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From: Nils Vogels <nivo+sender+a5063a@yuckfou.org>
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Subject: Re: Find data transfer on a particular port
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Sunil Sunder Raj wrote:

> Hi,
>
>> From mrtg I come to know that my server X is transferring Y mbit/s. 
>> But When 
>
> I get into the server, how do I know which service/port is 
> transferring maximum data.
>
> Regards
> SSR

Consider using tools such as trafshow, ethereal, ntop, and various 
others listed in /usr/ports/net

HTH & HAND