Date: Sat, 18 Dec 1999 20:36:42 -0200 From: "Aldrin Leal" <aldrin@americasnet.com> To: "Ian Smith" <smithi@nimnet.asn.au> Cc: <freebsd-net@freebsd.org> Subject: Re: Math Help for IPFW :) Message-ID: <007101bf49a8$5eeeb9a0$0200a8c0@expert.com.br> References: <Pine.BSF.3.96.991217181552.19958A-100000@gaia.nimnet.asn.au>
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> Sure you can use SNMP also, or instead, but if you want to do it from
I really haven't tried to find SMNP agents for Win9x, which are the
platform for the computers.
> your gathered IPFW data, why not just use the byte counters rather than
> or as well as the packet counters, per rule?
How to look at the byte counters? :]
My source is:
### Cut here
#!/usr/bin/suidperl
$rule = 2500;
if (open(HANDLE, "/sbin/ipfw -q show $rule|")) {
if ($line = <HANDLE>) {
chomp $line;
@values = split(' ', $line);
$packets = $values[2];
}
close(HANDLE);
}
system "/sbin/ipfw -q zero $rule";
print "$packets\n$packets\n00:00\nrule $rule\n";
### Unclip
The rule is: 02500 108 11320 allow ip from 200.242.253.6 to any
> > The first problem is that packet size varies greatly -- it could be a
> > single byte (plus header/address information), or quite large,
depending
> > on what the interface type/parameters are set for.
That's where all my problem starts... and ends.
> > The best solution I found for this is SNMP, which is what most of the
"big
> > boys" (PSI Net, for example) use. I do something similar -- sample the
> > "interfaces.ifTable.ifEntry.ifOutOctets" and
> > "interfaces.ifTable.ifEntry.ifInOctets" entries for each interface
> > periodically, and you can calculate the average bandwidth usage per
> > interface pretty easily:
Well. I'll try to find an SNMP agent.
thanks, anyway. :)
done, Aldrin Leal mailto:aldrin@americasnet.com
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