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This article was written for version 6.3.1 of op5 Monitor, it could work on both lower and higher version if nothing else is stated.

Articles in the Community-Space are not supported by op5 Support.



If you are  in a situation where you need to expose Monitor's API for use with external applications (like dashboards or the mobile app) the best solution is to use a reverse proxy.

In this how-to we will configure the Apache HTTP server as a reverse proxy and cover some basics steps for tightening security.


Exposing a op5 Monitor system directly to the Internet or other untrusted networks is not recommended. We encourage you to use a VPN solution or similar to restrict access.



  • Basic Linux/UNIX knowledge

  • Root-privileges on a server with network access to port 443 on the host running Monitor

Installation and configuration

We will start off by installing the Apache HTTP  server and it's SSL module:

[root@reverseproxy ~]# yum install -y httpd mod_ssl


Create and edit /etc/httpd/conf.d/monitor-api-proxy.conf with your text editor of choice. The content of this file should look something like this:

<IfModule mod_proxy.c>

        ProxyRequests Off

        <Proxy *>
                Order deny,allow
                Allow from all


        ProxyPreserveHost On
        ProxyVia On
        SSLProxyEngine on

        ProxyPass /api https://monitorhost:443/api
        ProxyPassReverse https://monitorhost:443/api /api

        CustomLog logs/access_monitor-api-proxy.log combined
        ErrorLog logs/error_monitor-api-proxy.log


Replace "monitorhost" with the host name or IP-address of your Monitor server.

Restart the Apache HTTP server:

[root@reverseproxy ~]# service httpd restart


You should now have a working reverse proxy. You can test the setup with a web browser or with curl from your local system:

[user@desktop ~]# curl --insecure -u user:password https://reverseproxy/api/status/host/monitor/

Replace "reverseproxy" with the host name or IP-address of your reverse proxying server.


Security recommendations