Hello i am new here.

I have my PS3 connected to a wireless router, with excellent signal, wich has WAN conection type PPPOE. I have static DHCP configured on LAN and my PS3 LAN IP registered on router's DMZ. However i can access any web page with my PS3 browser, but cannot connect to PLAYSTATION store. On PS3 internet connection test, connecting to PS network failed. Could there still be a problem with my router even if my PS3 LAN IP is on DMZ? I have a trendnet wireless router type TEW-432BRP. Do i need to free some port's on my firewall even if i have the PS3 on DMZ?