When using eZ Publish's eZ Find extension on a public facing site or project -- arguably any project -- it is vital to secure it to prevent unauthorized access and potential data loss. eZ Find is powered by Apache Solr, an open-source search server based on the Lucene Java search library. Its power and flexibility make eZ Find a great tool when working with a lot of content in eZ Publish.
There are a number of ways a Solr installation can be secured. We'll look at BasicAuth via Jetty UserRealms and iptables firewall rules in detail.