--- a/admin/default.vcl
+++ b/admin/default.vcl
@@ -34,6 +34,17 @@
     }
   }
 } 
+sub vcl_hash {
+     # http://serverfault.com/questions/112531/ignoring-get-parameters-in-varnish-vcl
+     set req.url = regsub(req.url, "/../|/.._../", "/");
+     hash_data(req.url);
+     if (req.http.host) {
+         hash_data(req.http.host);
+     } else {
+         hash_data(server.ip);
+     }
+     return (hash);
+}
 sub vcl_deliver {
     if (!resp.http.Vary) {
         set resp.http.Vary = "Accept-Encoding";   

--- a/ckanext/datagovau/plugin.py
+++ b/ckanext/datagovau/plugin.py
@@ -26,9 +26,6 @@
 				lib.helpers.get_action('user_activity_list',{'id':user_dict['id']}) if x['data'].get('package')]
     return created_datasets_list + active_datasets_list
 
-def datastore_search(context, data_dict):
-        return {'success': True} # allow all datastore search
-
 class DataGovAuPlugin(plugins.SingletonPlugin,
                                 tk.DefaultDatasetForm):
     '''An example IDatasetForm CKAN plugin.
@@ -39,12 +36,6 @@
     plugins.implements(plugins.IConfigurer, inherit=False)
     plugins.implements(plugins.IDatasetForm, inherit=False)
     plugins.implements(plugins.ITemplateHelpers, inherit=False)
-    plugins.implements(plugins.IAuthFunctions)
-
-
-    def get_auth_functions(self):
-        return {'datastore_search': datastore_search}
-
 
     def update_config(self, config):
         # Add this plugin's templates dir to CKAN's extra_template_paths, so