> Geert Uytterhoeven <Geert.Uytterhoeven@cs.kuleuven.ac.be> writes:
>> On Wed, 22 Jul 1998, Chris Black wrote:
>> > Jul 21 20:47:58 isrec-insect kernel: Warning: possible SYN flood from
>> > 192.168.1.12 on 192.168.1.1:20817. Sending cookies.
...
> The warning simply means that connection requests are comming in faster
> than the server can process them.
I got the following on 2.0.34 while debugging some network software I
was writing. At no time did I have more than one client at a time
trying to connect to the server. The listen queue is short, but that
shouldn't matter if only one client at a time is trying to connect, or
should it?
Is SYN flooding a threat over the loopback device?
Jul 19 23:19:12 altair kernel: Warning: possible SYN flood from 127.0.0.1 on 127.0.0.1:23000. Sending cookies.
Jul 19 23:29:22 altair kernel: Warning: possible SYN flood from 127.0.0.1 on 127.0.0.1:23000. Sending cookies.
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