ECP install & configuration

[Nate Klingenstein]

> Looking for the document that suggest how to do for the following environment:
>  
> ·         Shibboleth version 2.3
> ·         Running on Red Hat Linux
> ·         Powered by Apache 2.2

https://wiki.shibboleth.net/confluence/display/SHIB2/IdPEnableECP

We can't write comprehensive configuration guides for every conceivable deployment.  However, you can use the same documentation and basic authentication powered by Apache protecting the same location.