Concept

In general, fwrtc allows classifying of network traffic into three classes:

REAL

high priority, mid bandwidth
use this for low delay applications like SSH, VoIP or DNS

BULK

mid priority, high bandwidth
this is a generic class for everything that doesn't fit above or below

P2P

low priority, low bandwidth
use this class for all unwanted traffic disturbing normal use of the internet connection (P2P and other parasites)

Note

that fwrtc does not actually classify the traffic, it just provides the classes above and allows comfortable configuration of the necessary values. For classifying traffic, use iptables (see below for more details).