From: Patrick McHardy <kaber@trash.net>
To: Alexander Samad <alex@samad.com.au>
Cc: "David S. Miller" <davem@redhat.com>,
herbert@gondor.apana.org.au, netdev@oss.sgi.com,
netfilter-devel@lists.netfilter.org
Subject: Re: [RFC, PATCH 4/5]: netfilter+ipsec - policy lookup
Date: Wed, 24 Mar 2004 03:39:50 +0100 [thread overview]
Message-ID: <4060F4F6.5020400@trash.net> (raw)
In-Reply-To: <20040324021514.GM3387@samad.com.au>
Alexander Samad wrote:
> Hi
>
> Think their might be a problem with this patch.
>
> Potientially a packet could traverse the pre, forward and the post
> routing, at which point it can be SNAT'ed or MASQ'ed and then re
> injected into route_me_harder. This potiential could allow packets to
> be rerouted based on the new src/dst addresses differently to the intail
> packet but this new packet doesn't traverse any of the chains with the
> new information.
This is just as without the patches, SNAT in POST_ROUTING never causes
a packet to re-traverse the hooks. There is one minor difference,
packets which match a policy after NAT stop traversing the hooks at
NF_IP_PRI_NAT_SRC priority. I will fix this this for the final version.
Regards
Patrick
>
> Alex
>
> On Thu, Mar 18, 2004 at 05:32:23PM +0100, Patrick McHardy wrote:
>
>>This patch adds policy lookups to ip_route_me_harder and makes NAT
>>reroute for any change that affects route/policy lookups.
>>
>
>
>
next prev parent reply other threads:[~2004-03-24 2:39 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-08 11:03 ip_route_me_harder -> xfrm_lookup Herbert Xu
2004-03-08 14:46 ` Patrick McHardy
2004-03-08 19:58 ` David S. Miller
2004-03-18 16:31 ` Patrick McHardy
2004-03-18 16:31 ` [RFC, PATCH 1/5]: netfilter+ipsec - nf_reset Patrick McHardy
2004-03-19 6:08 ` David S. Miller
2004-03-18 16:31 ` [RFC, PATCH 2/5]: netfilter+ipsec - output hooks Patrick McHardy
2004-03-19 6:09 ` David S. Miller
2004-03-19 10:59 ` Herbert Xu
2004-03-18 16:32 ` [RFC, PATCH 3/5]: netfilter+ipsec - input hooks Patrick McHardy
2004-03-19 6:15 ` David S. Miller
2004-03-19 11:47 ` Herbert Xu
2004-03-19 16:17 ` Patrick McHardy
2004-03-19 21:05 ` Herbert Xu
2004-03-19 11:07 ` Herbert Xu
2004-03-19 11:46 ` Herbert Xu
2004-03-19 16:29 ` Patrick McHardy
2004-03-18 16:32 ` [RFC, PATCH 4/5]: netfilter+ipsec - policy lookup Patrick McHardy
2004-03-19 6:16 ` David S. Miller
2004-03-19 15:30 ` Patrick McHardy
2004-03-19 11:51 ` Herbert Xu
2004-03-19 16:34 ` Patrick McHardy
2004-03-19 21:05 ` Herbert Xu
2004-03-20 14:01 ` Patrick McHardy
2004-03-21 6:35 ` Herbert Xu
2004-03-21 22:16 ` Herbert Xu
2004-03-21 23:34 ` Patrick McHardy
2004-03-22 2:03 ` Herbert Xu
2004-03-22 2:29 ` Patrick McHardy
2004-03-24 2:15 ` Alexander Samad
2004-03-24 2:39 ` Patrick McHardy [this message]
2004-03-24 3:33 ` Alexander Samad
2004-03-18 16:32 ` [RFC, PATCH 5/5]: netfilter+ipsec - policy checks Patrick McHardy
2004-03-19 6:19 ` David S. Miller
2004-03-19 16:24 ` Patrick McHardy
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