亚洲日本

In TCP implementation, when receiving the SYN request from the client, the server needs to reply the SYN + ACK packet to the client, and the client also needs to send the confirmation packet to the server. Usually, the initial serial number of the server is calculated by the server according to certain rules or adopts random numbers. However, in SYN cookies, the initial serial number of the server is obtained by hash operation and encryption of the client IP address, client port, server IP address, server port and other security values, which is called cookie. When the server suffers from SYN attack and makes the backlog queue full, the server does not reject the new SYN request, but replies the cookie (SYN serial number of the reply packet) to the client. If it receives the ACK packet from the client, the server subtracts 1 from the ACK serial number of the client to obtain the cookie comparison value, and performs a hash operation on the above elements to see if it is equal to the cookie. If equal, complete the three-way handshake directly (Note: At this time, you don't need to check whether this connection belongs to the backlog queue).大殿内一片哗然，全真教弟子有人斥骂，有人拔出宝剑。为平息遍布中华的抗清复明烈火,多尔衮派遣西王吴三桂、定南王孔有德、敬谨亲王尼堪 率领三路大军南下清剿,就在这时多尔衮劳累身亡。鳌拜手握大权,作威作福。中华大地，狼烟滚滚，试问天下，谁主沉浮？SYN Flood在这个烹饪方式花样繁多的时代，烧烤成为了一把打开人类先...小葱知他清醒过来，也直言相告。只是人家做的滴水不漏，每次都将自己算计进来。