[LARTC] ip_conntrack limit --- torrent , DC++ , eMule

[foxy 202]

Hi all,
 i need advice how can i limit ip_conntrack per IP. 
clients of network that i support often uses  torrent , DC++ , eMule
clients and i have lost packages  because they open too many ports.

i have traffic control limits but this obviously isn't enough 

Any advance how to prevent server from this kind problems will be welcome.



Best regards
Emil