Messages in this thread | | | Date | Mon, 13 Sep 2004 06:18:47 +0200 | From | Willy Tarreau <> | Subject | Re: Linux 2.4.27 SECURITY BUG - TCP Local and REMOTE(verified) Denial of Service Attack |
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On Mon, Sep 13, 2004 at 04:30:36AM +0100, Paul Jakma wrote:
> More specifically, BGP should have treated TCP resets as a transient > error, to be expected (indeed, they /cant/ be a sign that a link is > down - if you can receive a RST the link or path is patently quite > ok).
The application level does not always distinguish between TCP RST and error generated by the local system because of a "network unreachable" due to a link down and a lost route.
> The BGP state machine should instead, in normal operation, have > only treated Hold time expired as the definitive sign of "peer is > down" and allowed reconnects.
It should not necessarily wait for the time-out, but at least wait for a few reconnect errors.
Regards, willy
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