I'm not sure I understand why not just tell ipfw to count all packets that an ISP is likely to charge for and have the tables 'reaped every now and then by a daemon to give a time dimension to the data..
On Thu, 26 Jun 2003, Robert Watson wrote: > On 24 Jun 2003, Adam wrote: > > > My ISP is placing strict restrictions on how much I can transfer each > > month, with high penalties for exceeding their limits. However, they > > don't provide any way for their customer's to check to see how much > > they've transferred, so we end up transferring far less than what we are > > allowed, just to make sure we avoid paying the fines for going over the > > limit. > > > > So, what I need to do is find a way to monitor my total bandwidth > > through my external NIC. My gateway is running FreeBSD 4.8 with > > ipf+ipnat. > > > > I *don't* need anything fancy. All I need is to be able to check at any > > time how much I've transferred since the first of the month. What's the > > easiest way to set up something like this? I know there are fancy > > solutions with graphs with usage stats and such, but that's not what I'm > > after. > > > > Thanks for your advice, > > I use the following home-grown tool to measure bandwidth consumed by > the hosts on my ethernet segment: > > http://www.watson.org/~robert/freebsd/bpfmon.tgz > > It uses BPF to monitor traffic on the segment, and drops bandwidth samples > into a data directory every five minutes. there's a post-processing > script that generates a CSV of samples, by local host, for easy > consumption in a spreadsheet. It's not a great program, but it is cute > and works. Make sure to read the README if you use it; you have to set a > few things at compile-time, since I wrote it for local use and never > really attempted to generalize. I use it to monitor inbound and outbound > IP traffic for around 400 hosts here for precisely the same reason you are > interested :-). > > Robert N M Watson FreeBSD Core Team, TrustedBSD Projects > [EMAIL PROTECTED] Network Associates Laboratories > > > _______________________________________________ > [EMAIL PROTECTED] mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "[EMAIL PROTECTED]" > _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
