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Chapter IV Sound and Light Signals庞夫人貌似勉为其难地接过银锭，唤来丫鬟，小声吩咐了两句，才叫她拿下去。SYN attack is a kind of DOS attack. It takes advantage of TCP protocol defects and consumes CPU and memory resources by sending a large number of semi-connection requests. SYN attacks can not only affect hosts, but also harm network systems such as routers and firewalls. In fact, SYN attacks can be implemented as long as these systems turn on TCP services no matter what systems are targeted. As can be seen from the above figure, the server receives the connection request (syn=j), adds this information to the unconnected queue, and sends the request packet to the client (syn=k, ack=j+1), then enters the SYN_RECV state. When the server does not receive an acknowledgement packet from the client, it retransmits the request packet and does not delete this entry from the non-connection queue until the timeout. With IP spoofing, SYN attacks can achieve good results, Typically, clients forge a large number of non-existent IP addresses in a short period of time, SYN packets are continuously sent to the server, and the server replies to the confirmation packets and waits for the confirmation of the customer. Since the source address does not exist, the server needs to continuously resend until it timeout. These forged SYN packets will occupy the unconnected queue for a long time, normal SYN requests will be discarded, the target system will run slowly, and in serious cases, the network will be blocked or even the system will be paralyzed.It is supported to share the photos with friends so that all friends in WeChat address book can see them. They can also comment on and praise the photos.Murderer Liang's Husband这是一部女性题材的电视剧，通过女性的视角，探讨在现实生活中女性复杂的情感和伦理道德问题。每一集一个独立的故事。每集故事都反映女性的个人情感上的不幸遭遇和千奇百怪的婚恋现象。《放爱一条生路》表现了一个男人疯狂地爱上一个女人，女人承受不了他偏执的爱而选择了逃离；《继母》反映了作为继母如何赢得前妻子女的信任，子女们把她当作亲身母亲对待而取代了亲生母亲的位置；《你要的爱》表现了一个女人如何爱上了见义勇为的残疾青年的故事。本剧集旨在引导女性自尊自爱自强。