I've been doing a lot of looking through my TG582n having recently discovered the telnet command line interface.
One thing that has got me confused is this config entry.
I suppose the first question is what CONE is an acronym for?
According to Wikipedia, these ports are used for the following purposes:
69 TCP UDP Trivial File Transfer Protocol (TFTP)
88 TCP UDP Kerberos authentication system
3074 TCP UDP Xbox LIVE and Games for Windows – Live
3478 TCP UDP TURN, a protocol for NAT traversal (extension to STUN)
3479 TCP UDP PlayStation Network
Since I've no interest in gaming, can they be removed from this list?
Via the web interface, I can see gaming is disabled.
This is a function that helps all games work through the NAT of your Technicolor Gateway.
With Game Mode disabled your XBOX 360 and PS3 will still work correctly.
Note: By enabling the Game Mode you will be reducing the protection provided by your Technicolor Gateway.
But the fact that XBOX and PS3 are specifically excluded from general game mode seems to tie in with the list of CONE ports.
Also, the Game & Application Sharing->Assigned Games & Applications list is empty.