Lost Denon on network with linux firewall.

We installed a remote backup server running Debian Linux in a client’s home. The backup server is also a firewall to protect the home’s Personal Computers. The home network also had a Twonky MediaServer to manage the components of a home theater. Due to the way the home is wired (and other reasons) the Denon receiver sits outside the firewall in a DMZ behind the internet modem on a...

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