Bug#520667: linux-image-2.6.26-1-686: No warning when half-open TCP queue is full
On Sat, Mar 21, 2009 at 07:47:36PM +0100, Olaf van der Spek wrote:
> Package: linux-image-2.6.26-1-686
> Version: 2.6.26-13lenny2
> Severity: normal
>
> Hi,
>
> When the half-open TCP connection queue is full and syn cookies are enabled, you get a message like "kernel: possible SYN flooding on port 2710. Sending cookies."
> However when syn cookies are disabled, you don't get any message (in kern.log), although connections to your server are timing out.
> Could such a message be added?
> Maybe with a suggestion to increase the size of that queue or to enable syn cookies.
That should be discussed with the upstream developers, the Debian BTS is not
the best way to change this. You can reach them at linux-net@vger.kernel.org
Cheers,
Moritz
Reply to: