[Novalug] interface to interface proxy

Jon LaBadie novalugml@jgcomp.com
Thu Mar 26 17:40:38 EDT 2015


On Fri, Mar 27, 2015 at 10:30:34AM +1300, Mark Smith via Novalug wrote:
> i decided to run an experiment.  i setup a vbox instance and loaded
> three interfaces onto it.
> 
> 	eth0 - bridged for my connectivity pleasure
> 	eth1 - host-only over vboxnet0
> 	eth2 - host-only over vboxnet1
> 
> i setup the bridge on my guest:
> 
> 	brctl addbr br0
> 	brctl addif eth1
> 	brctl addif eth2

addif requires a bridge name to add to.

   brctl addif br0 eth1


> 	ifconfig eth1 inet 0.0.0.0
> 	ifconfig eth2 inet 0.0.0.0
> 	ifconfig br0 inet 0.0.0.0 up
> 
> then i ran a sniffer and a transmitter on my host like so:
> 
> 	tcpreplay -M 1 -i vboxnet0 myfile.pcap
> 	tcpdump -i vboxnet1 -n
> 
> i saw none of the expected traffic.  it could just be that i was horking
> up with the vbox interfaces.
> 
> is this correct?  if so, what did i do wrong?
> 
> 
> On Thu, Mar 26, 2015 at 09:31:23PM +1300, Mark Smith via Novalug wrote:
> > damn.  that sounds exactly what i want.  good job Derek!!
> > 
> > On Thu, Mar 26, 2015 at 12:59:58AM -0400, Derek LaHousse wrote:
> > > Sounds like you want a bridge.  bridge control (brctl).  But that will
> > > only get you the equivalent of a switch.
> > > 
> > > On Wed, Mar 25, 2015 at 11:43 PM, Mark Smith via Novalug
> > > <novalug@firemountain.net> wrote:
> > > > does anyone know of a proxy to proxy interface that i can run on a
> > > > computer such that all packets arriving on one interface are immediately
> > > > sent directly to another interface?  logically, it would be like this:
> > > >
> > > >         proxy -i eth1 -o eth2
> > > >
> > > > the ethernet devices should not have an assigned address.
> > > >
> > > > can i use iptables to do this?
> > > >
> > > > --
> > > > Hei konā mai
> > > > Mark Smith
> > > > mark@winksmith.com
> > > > **********************************************************************
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> > 
> > -- 
> > Hei konā mai
> > Mark Smith
> > mark@winksmith.com
> > **********************************************************************
> > The Novalug mailing list is hosted by firemountain.net.
> > 
> > To unsubscribe or change delivery options:
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> 
> -- 
> Hei konā mai
> Mark Smith
> mark@winksmith.com
> **********************************************************************
> The Novalug mailing list is hosted by firemountain.net.
> 
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>>> End of included message <<<

-- 
Jon H. LaBadie                  novalugml@jgcomp.com
 11226 South Shore Rd		(703) 787-0688 (H)
 Reston, VA  20190		(703) 935-6720 (C)



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