This module requires twos URLs:
1 - A valid UpdateRequestHandler on the server. In example deployments, this is generally /solr/update (e.g. http://10.1.2.3:8983/solr/update).
2 - A valid SearchHandler on the server. In example deployments, this is generally /solr/select (e.g. http://10.1.2.3:8983/solr/select).

See the documentation for the CVE-2013-6407-DARH module for detailed information on obtaining the location of various request handlers on a Solr server if the defaults are not used or are inaccessible.
