lkml.org 
[lkml]   [2005]   [Jun]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH] fix small DoS on connect() (was Re: BUG: Unusual TCP Connect() results.)
From
On Mon, Jun 13, 2005 at 07:21:48AM +0200, Willy Tarreau wrote:
>
> > A much better place to do that is netfilter. If you do it there
> > then not only will your protect all Linux machines from this attack,
> > but you'll also protect all the other BSD-derived TCP stacks.
>
> Netfilter already blocks simultaneous connection. A SYN in return to
> a SYN produces an INVALID state.

Any reason why that isn't enough?
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-06-13 07:30    [W:0.261 / U:0.284 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site