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Activity monitor is a device that can detect and interfere with traffic to the server. Like firewalls, it is not a necessary device in network routing. A typical monitor, like the ACK disguised firewall/proxy in 7, has an additional capability, that is, if it finds that the SYN packet originates from an attacker source address it knows, it will immediately send the disguised RST packet to the server. Activity monitors are practical because they are cheap and easy to deploy (compared with schemes based on firewalls and input source filtering), and can still protect the entire server network without requiring each server operating system to implement a terminal-based solution.　　《我变美的那夏天》是部多代电视剧，剧情包括女主与两兄弟之间的三角恋，亦有各个母亲和自己子女的关系及女性友谊的题材。厌世的作家和他创业的妻子一边应对濒临破裂的婚姻，一边处理富裕生活中各种荒唐恼人之事Q: Can you introduce your personal information and relevant background?In fact, the most useful thing about the threshold is the discussion about the shooting speed. The most important thing is the assassin's assassination and Li Ang's various skills. The reason why Li Ang took the flying soldiers was also because of the theory of shooting speed, which led to the strength of Li Ang's mixed arms.苏岸从俘虏了徐家家将处得知，那小院有着严密的机关防卫，刚刚他们在那里吃了大亏。Since http is based on tcp, You need to complete a three-way handshake to establish a tcp connection before you can start http communication, Therefore, when http flood attacks are carried out, it is not possible to use forged source ip addresses to launch attacks. An attacker will typically use an http proxy server, Not only can the source be hidden from being traced, It also improves attack efficiency-after the attacker connects to the proxy server and sends the request, You can directly disconnect from the proxy server and start connecting to the next proxy server, At this time, the http connection between the proxy server and the target web server is still maintained, and the web server needs to continue to accept and process data. An efficient http flood attack should continuously send http requests for different resources and pages, and request resources that cannot be cached as much as possible (such as keyword search. User-related information, etc.)