大学网络安全技术考试试卷，希望对学弟学妹们有帮助，

1．　　下列不属于包过滤检查的是（ D ）

A．　　源地址和目标地址

B．　　协议

C．　　源端口和目标端口

D．　　数据包的内容

-University of network security technology exam papers, and they hope to学弟学妹们helpful, 1. The following does not belong to the packet filter inspection (D) A. Source address and destination address B. Agreement C. Source port and target port D. The contents of packets