On 24/09/2012 17:08, Jonathan Abbey wrote:
On Mon, 24 Sep 2012 10:51:08 -0500, Shannon Rodrigues wrote: | Hi Jon, | | Thank you for your reply. | In my typical setup, I want a tool which will display download rates of a | particular user/ subnet. I am configuring download limiting rules to user/ | subnet but unfortunately have no tool to verify whether the config is | working or not.
iftop doesn't know anything about what user is communicating, it just shows what ports and IP addresses are involved.
| Manually checking output of iftop is helpful, but I would like to push the | output to a file so that I could verify this at the end of the day. Getting | it listed by ports is not a necessity. Traffic to and from will solve my | purpose. | I would like the output of download rate of a user/ subnet to be written to | a file for lets say a 5 second interval.
Couldn't you use netstat (or ss, on more modern Linuxes) for that? Or tcpdump with some after the fact filtering?
iftop's claim to fame is real time curses-style graphing of traffic, there are plenty of tools for doing statistics gathering that would be more suitable for generating reports.
I did actually do a bit of work on having iftop dump stats to a file for a particular project that I had.
I don't intend to ever release it, and as Jon says, other tools are almost certainly a better starting point, but if you're particularly interested have a look at iftop-dump in CVS.
Paul