How to stop bittorrent

[bfpnetworking]

Hi all, I have a cisco 1750 router running IOS 12.1.3.xt2.  How can I stop bittorrent traffic?

I use E0 connected to a cable modem.

THanks

[fb_webuser]

try this:

fire up NBAR on E0 and create a policy and apply it to E0, example below:

NJ-R1(config)#class-map match-any P2P

NJ-R1(config-cmap)#match protocol bittorrent

NJ-R1(config)#policy-map P2P

NJ-R1(config-pmap)#class P2P

NJ-R1(config-pmap-c)#drop

NJ-R1(config)#interface ethernet0

NJ-R1(config-if)#service-policy input P2P

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Posted by WebUser Neeraj Jagga from Cisco Support Community App

[Vishnu Asok]

You also need to have NBAR turned ON on the interface to match a protocol

class-map match-any p2p_bittorrent

match protocol bittorrent

policy-map pm_p2p_bittorrent

class p2p_bittorrent

drop

interface e0

ip nbar protocol-discovery

service-policy output pm_p2p_bittorrent

Note:

You are running an IOS version which is 12 years old! You may consider upgrading the software to the latest in 12.3 Main line release