Integrate Elastic Search Server with Apache or IBM HttpServer


Our current Deployment plan is to use single Elastic Search integrating with Smart Client
I want to route all the calls to Elastic Search 9200 port to be intercepted by Siteminder by installing Webagent , basically to protect elastic search indices with unauthorised access
Appreciate any help with regards this configuration or best ways to protect the elastic search.

firewall the cluster too and make sure elasticsearch instance not run as root.