端口检测方法

windows

检测tcp端口

telnet 172.16.4.56 8090

检测udp端口
https://docs.microsoft.com/en-us/sysinternals/downloads/psping

Linux

检测tcp端口

nc -z -w 1 172.16.4.56 8090

检测udp端口

nc -u -z -w 1 172.16.4.56 8090