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is it possible an ISP could disable Bittorrent?


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I am in China using an ISP called Tie Tong, whatever torrent client i use, i get reall really slow or close to zero speed. A guy posted something saying it is possible for a ISP to limit bittorrent speed using NBAR (Network-Based Application Recognition) and An external Packet Description Language Module (PDLM) by configuring their CISCO router with the following, for examples, (I am new to these terms and I can translate more if you guys want to help more on this)

1. to ban BT

class-map match-all bittorrent

match protocol bittorrent

!

!

policy-map bittorrent-policy

class bittorrent

drop

!

interface GigabitEthernet0/2

description CONNECT INSIDE

ip address 192.168.168.1 255.255.255.252 secondary

ip address 192.168.21.1 255.255.255.0

ip nat inside

service-policy input bittorrent-policy

service-policy output bittorrent-policy

duplex full

speed 1000

media-type rj45

no negotiation auto

2. to ban eMule

ip nbar pdlm bittorrent.pdlm

ip nbar pdlm eDonkey.pdlm

class-map match-any bittorrent

match protocol bittorrent

match protocol edonkey

!

!

policy-map bittorrent-policy

class bittorrent

drop

!

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