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When the client SYN packet arrives at the filter gateway, the SYN agent does not forward the SYN packet, but actively replies the SYN/ACK packet to the client in the name of the server. If the client's ACK packet is received, it indicates that this is normal access. At this time, the firewall sends the ACK packet to the server and completes three handshakes. The SYN agent actually replaces the server to deal with SYN attacks. At this time, the filter gateway itself is required to have strong ability to prevent SYN attacks.陈老太太醒过神，哼了一声道：该骂。Against Uchihito　　鹏一心觊觎探长之职，以强、伟为绊脚石，决逐一除之。伟目睹鹏亲手杀强，悲痛之下，在鹏受警方颁发特别奖章与鹏之际，开枪杀鹏，并于法庭自辩时，痛陈鹏之所境外毒枭九叔与美洲贩毒集团策划了一个妄图将我西南边疆作为贩毒通道的P-S计划。地处边防前哨的勐巴缉毒队闻风而动，但惨遭武装毒贩伏击，缉毒英雄岩疆受命于危难之际。途中，他擒获了扒他钱包的吸毒女赵琪……他乐得差点疯了：真的是小灰撵着他跟来了。高易说了，有了缴获周家的粮仓，以及范家的慷慨相助，我军的粮草问题没有任何问题，请大王放心。