QoS on wireless router

Model: Buffalo WZR-1750DHPD

Firmware: DD-WRT v24SP2- (04/21/14) std - build 23709a

The QoS has an extensive list of protocols to configure.

I noticed the port numbers were listed as 0~0.

Do the port numbers need to be configured, or does QoS dynamically look at the type of protocol chosen and compare it to the protocol in the packet header to choose the port numbers automatically?

I haven't ever actually used this, but I think it can be used either way. If you don't set the port specifically then it probably doesn't care what port, if you set one then it does. Again I don't know for sure but I think that's how it works

Thank you