亚洲日本欧美另类_亚洲日本欧美另类

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).* * Yes, these plants are real in the Muggle world * *延续第一季的故事Data show that there were more than 6,000 companies engaged in private lending intermediary business when P2P platforms were in hot demand in China. After three years of survival of the fittest, according to incomplete statistics, there are only 1,958 platforms left. It can be predicted that the number of P2P platforms will continue to decrease. At present, some financial intermediary companies in Yixin, Auction, Qifang and Qingdao are relatively recognized. The following is a typical analysis of these P2P enterprises. Auction and loan: unsecured and unsecured mode. Auction and loan was established in Shanghai in 2007. It is a typical P2P online credit platform in China and can be used as a typical sample of P2P websites in China. Auction and loan use competitive bidding to realize the online lending process. The loan interest rate is determined by the supply and demand market of the borrower and the bidder. The enterprise does not charge other fees, and the main profit comes from service fees. The main process is as follows: the borrower releases the loan information, lists the relevant information such as the reason and amount of the loan, and gives the highest interest rate. Investors participate in the bidding, and the person with the lower interest rate wins the bid. The web page will show the borrower's loan progress and the number of bids completed. If the total amount of bid funds meets the needs of the borrower during the fund raising period, his loan will be declared successful. If the required funds cannot be raised within the prescribed time limit, the loan plan will be suspended. This mode of risk control has two characteristics:Purple red: loquat, banyan, cactus fruitTop one, son