是不是受到 SYN 攻击了
NET: 145 messages suppressed.
ip_conntrack: table full, dropping packet.
NET: 176 messages suppressed.
ip_conntrack: table full, dropping packet.
NET: 36 messages suppressed.
ip_conntrack: table full, dropping packet.
NET: 6 messages suppressed.
TCP: Treason uncloaked! Peer 218.87.163.152:39534/80 shrinks window 2551286723:2551291453. Repaired.
possible SYN flooding on port 80. Sending cookies.
TCP: Treason uncloaked! Peer 195.166.237.40:18686/80 shrinks window 943794378:943795758. Repaired.
TCP: Treason uncloaked! Peer 195.166.237.40:43075/80 shrinks window 1241657759:1241658489. Repaired.
TCP: Treason uncloaked! Peer 195.166.237.40:65250/80 shrinks window 1518263976:1518265356. Repaired.
TCP: Treason uncloaked! Peer 218.58.53.50:43353/80 shrinks window 2501053087:2501058927. Repaired.
TCP: Treason uncloaked! Peer 218.3.9.74:37385/80 shrinks window 3732741844:3732741941. Repaired.
TCP: Treason uncloaked! Peer 218.3.9.74:37446/80 shrinks window 3742460549:3742463877. Repaired.
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SYN 攻击是不是系统负载很大 ?
echo "1" >; /proc/sys/net/ipv4/tcp_syncookies
to enable syncookies
楼上的兄弟 看不懂啊
syncookies是对付synflood攻击比较有效的一种办法