[root@host-172-31-0-103 WebRoot]# netstat -nltp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:8005 0.0.0.0:* LISTEN 24693/java
tcp 0 0 0.0.0.0:8009 0.0.0.0:* LISTEN 24693/java
tcp 0 0 0.0.0.0:84 0.0.0.0:* LISTEN 24693/java
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 5458/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 5549/master
[root@host-172-31-0-103 WebRoot]# curl "http://175.25.181.119:84"
curl: (7) couldn't connect to host
看一下你linux系统到175.25.181.119网络正常吗?顺便检查一下端口