Blocking BitTorrent Traffic

Unanswered Question
Aug 7th, 2008
User Badges:


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.

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
JORGE RODRIGUEZ Thu, 08/07/2008 - 22:38
User Badges:
  • Green, 3000 points or more

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 Thu, 08/07/2008 - 23:41
User Badges:

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?

JORGE RODRIGUEZ Thu, 08/07/2008 - 23:57
User Badges:
  • Green, 3000 points or more

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 Fri, 08/08/2008 - 20:38
User Badges:

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.


This Discussion