : Outbound ports to open

TCP port 80 - was already open
TCP port 443 - was already open
TCP port 5223
TCP port 7287
TCP port 7288
TCP port 8078
TCP port 8079
TCP port 8081
TCP port 8181

Here is an example of mine - Click for Larger View

More Details = http://support.tivo.com/app/answers/detail/a_id/402