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Date:      Wed, 19 Aug 1998 03:16:47 +1200 (NZST)
From:      Andrew McNaughton <andrew@squiz.co.nz>
To:        laurens van alphen <lva@dds.nl>
Cc:        freebsd-isp@FreeBSD.ORG
Subject:   Re: traffic accounting for interface aliases (how?)
Message-ID:  <Pine.BSF.3.96.980819023736.8497J-100000@aniwa.sky>
In-Reply-To: <001901bdcaee$0b8fe9d0$0a00a8c0@uptight.student.utwente.nl>

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On Tue, 18 Aug 1998, laurens van alphen wrote:

> currently we're looking at a ucd-snmpd/mrtg solution but it seems snmp only
> provides numbers for the entire interface (ed0 in this case, not every
> single ip).
> 
> we use ipfw for firewalling, can i add rules for octet counting? could
> someone provide examples?

ipfw counts both packets and octets eg:

ipfw add 1000 count ip from any to $ip1
ipfw add 1001 count ip from $ip1 to any

ipfw add 1010 count ip from any to $ip2
ipfw add 1011 count ip from $ip2 to any

ipfw add 1020 count ip from any to $ip3
ipfw add 1021 count ip from $ip3 to any

ipfw add 1030 count ip from any to $ip4
ipfw add 1031 count ip from $ip4 to any

etc.

you then want a root crontab which does something like:

( echo ; date ; ipfw show ) >> traffic.log ; ipfw zero

Finally you probably want a simple perl script to process the output and
do something suitable with it.

Andrew


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