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星光灿烂剧照(10张)On ntp servers, a series of mode7 debugging interfaces are usually implemented, and the monlist request in the interface can obtain the ip address and other information of the last 600 clients synchronized with the target ntp server, and only needs to send a small packet to start a large number of continuous udp corresponding data packets containing ip address information and other data.张槐一边命人款待王公公，一边和众人退入后堂商议。Now, let's imagine why these "checkpoints" are called "chains" in iptables. As we know, The purpose of a firewall is to match "rules" for passing messages, Then execute the corresponding Action, So, when the message passes through these checkpoints, You must match the rules on this level, However, there may be more than one rule on this level, But there are many rules, When we put these rules in a chain, A "chain" has been formed. Therefore, we imagine each "checkpoint" as shown in the following figure. In this way, it is more appropriate to call them "chain". Each message passing through this "checkpoint" must match all the rules on this "chain". If there are qualified rules, the corresponding actions of the rules will be executed.　　二者，斩杀西楚国第一战将的功勋也在向他招手，激励着他尽一切可能拿下这份天大的功劳