Re: Multiple link, policy routing and link not in defaut route...

Mandi! cronolog+lartc
  In chel di` si favelave...

> Rather than disable rp_filter (by setting to 0 on all interfaces I presume),
> what about setting it to 2 for Loose mode instead, and only on the affected
> interfaces, so only those interfaces change behaviour?
> Loose mode would allow the packet as long as there is a valid route on any
> interface, instead of the specific interface it comes in.  So as long as a
> default route exists anywhere, the packet should pass.

Bingo!


> Potentially this opens up the interface to spoofed traffic, as it would now
> allow traffic with source IP belonging to subnets on your private interfaces,
> because obviously you would have routes to those too.  But that can be solved
> easily with iptables rules.  Generally I block all packets with source in all
> private IP ranges on Internet-facing interfaces, with exceptions if necessary
> e.g. for external DMZ etc.

I do exactly the same things. To at least have notices, i've also
enabled 'log_martians'.


Many thanks!!!

-- 
dott. Marco Gaiarin				        GNUPG Key ID: 240A3D66
  Associazione ``La Nostra Famiglia''          http://www.lanostrafamiglia.it/
  Polo FVG   -   Via della Bontà, 7 - 33078   -   San Vito al Tagliamento (PN)
  marco.gaiarin(at)lanostrafamiglia.it   t +39-0434-842711   f +39-0434-842797

		Dona il 5 PER MILLE a LA NOSTRA FAMIGLIA!
      http://www.lanostrafamiglia.it/index.php/it/sostienici/5x1000
	(cf 00307430132, categoria ONLUS oppure RICERCA SANITARIA)