Mailinglist Archive: opensuse-security (757 mails)

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is it possible to disable SYN flooding protection for port 80?
Hi,

my webserver reports sometimes a

Jan 20 14:02:11 xxxxxxxx kernel: possible SYN flooding on port 80. Sending
cookies.
Jan 20 14:02:11 xxxxxxxx kernel: klogd 1.3-3, ---------- state
change ----------
Jan 20 14:02:11 xxxxxxxx kernel: Inspecting /boot/System.map-2.2.18
Jan 20 14:02:11 xxxxxxxx kernel: Loaded 10080 symbols from
/boot/System.map-2.2.18.
Jan 20 14:02:11 xxxxxxxx kernel: Symbols match kernel version 2.2.18.
Jan 20 14:02:11 xxxxxxxx kernel: Loaded 258 symbols from 2 modules.

So I think its no attack than a high traffic on my webserver. So what can I
do? Is it possible to disable the SYN flood protection for port 80 (I didn't
like to it) or can I modify the detection parameters of this protection
routine? (I didn't like to read the kernel sources and re-compile it :-)

Thx a lot... Kai

EOT


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