Getting data transfer without broadcast traffic

I have a server that is co-located on a shared network. There is a small amount of broadcast traffic (averaging around 4KB/sec) which doesn't seem much but over a month adds up to about 9.9GB and therefore it makes the figures I get from ifconfig about data transferred wrong.

Is there a way to get a figure for amount of data transferred excluding any broadcast traffic that doesn't get through the firewall (and preferably not using a simple bit of maths to subtract the average but actually excluding it live). I'm using iptables so I would presume that it would have to be done with this somehow.

Thanks in advance,
Alex Brett
alex.brett@loho.co.uk

 

 

 

 

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