it is posibile, an rule by port example:
src-ip`s: 0.0.0.0 src-ports: 80,443 dst-ip`s: 192.168.0.0/24
that will limit the web for ip`s range 192.168.0.1 - 192.168.0.254
this is if i want to control traffic coming from port 80 and 443. how about the reverse, that is to control all other ports except port 80 and 443? let's say ports 1025-65535, i think this is the ports bit torrent and p2p applications are using. if i'm gonna do it the way you suggested, it will be a very long list of code to include all ports except 80 and 443

thanks for your support and patience. by the way, is there a documentation on how to use webhtb? i'd like to know what src-ip's, src-ports, mark, etc are for