How to Real Monitor Internet traffic in Cisco 877 Router

Hi
I like to Monitor Real Time  my 877 Router Internet Traffic, witch user what is doing ? from 877 router it self using by firewall ? any one can help me ?

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taherudinAsked:
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Istvan KalmarHead of IT Security Division Commented:
Hi,

there are two way...

mirroring the port which connected to switch, or use netflow collector...
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neubdaCommented:
Do you mean internet traffic like http/s? Then you should implement a transparent proxy like this:
http://tldp.org/HOWTO/TransparentProxy.html

But if you want even more u should look at the cisco documentation for "ip flow-export". This feature logs all traffic information to a ip flow compatible server for analyzing.
http://en.wikipedia.org/wiki/Netflow

The easiest netflow server would be ntop (www.ntop.org) but it has much overhead. If you need a special set of filters you should look into the linux flow utils. But be warned, it needs some time to understand and implement it.
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taherudinAuthor Commented:
I have found from cisco
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