[wplug] one armed router

[Frank Carmickle]

This is correct.  But hey if you want to do it it can be done.

FC


On Tue, 12 Dec 2000, Bill Powell wrote:

> The first disclaimer:   I am no networking expert. But I just happened to
> read something the day before getting this note.
> 
> Setting a single network card up to handle two IP address' in this fashion
> forces it into a 'promiscuous' mode that can make it vunerable to a number of
> security issues.  So you might want to do some research on this before
> betting the farm.
> 
> Frank Carmickle wrote:
> 
> > Yes Linux sure can do this.  You must have ip aliasing turned on in the
> > kernel.  Then you can specify something like thisa
> >
> > ifconfig eth0 62.83.152.155
> > ifconfig eth0:0 192.168.1.1
> >
> > I am not sure exactly what you do with ipchains.  If someone doesn't know
> > I will ask a friend of mine.  He is running a configuration like this.
> >
> > FC
> >
> > On Fri, 8 Dec 2000, Keith Wolters wrote:
> >
> > > Can anyone tell me if Linux can be used as a one armed
> > > router?  By that I mean that a Linux box would have
> > > one thernet card with two (or more) IP addresses
> > > associated with the card and when it received a packet
> > > for a different network from one one it was sent from
> > > it would rewrite it and send it out on the same card
> > > it was received on.
> > >
> > > I'm looking to do this because where I work we use
> > > 192.168.0 as our network and I'd like to migrate
> > > either to multiple class C networks or to a subnetted
> > > class B network but to ease the transition I thought
> > > that if we could run two networks over the same wires
> > > for some time we could seperate the renumbering task
> > > from the rewiring task.
> > >
> > > Keith
> > >
> > >
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