Cisco Support Community
Step-by-Step Configuration and Troubleshooting Best Practices for the NGFW, NGIPS and AMP Technologies A Visual Guide to the Cisco Firepower Threat Defense (FTD)
Community Member

Blocking BitTorrent Traffic


I have recently got a Cisco 877 Router for my company internet subscription. I would like to setup the router to block all BitTorrent traffic. Can you advise me how this can be done? Thanks.


Re: Blocking BitTorrent Traffic

Have a look at NBAR, check your current IOS version see requirements in bellow link NBAR Features, you will need 12.4x as in this version more NBAR features was added for BitTorrent.

NBAR features - road map

Classification of P2P file sharing

Basic sample config

Community Member

Re: Blocking BitTorrent Traffic

Thanks. I tried to check this out, my router does not seem to have NBAR even though the version is 12.4x. I used SDM to check, and it said the feature is not available for my IOS image.

I tried to access the download page of Cisco, but seems like my user ID only allows me guest access. How do I upgrade my account so that I can have this feature?

Re: Blocking BitTorrent Traffic

try through command line and place a ? mark, this way you can know if commands are taken.Im sure your version supports NBAR.

router(config)#class-map ?

router(config)#class-map match-any ?


router(config)#class-map match-any P2P

you can always remove it

router(config# no class-map match-any P2P

Community Member

Re: Blocking BitTorrent Traffic

Nope, it is not available with my IOS. Could it be the version that I have got has it disabled? My router model is 881. Or is there anything that I need to do to enable this feature? I am struggling to block the torrent traffic.

CreatePlease to create content