基于DM642的网络传输，协议为TCP/ip协议，很不错-network transmission, the agreement for TCP / ip agreement is pretty good

一个网络端口扫描软件，它可以显示出所有开放的TCP/IP，UDP端口，并可映射出端口被哪些应用程序使用。 -a network port scanning software, which can show all open TCP / IP and UDP ports, Ports can map out what application was used.