# \`curl: (7) Failed connect to 187.48.456.45:9200; Connection refused\` **URL:** \ **Category:** Elasticsearch\ **Created:** [June 15, 2016, 7:27am UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-187-48-456-45-9200-connection-refused/52821 "2016-06-15T07:27:17Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Hilal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hilal/32/7684_2.png) [@Hilal](https://discuss.elastic.co/u/Hilal)\ **Post date:** [June 15, 2016, 7:27am UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-187-48-456-45-9200-connection-refused/52821/1 "2016-06-15T07:27:17Z")
Hi, I installed ES 2.3.3. on my server(centos 7). I want to work on server not localhost. So I changed my elasticsearch.yml file with my ip number:187.48.456.45: network.host: `187.48.456.45` After restart ES and I tried to connection. ``` [root@elasticsearch ~]# service elasticsearch restart Restarting elasticsearch (via systemctl): [OK] ``` However It didn't work true. [root@elasticsearch ~]# `curl http://187.48.456.45:9200` my error: `curl: (7) Failed connect to 187.48.456.45:9200; Connection refused` Also my firewall close. What is the problem? ---
**Author:** ![Kevin\_Csuka](https://avatars.discourse-cdn.com/v4/letter/k/7feea3/32.png) [@Kevin\_Csuka](https://discuss.elastic.co/u/Kevin_Csuka)\ **Post date:** [June 15, 2016, 7:37am UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-187-48-456-45-9200-connection-refused/52821/2 "2016-06-15T07:37:15Z")
> [@Hilal](#): > > sticse Yeah this is a network issue. I probably know how to solve it: On a Windows machine: Google for 'paping' and download it, put it in C:/ Open up a command prompt and perform: ```auto C:/paping 176.56.236.46 -p 9200 ``` I'm guessing it will tell you it is closed. You say 'my firewall close'. This is not how firewalls work. When you 'shutdown' a firewall, it doesn't mean all the ports are open! CentOS 7 works with firewallcmd. You can either disable firewallcmd and use iptables to open a port. Or use these commands: `firewall-cmd --zone=dmz --add-port=9200/tcp --permanent systemctl restart firewall-cmd ` And I'm not quite sure what it is you're trying. Because which machine is IP number: 187.48.456.45? And you're trying to curl @ 176.56.236.46:9200 (A different IP adres) ---
**Author:** ![Hilal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hilal/32/7684_2.png) [@Hilal](https://discuss.elastic.co/u/Hilal)\ **Post date:** [June 15, 2016, 12:09pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-187-48-456-45-9200-connection-refused/52821/3 "2016-06-15T12:09:11Z")
Ok I did but it isn't. I installed centos 6 instead of centos 7. After I installed ES. 2.3.3. I configured elasticsearch.yml for `network.host: 187.48.456.45.` After I installed vesta web panel for apache, mysql and php. service elasticsearch restart. ``` error: permission denied on key 'vm.max_map_count' Starting elasticsearch: log4j:WARN No appenders could be found for logger (common). log4j:WARN Please initialize the log4j system properly. log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info. ``` I tried to connect on my server: `curl 'http://187.48.456.45:9200'` ... ``` { "name" : "Rogue", "cluster_name" : "elasticsearch", "version" : { "number" : "2.3.3", "build_hash" : "218bdf10790eef486ff2c41a3df5cfa32dadcfde", "build_timestamp" : "2016-05-17T15:40:04Z", "build_snapshot" : false, "lucene_version" : "5.5.0" }, "tagline" : "You Know, for Search" } ``` It work true .👍 However I tried to connection on my browser: ``` http://187.48.456.45:9200 ``` Result: ``` This site can not be reached 187.48.456.45 took too long to respond to the main machine. Make a search on Google on 187 48 9200 ERR_CONNECTION_TIMED_OUT ``` What can I do? ---
**Author:** ![Hilal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hilal/32/7684_2.png) [@Hilal](https://discuss.elastic.co/u/Hilal)\ **Post date:** [June 15, 2016, 12:11pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-187-48-456-45-9200-connection-refused/52821/4 "2016-06-15T12:11:33Z")
my ip tables: ``` ... -A INPUT -p tcp -m tcp --dport 9200 -j ACCEPT -A INPUT -p tcp -m udp --dport 9200 -j ACCEPT .... ``` and [root@elasticsearch ~]# `netstat -plnt` ``` Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:110 0.0.0.0:* LISTEN 3294/dovecot tcp 0 0 0.0.0.0:143 0.0.0.0:* LISTEN 3294/dovecot tcp 0 0 176.56.236.46:80 0.0.0.0:* LISTEN 4837/nginx tcp 0 0 176.56.236.46:8080 0.0.0.0:* LISTEN 2583/httpd tcp 0 0 0.0.0.0:465 0.0.0.0:* LISTEN 3263/exim tcp 0 0 127.0.0.1:8081 0.0.0.0:* LISTEN 2583/httpd tcp 0 0 0.0.0.0:8083 0.0.0.0:* LISTEN 6092/nginx tcp 0 0 127.0.0.1:8084 0.0.0.0:* LISTEN 4837/nginx tcp 0 0 176.56.236.46:53 0.0.0.0:* LISTEN 3177/named tcp 0 0 127.0.0.1:53 0.0.0.0:* LISTEN 3177/named tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN 2622/vsftpd tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1285/sshd tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 3263/exim tcp 0 0 127.0.0.1:953 0.0.0.0:* LISTEN 3177/named tcp 0 0 176.56.236.46:8443 0.0.0.0:* LISTEN 2583/httpd tcp 0 0 0.0.0.0:2525 0.0.0.0:* LISTEN 3263/exim tcp 0 0 0.0.0.0:993 0.0.0.0:* LISTEN 3294/dovecot tcp 0 0 0.0.0.0:995 0.0.0.0:* LISTEN 3294/dovecot tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 3093/mysqld tcp 0 0 0.0.0.0:587 0.0.0.0:* LISTEN 3263/exim tcp 0 0 ::ffff:176.56.236.46:9200 :::* LISTEN 8121/java tcp 0 0 :::465 :::* LISTEN 3263/exim tcp 0 0 ::ffff:176.56.236.46:9300 :::* LISTEN 8121/java tcp 0 0 :::22 :::* LISTEN 1285/sshd tcp 0 0 :::25 :::* LISTEN 3263/exim tcp 0 0 ::1:953 :::* LISTEN 3177/named tcp 0 0 :::2525 :::* LISTEN 3263/exim tcp 0 0 :::587 :::* LISTEN 3263/exim ``` ---
**Author:** ![Hilal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hilal/32/7684_2.png) [@Hilal](https://discuss.elastic.co/u/Hilal)\ **Post date:** [June 15, 2016, 1:26pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-187-48-456-45-9200-connection-refused/52821/5 "2016-06-15T13:26:18Z")
It was solved. on server cmd: ``` /etc/init.d/elasticsearch start ``` after: [http://176.56.236.46:9200](http://176.56.236.46:9200) ``` { "name" : "Bi-Beast", "cluster_name" : "elasticsearch", "version" : { "number" : "2.3.3", "build_hash" : "218bdf10790eef486ff2c41a3df5cfa32dadcfde", "build_timestamp" : "2016-05-17T15:40:04Z", "build_snapshot" : false, "lucene_version" : "5.5.0" }, "tagline" : "You Know, for Search" } ``` ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 5, 2017, 10:43pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-187-48-456-45-9200-connection-refused/52821/6 "2017-07-05T22:43:39Z")