If you have Cisco hardware you can use NBAR to get the counters. There are some good howto's in the comments section of <a href="http://www.ciscoblog.com/archives/2006/05/walking_in_the.html">http://www.ciscoblog.com/archives/2006/05/walking_in_the.html
</a> that you'll find useful.<br><br>You can also use things such as sflow, netflow, etc to send data to an ntop collector which will graph that sampling. <br><br>There are also plenty of non free layer 7 graphers out there that like to be put inline.
<br><br>Paul