|Here is the manual for your blu-ray player. Network connection instructions begin on page 31. Have you followed all the steps there?|
You shouldn't have to disable any firewall features in the router itself to get the blu-ray player to work, and the firewall running on your other computer(s) is unrelated to the player. If you have concerns, try placing the player in your router's DMZ and see if that makes a difference.
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