[quote=Hobomassiv;5538054]I really dont think anyone should need to put their PS3 in a DMZ.
What about the thousands of sky customers who cannot use their own router and have no port forwarding or DMZ options (well all the people i know on sky at least).[/quote
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Now you may need to do this for some of the following reasons:
* Not being able to join rooms
* Not being able to speak over headset
* Not being able to hear over headset
* Not being able to join games which are hosted by certain people
* Any problems to do with connectivity to the PSN or game specific servers, especially if your computer will connect to the internet, but PS3 won't.
* Problems with media servers
as for sky im with sky iv done it. and my ps3/xbox/laptop's all work alot better
as for port's/dmz every router has ports and every router has a dmz option
your friend not looking in the right place. if in doute phone ur ISP they will tell you where it is