Thank you.  This will give me something to do over the weekend.

On 10/20/2012 9:50 AM, Lisa Kachold wrote:
> Hi Derek,
>
> On Sat, Oct 20, 2012 at 8:38 AM, Derek Trotter 
> <expat.arizonan@gmail.com <mailto:expat.arizonan@gmail.com>> wrote:
>
>     My ISP imposes a monthly quota.  If the total amount of data I
>     download and upload exceeds that quota I get billed extra.
>     Everything I send or receive passes through my full time linux
>     box. Is there something I can install on it that would monitor and
>     log how much data passes through eth0?
>
>     thanks
>
> <snip>
>
> You can enable iptables to do this:
>
> http://www.cyberciti.biz/faq/linux-configuring-ip-traffic-accounting/
>
> It should look like this:
>
> iptables -N INET_OUT
> iptables -N INET_IN
> iptables -A FORWARD -j INET_IN
> iptables -A FORWARD -j INET_OUT
> iptables -A INPUT -j INET_IN
> iptables -A OUTPUT -j INET_OUT
>
> To see your data:
>
> iptables -L -v -n
>
> To see just your In:
>
> /sbin/iptables -v -n -L INET_IN
>
> To see just your Out:
>
> /sbin/iptables -v -n -L INET_OUT
>
> Depending on your distro, your iptables files will be saved in a 
> directory.
>
> You can use:
>
> iptables-save
>
> to save the recipe to persistent state (past a reboot or reset).
>
> "Talk is cheap. Show me the code."
> - Linus Torvalds
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