tcp: doc : fix the syncookies default value
syncookies is on for default since in commit e994b7c901
(tcp: Don't make syn cookies initial setting depend on CONFIG_SYSCTL).
And fix a typo of CONFIG_SYN_COOKIES.
Signed-off-by: Shan Wei <davidshan@tencent.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -420,10 +420,10 @@ tcp_synack_retries - INTEGER
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for a passive TCP connection will happen after 63seconds.
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tcp_syncookies - BOOLEAN
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Only valid when the kernel was compiled with CONFIG_SYNCOOKIES
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Only valid when the kernel was compiled with CONFIG_SYN_COOKIES
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Send out syncookies when the syn backlog queue of a socket
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overflows. This is to prevent against the common 'SYN flood attack'
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Default: FALSE
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Default: 1
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Note, that syncookies is fallback facility.
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It MUST NOT be used to help highly loaded servers to stand
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