NBAR2 on Sup8E can assist in blocking BitTorrent. While somewhat useful, BitTorrent is mostly used for downloading pirated movies, and BitTorrent off someone’s ADSL line is usually dead slow.
Create a class map and a policy map as shown below, and attach that policy map to your ingress interfaces, and BitTorrent should be blocked.
class-map match-all QoS-Cls-BitTorrent match application bittorrent policy-map QoS-Pol-BitTorrent class QoS-Cls-BitTorrent drop interface range TenGigabitEthernet1/1 - 4 service-policy input QoS-Pol-BitTorrent
The final questions are: Does this work at all? Is FNF needed for engaging NBAR2? Are additional licensing needed beyond the current IP Base license?