tcp syn port scanning tcpsyn端口扫描
TCP SYN Scanning is also known as half open scanning.
TCP SYN 扫描也称为 半开扫描。
Description: TCP SYN scanning is a variant of port scanning.
描述：TCP SYN扫描是端口扫描的变体。
The improved strategy can defense both common port-scanning and the secret scanning with the symbol of SYN.
这种改进方案不仅能有效防御常规的端口扫描，也能有效防御syn隐蔽扫描。
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