[plug] Track traffic on an aliased interface

[bwarff]

once you have made the correct changes, the command "iptables-save" will dump the 
current iptables configuration to stdout,redirect this to overwrite the current bootup config (distro dependant)
eg: 
	iptables-save > /path/to/current/iptables

on a fedora/redhat machine this path is /etc/sysconfig/iptables



On Thu, 16 Dec 2004 14:02:03 +1100
Onno Benschop <onno at itmaze.com.au> wrote:

> > Could you use some basic iptables rules to log traffic to/from the
> > aliased addresses?  Then you can see the counts with "iptables -vL" 
> > they don't wrap at ~2GB either!  I once did this to certain traffic on a
> > wireless gateway with far too many aliased interfaces (read dodgy
> > router) many moons ago, worked well for me.
> > 
> > If you already have a firewall setup it is already counting, just add a
> > few more specific rules.  If the box has no firewall and is already set
> > to allow everything, you can just make rules allowing what you want to
> > count and that should do it.
> > 
> > If you then wanted to graph it, some simple shell magic of the iptables
> > -vL output called from mrtg will work fine.
> 
> Whoot!
> 
> Ok, does this keep over a shut-down, or do I need to log it also :-)
> 
> Cheers,
> 
> Onno Benschop 
> 
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