1. Encourage consumers to leave their e-mail addresses. E-mail is still one of the communication methods that American consumers are accustomed to and keen on. Ordinary American consumers check E-mail many times a day. For sellers, effective e-mail marketing will bring you considerable transformation.葫芦哥哥，来，我跟你说说这人伦大道。The principle is that syn messages are first responded to syn_ack by DDOS protection system. With a specific sequence number (recorded as a cookie). The real client returns an ack and the Acknowledge number is cookie+1. The fake client will not respond. In this way, we can know that the clients corresponding to those IP are real and add the real client IP to the white list. The next access passes directly, while other forged syn messages are intercepted. The following is a schematic diagram of protection:?因此轻率地认为江陵空虚，随即带领军队向夷陵发起了进攻。有点懒又有点馋的熊二虽然总是各种失误犯错，内心却一直梦想成为一位英雄，以此获得大家特别是哥哥熊大的认可。原本是个研究生，但某天却穿越到了战国时代。
