On Monday 10 November 2003 9:14 am, Marc Lucke wrote:
> Hi,
>
> Do the iptables counters include layer 2 ethernet packet headers? If
> so, how much traffic is this - is it a set amount?
No, because you may not be using ethernet.
Netfilter can be used for packets across ethernet, 802.11, PPP modems - all
sorts of network transports.
Packet and byte counters in netfilter are IP (OSI layer 3) and upwards.
You can check this easily by creating a rule matching something specific (eg
ping packets), send a known amount of traffic through the box (or measure it
with a packet sniffer / protocol analyser such as ethereal, which will give
you a detailed view of the contents of the packets), and then check what the
counters say.
Antony
--
Anything that improbable is effectively impossible.
- Murray Gell-Mann, Nobel Prizewinner in Physics
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