When the server provides some UDP-based services, such as DNS, SMTP, NTP, etc., and finds some requests, in which the Response message is larger than the Request message, the Attacker sends a Request message that forges the source IP, and the source IP forges the IP address of the victim. After receiving the Request message, the server replies the "enlarged" Response message to the victim, thus realizing the amplification of traffic. The principle is roughly as follows:
How should we defend against this attack? First of all, as users, we try our best to download APP from regular channels and surf the Internet in a civilized manner, and try our best not to make broilers. Secondly, as a service manufacturer, when the server is attacked by DDoS, we try our best to improve the processing capacity of the server. When the processing capacity of our server is greater than that of the attacker, these attacks are nothing to the server. Finally, under normal circumstances, the processing capacity of our server is generally lower than that of the attacker. In view of this situation, there are currently the following methods: 1. Violent methods, such as setting an access frequency threshold, and rejecting when the number of accesses per IP unit time exceeds this threshold; For a certain service, if the instantaneous request is too large, choose to directly refuse to ensure the normal operation of other services; This method may result in normal users not being able to use it. 2. Verification code. In order to prevent normal users from being injured by exposure methods, at present, service providers will send verification codes to "users" when receiving a large number of requests. If it is a real user, it will input verification codes, but if it is a broiler, it will not. Through this method, the real user and the broiler will be distinguished.
他收回目光，垂下眼睑，轻声回道：好看。
不过黎章啊，你们还是往东去打猎比较好。
放眼东海，没有船主办不成的事，公子只管开口。
Public void method1 () {
监製Jazz透露：同盟「虽然有部份城寨演员参与，但故事是截然不同。今次会找来鲍起静（鲍姐）做『武则天』，在剧中管天下，而剧情讲到现代世界的角力，还有一些神秘情节，主要围绕陈展鹏、胡定欣、陈山聪、姚子羚之间的竞争。
故事始于1949年5月，解放军进攻长海市前夕，城里发生了一连串令人不安的事件。美军仓库被抢，美国公民遇害。西方在华使团认为这是对其在华利益的严重挑衅，因此在真相未白的情况下，把矛头指向了解放军，美国的巡洋舰已经驶到了江口，敌人试图把外国军队拖入中国的内战，战争一触即发。
ps：看《回到过去当作家》背后的独家故事，听你们对小说的更多建议，关注公众号（微信添加朋友-添加公众号-输入dd即可），悄悄告诉我吧。
家境平平、工作出色、气质出众的林菲与相爱多年却一无所有的男友刘洋结束爱情长跑，决定“裸婚”，结果却遭到了林母的强烈反对拼死也要阻碍。
少女笑意盈盈，翩翩而来，就像天上的仙。
然后呢？贼人杀进城来。
陈青山看在眼里，有些明白了刘邦为何会派吕雉前来，同时赞叹：此女非同小可啊。
不是笑你说的内容，而是你说话的样子真的挺好笑的。
有人不以为然道：近日少雨，天气炎热，春旱正重，河水低浅也是正常的。
市大学生联赛，明洋女排队对战老牌劲旅星悦队再次失败，陷入解散危机。机缘巧合之下，有着排球天赋的少女易安乐加入了明洋队，但身高劣势和体能限制令队友对她产生了质疑。易安乐用自己的善良、勇敢和毅力化解了队友间的矛盾，并与富家千金邱元雅、打工女孩盛芷、偷练排球的顾柏柏等人建立了友谊。这支本不被看好的球队一路由市联赛挺进了省联赛。然而，成长之路并非想象般顺利，易安乐陷入与职排预备队主力叶满阳、青梅竹马的傅安宴和邱元雅之间的情感纠葛，盛芷家庭遭遇困境面临退队，队员间的内讧使明洋队征战省联赛时惨遭失败。面对各种压力，明洋队员们最终团结一致拿到了省级联赛最后一个晋级名额。在新的赛场上，她们得到了郎平、惠若琪等女排前辈们的鼓励，不仅夺得全国大学生联赛总冠军，也找到了属于每个人的人生目标。
Keep your name, keep your name and look at it slowly.
除了他对尹旭其人的认同和前景的认同，还有就是他的个人原因，为的就是实现自己的价值和抱负。
