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IdP (Identity Provider): A web-based system that can authenticate a user on behalf of another system called SP (for Service Provider).

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Here we discuss key items in the various configuration files; not necessarily the items that need to be modified but those that deserve an explanation.

Apache Configuration

Note: Apache version should be 2.4.10 or higher so that the local address request field gets populated for use in the back-end code. (see: https://bz.apache.org/bugzilla/show_bug.cgi?id=56661). If it isn't populated the back-end fails with an NPE when looking for the local address in the request. (see: https://bz.apache.org/bugzilla/show_bug.cgi?id=56661)

/etc/httpd/conf.d/sp.conf

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