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In this case, the type given to it is NioDatagramChannel清新脱俗，最单纯的女孩子，最理想化的一个女子，人性之初最纯净、最清明透澈的纯真……这些，才是小龙女。Let's first implement the following simple publish-subscribe mode. The code is as follows:German hacker organization "The Hacker's Choice" has released the tool THC SSL DOS. Different from traditional DDoS tools, only one computer that executes a single attack can quickly consume server resources, resulting in server denial of service."Inspired by large institutions, many smaller banks have also started preparations because they have realized that they may also be the next target of attacks and have stimulated strong subjective initiative due to worries," Bolstridge pointed out.It is very convenient to detect SYN attacks. When you see a large number of semi-connection states on the server, especially the source IP address is random, you can basically conclude that this is a SYN attack. We use the netstat tool that comes with the system to detect SYN attacks: