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SYN cookies are applied to Linux, FreeBSD and other operating systems. When the half-connection queue is full, SYNcookies does not discard SYN requests, but identifies the half-connection state through encryption technology.尹旭一度认为，是史书记载错了，项羽并不真暴躁着急，刚愎自用。全剧以一个基层卫生医院-幸福里社区医院作为舞台，通过发生在有“暖男先生”之称的主任郭戈，与他的前妻、院长刘云，“前小舅子”刘连，以及餐厅老板雷仁、医院三位护士、社区的热心居民们之间的一场场误会，把阳光、温暖的医务工作演绎得淋漓尽致、妙趣横生，让您捧腹的同时，更传递了正能量。天门口镇世代居住着雪杭两大家族，两家世代不和，彼此争斗。杭家青年杭九枫为了给雪家抹黑，私通遭弃的雪家儿媳阿彩，不料却被刚烈直爽的阿彩激出了爱情的火花。不久，革命浪潮席卷了天门口镇，雪家在战乱中衰落，杭九枫和阿彩成为了红军战士。但阿彩没有答应杭九枫的爱情，雪杭两家延续着世代不相往来的旧怨。If an attacker sends SYN packets quickly with their own undisguised IP address, this is a so-called direct attack. This attack is very easy to implement because it does not involve spoofing or modifying packets below the user layer of the attacker's operating system. For example, he can simply send many TCP connection requests to implement this attack. However, for this attack to work, the attacker must also prevent his system from responding to SYN-ACK packets because of any ACK, RST, or ICMP (Internet? Control? Message? Protocol) will cause the server to skip the SYN-RECEIVED state (go to the next state) and remove the TCB (because the connection has been successfully established or recycled). Attackers can do this by setting firewall rules, causing the firewall to block all packets (except SYN) to reach the server, or causing the firewall to block all incoming packets so that SYN-ACK packets are discarded before reaching the local TCP handler.