On Tue, 17 Jun 2003, Simon Kirby wrote:
> On Tue, Jun 17, 2003 at 01:36:35PM -0700, David S. Miller wrote:
> > I have no idea why they do this, it's the stupidest thing
> > you can possibly do by default.
> > If we thought it was a good idea to turn this on by default
> > we would have done so in the kernel.
> > Does anyone have some cycles to spare to try and urge whoever is
> > repsponsible for this in Debian to leave the kernel's default setting
> > alone?
> Sure, I can do this. But why is this stupid? It uses more CPU, but
> stops IP spoofing by default. Specific firewall rules would have to be
> created otherwise. And the overhead only really shows when the routing
> table is large, right?
Personally I think rp_filter by default is the only good choice
(security/operational-wise). It's typically not useful when you have a
lot of routes, though.. but as the 99.9% of users _don't_, it still seems
like a good default value.
Pekka Savola "You each name yourselves king, yet the
Netcore Oy kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings