Re: [Users] rp_filter on ipsec0

From: Stephen J. Bevan (stephen_at_dino.dnsalias.com)
Date: Thu Nov 28 2002 - 17:49:15 CET


martin f krafft writes:
> also sprach Stephen J. Bevan <stephen_at_dino.dnsalias.com> [2002.11.28.0430 +0100]:
> > ipsec0 can have rp_filter set to 1, it is eth0 that has to be 0 and
> > then only in certain situations.
>
> Could you give me some examples of such certain situations?

Typically rp_filter is not an issue when doing host<->host but it is
when FreeS/WAN is acting as a gateway and/or your routing is
asymmetric. If you are not sure then I suggest setting it to 0. If
you really want to run with it set to 1 then make sure IPsec works
first with it set to 0, then re-test with it set to 1.
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