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If the command in the above example does not use-s to specify the original source address in the corresponding rule, After the modification is completed, The source address in the rule you modify will automatically change to 0.0. 0.0/0 (this IP represents an IP address that matches all network segments), At this time, the corresponding action of-j is REJECT, Therefore, if the original source address of the rule is not specified when executing the above command, all IP requests will be rejected (because the original source address is not specified, the source address of the current rule will automatically change to 0.0. 0.0/0). If you are using ssh to remotely go to the server for iptables setting, your ssh request will also be blocked.By clicking the check box on the page, When selected, add an attribute isflag, Delete the attribute isflag when it is not checked, And then a delay of 2 seconds, After 2 seconds, re-judge the ID on the attribute of ISFLAG in all check boxes on the page and store it in an array. Then the proxy function calls the method of the ontology function to send all the ID delayed for 2 seconds to the ontology method at one time. The ontology method can obtain all the ID and send AJAX request to the server. In this way, the request pressure of the server is relatively reduced.? ? ? ? ? 2) Build Redmine Tool for Project Management1968年，北京的钟跃民和好友袁军、郑桐等整日游荡在大街上，为单调的生活寻求着刺激。在一场钟跃民看来似乎平常的不能再平常的恶作剧中，高雅、纯情、浪漫的周晓白无意中闯进了钟跃民的生活，二人的生活悄无声息的改变着。晓白的高雅、浪漫唤醒了潜藏在跃民内心深处的一种久违了的渴望。在袁军、郑桐等童年伙伴的戏弄下，钟跃民向晓白展开了充满嬉闹而又看似认真的追求。但是他却不知道，“这是他一生中唯一一次也是最后一次婚姻。”葫芦将目光转向他，问道：你也觉得胡镇罪有应得？胡钧紧闭嘴唇，一言不发地点点头。Of all American journalists, I think the most outstanding one is Haret Aban of the New York Times. Due to Aban's years of experience in China, his rather sophisticated treatment of people and his reputation as a Times, he has made quite a wide range of friends. He and Chiang Kai-shek's wife Song Meiling are also very close friends. He doesn't have to be like me. As a reporter of the Japanese News Agency, he has to be busy with the morning and evening reports every day. He just needs to pick up some important information and transmit it. So he is in an extremely advantageous position. Although I am in Shanghai, I have always been concerned about the U.S. Policy towards Japan and developments towards China, so I often exchange views and intelligence with Aban.