LAN上的Elasticsearch未连接

Question

I have an elasticsearch running on a server (ubuntu) hosted on a local machine in our network. We have used it for testing and want to connect from local computers. The machines lan ip is 192.168.1.100. My ip is 192.168.1.54. It is running when I do

curl -X GET 'http://localhost:9200'
{
  "name" : "node-1",
  "cluster_name" : "norrath",
  "cluster_uuid" : "0EqCQH1ZTSGzOOdq_Sf7EQ",
  "version" : {
    "number" : "6.2.1",
    "build_hash" : "7299dc3",
    "build_date" : "2018-02-07T19:34:26.990113Z",
    "build_snapshot" : false,
    "lucene_version" : "7.2.1",
    "minimum_wire_compatibility_version" : "5.6.0",
    "minimum_index_compatibility_version" : "5.0.0"
  },
  "tagline" : "You Know, for Search"
}

When I try from my machine..

curl 'http://192.168.1.100:9200'
curl: (7) Failed to connect to 192.168.1.100 port 9200: Connection refused

First thing I did was follow digital oceans instructions and changed

network.host: 0.0.0.0

Using netstat -atun

tcp6       0      0 :::9200                 :::*                    LISTEN
tcp6       0      0 :::9300                 :::*                    LISTEN

UFW status

sudo ufw status
Status: inactive

I have tried multiple config file changes..

#http.cors.enabled: true
#http.cors.allow-origin: "/.*/"
#transport.host: 0.0.0.0
#transport.tcp.port: 9300
#http.port: 9200
network.host:  0.0.0.0
#network.bind_host: 0.0.0.0
#network.publish_host: 0.0.0.0
systemctl restart elasticsearch

Still not able to connect over lan.

Answer 1

After examining my netstat output, I realized it is listening for tcp6 requests but not ipv4. Changing my curl request to the inet6 address, and setting up tcp/udp rather than tcp only fixed our issue.