Do I need a router firewall?

All right,
I’m the regular xbox 360 game user.The mother and father at times traditional bank internet…
They’re a little bit frustrated that i lowered this firewall to experiment with online games overtly (The router suggested POST accomplish this)
I’ve determined the:Reduced (Disable Firewall)
The NAT Variety will be Wide open while the upon Decreased…Whenever its on low to medium…it is NAT variety will be Small…

Does someone have to have the firewall with our router with

Of course a new routers components firewall is the primary line of defence, most suitable option is always to solely wide open this vents you actually need to apply pertaining to system reside.

UDP 88
UDP 3074
TCP 3074.