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For spoofing attacks, the first thing to consider is to choose the address. For the attack to succeed, the host on the spoofed IP address must not respond to any SYN-ACK packets sent to them. A very simple method that an attacker can use is to disguise only one source IP address, and this IP address will not respond to SYN-ACK packets, perhaps because there is no host on this IP address at all, or because some configuration has been made to the address or network properties of the host. Another option is to disguise many source addresses, and attackers will assume that hosts on some of these disguised addresses will not respond to SYN-ACK packets. To implement this method, you need to recycle the addresses on the list of source IP addresses that the server wants to connect to, or make the same modifications to hosts in a subnet.玉米坐在大姐姐膝盖上，眨巴着眼睛用心地听。嗯……徐文长稍有疑虑，连忙走到门前开了个缝。爱尔兰喜剧《年少轻狂》凭借前两季积累人气，并获众多喜剧大奖，第三季于2020年回归。Conor和Jock两兄弟已经退学，开始努力应对成年人要面对的挑战，然而他俩还是一副一事无成的样子——想尽办法逃离家务、手忙脚乱地照顾“小Jock”Star……加上他们搞砸了学校毕业舞会、搞砸了自己“精心策划”的电视打劫，年龄在他俩身上真的没有转变为更多智慧……和前两季一样的是，两兄弟的故事依旧充满笑声、温情和傻傻的恶作剧。而青莲哩，避其锋芒，看起来像怕了他，甚至可怜巴巴地要跟狗争骨头，却害得他受更重的惩罚，正是损之而益。俞大猷可以高高兴兴回去领功了，但是某些人躺着也能中枪。