I am trying to connect to my remote server using VisualVM but the JMX connection just hangs with timeout. Although I can access from my local machine the port using telnet “public server IP:8070”

The Dockerfile of the project looks like this:

FROM zulu-openjdk-alpine:11-jre

....

ENV JAVA_DEFAULT_OPTIONS='-server -dsa -XX:+PrintCommandLineFlags
-Dcom.sun.management.jmxremote 
-Dcom.sun.management.jmxremote.port=8070 
-Dcom.sun.management.jmxremote.rmi.port=8070 
-Dcom.sun.management.jmxremote.local.only=false 
-Dcom.sun.management.jmxremote.authenticate=false 
-Dcom.sun.management.jmxremote.ssl=false 
-Djava.rmi.server.hostname='<public server IP>'

EXPOSE 8070

ENTRYPOINT java -cp $MY_PROJECT_CLASSPATH $JAVA_DEFAULT_OPTIONS $MY_PROJECT_START_CLASS

I exposed the port form the container using service:

kind: Service
apiVersion: v1
metadata:
  name: my-project-jmx
spec:
  ports:
    - name: tcp-32070
      protocol: TCP
      port: 32070
      targetPort: 8070
      nodePort: 32070
  externalTrafficPolicy: Local
  type: LoadBalancer
  selector:
    app: my-project
  type: NodePort