看看514端口是否被监听
tcp6 0 0 :::5002 :::* LISTEN 29416/java
tcp6 0 0 192.168.15.78:9200 :::* LISTEN 4410/java
tcp6 0 0 192.168.15.78:9300 :::* LISTEN 4410/java
tcp6 0 0 127.0.0.1:9600 :::* LISTEN 29416/java
udp 0 0 0.0.0.0:514 0.0.0.0:* 29416/java
udp 0 0 0.0.0.0:5002 0.0.0.0:* 29416/java
udp 0 0 0.0.0.0:5003 0.0.0.0:* 29416/java
使用tcpdump命令在514端口从抓包,确认有数据包发送过来
- tcpdump -i em1 udp port 514 -c 100 -n -vvv
复制代码
tcpdump: em1: No such device exists
(SIOCGIFHWADDR: No such device)