01-05-2005
User Bandwidth Monitoring
What are my options for monitoring bandwidth on a per user basis? Ideally, I'd like something thats easy to configure (like a webmin module pleeeease?), and that could monitor ALL bandwidth. Not just web bandwidth but also ftp/afp uploading and downloading, and email traffic. I know this is a rather complicated task but I'm hoping theres an easy solution since so many people want/need such a function.
\thanks
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LEARN ABOUT LINUX
dummynet
DUMMYNET(4) BSD Kernel Interfaces Manual DUMMYNET(4)
NAME
dummynet -- traffic shaper, bandwidth manager and delay emulator
DESCRIPTION
The dummynet system facility permits the control of traffic going through the various network interfaces, by applying bandwidth and queue
size limitations, implementing different scheduling and queue management policies, and emulating delays and losses.
The user interface for dummynet is implemented by the ipfw(8) utility, so please refer to the ipfw(8) manpage for a complete description of
the dummynet capabilities and how to use it.
Kernel Options
The following options in the kernel configuration file are related to dummynet operation:
IPFIREWALL enable ipfirewall (required for dummynet)
IPFIREWALL_VERBOSE enable firewall output
IPFIREWALL_VERBOSE_LIMIT limit firewall output
DUMMYNET enable dummynet operation
HZ set the timer granularity
Generally, the following options are required:
options IPFIREWALL
options DUMMYNET
options HZ=1000 # strongly recommended
Additionally, one may want to increase the number of mbuf clusters (used to store network packets) according to the sum of the bandwidth-
delay products and queue sizes of all configured pipes.
SEE ALSO
setsockopt(2), if_bridge(4), ip(4), ipfw(8), sysctl(8)
HISTORY
The dummynet facility was initially implemented as a testing tool for TCP congestion control by Luigi Rizzo <luigi@iet.unipi.it>, as
described on ACM Computer Communication Review, Jan.97 issue. Later it has been modified to work at the IP and bridging levels, integrated
with the ipfw(4) packet filter, and extended to support multiple queueing and scheduling policies.
BSD
October 28, 2002 BSD