How to track down the source IP based on port number

Hi,

Recently I noticed some abnomral utilization problem in one site. IP NBAR indicates eDonkey is taking a lot of bandwidth. Now the question is, how do I track down which IP is the source of these traffic? I don't think we can implement any packet analyzer, I am looking for any IOS command if it actually exists.

Thanks.
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robinluoAsked:
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Scotty_ciscoConnect With a Mentor Commented:
look at IP accounting ....
http://www.cisco.com/en/US/customer/products/sw/iosswrel/ps5187/products_command_reference_chapter09186a008017d169.html#wp1091971

enable various potions of it and use access-lists to pear down ports.

Thanks
Scott
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robinluoAuthor Commented:
Thanks Scot.
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