[c-nsp] Measuring end-to-end repsonse times from the data center only

[Joe Loiacono]

Anybody know of an open-source tool that can be installed in a data 
center, monitor TCP sessions via packet capture, and determine end user 
response times? Without any need to instrument client hosts.

Something like NetQoS' Super Agent (which is very cool, but pricey)

Thanks,

Joe