Elastic 401 error with xpack security off

Hi, I have an elastic 7.8 on docker that I want to connect to it from a remote server on the internet with the domain, I have several other local vms that connects to logstash and logstash works fine with local IP but I need this server to connect directly to elastic through the internet, my problem is that I can't see the elastic API.
Xpack security is off but I get 401 error as below:

curl -XGET 'http://****.***.**:29200/_cluster/health'
{"error":{"root_cause":[{"type":"security_exception","reason":"missing authentication credentials for REST request [/_cluster/health]","header":{"WWW-Authenticate":"Basic realm=\"security\" charset=\"UTF-8\""}}],"type":"security_exception","reason":"missing authentication credentials for REST request [/_cluster/health]","header":{"WWW-Authenticate":"Basic realm=\"security\" charset=\"UTF-8\""}},"status":401}

There is no log on elastic related to this error.
We have a gw that translate the domain:29200 to local-ip:9200
here is my elastic config:

cluster.name: ****
node.name: "elasticsearch"
node.master: true
node.data: true
xpack.license.self_generated.type: basic
xpack.monitoring.enabled: true
xpack.security.enabled: false
xpack.security.audit.enabled: true
   type: local
use_ingest: false

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