for a passive TCP connection will happen after 63seconds.
tcp_syncookies - BOOLEAN
- Only valid when the kernel was compiled with CONFIG_SYNCOOKIES
+ Only valid when the kernel was compiled with CONFIG_SYN_COOKIES
Send out syncookies when the syn backlog queue of a socket
overflows. This is to prevent against the common 'SYN flood attack'
- Default: FALSE
+ Default: 1
Note, that syncookies is fallback facility.
It MUST NOT be used to help highly loaded servers to stand