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Code Block
firewall-cmd --zone=wifimon --list-ports 
5044/tcp
firewall-cmd --zone=wifimon --list-sources
10.10.10.111/32 10.10.10.15/32


Note
titleNOTE

The In the configuration of Logstash firewall, 10.10.10.111 and 10.10.10.15 above are  are the IPs of the servers where Filebeat agents are installed. The For the other components, their IPs are described at 04 Streaming Logs Into ELK Cluster section above.

SSL/TLS Certificates

The cluster communication is secured by configuring SSL/TLS encryption. The elasticsearch-certutil was used to generate a CA certificate, utilized for signing the certificates of the cluster components. This utility comes with the elasticsearch installation, and in this case was used the one installed in the wifimon-kibana.example.org node.

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