diff --git a/js/FilterProxy.js b/js/FilterProxy.js
new file mode 100644
index 0000000..be1d919
--- /dev/null
+++ b/js/FilterProxy.js
@@ -0,0 +1,26 @@
+Ext.define('PMG.FilterProxy', {
+    extend: 'Proxmox.RestProxy',
+    alias : 'proxy.pmgfilterproxy',
+
+    filterId: undefined, // 'x-gridfilter-XXXXX'
+
+    getParams: function(operation) {
+	var me = this, i;
+	if (!operation.isReadOperation) {
+	    return {};
+	}
+	var params = me.callParent(arguments);
+
+	var filters = operation.getFilters() || [];
+	for (i = 0; i < filters.length; i++) {
+	    filter = filters[i];
+	    if (filter.config.id === me.filterId) {
+		var v = filter.getValue();
+		if (v !== undefined && v !== '') {
+		    params.filter = v;
+		}
+	    }
+	}
+	return params;
+    }
+});
diff --git a/js/Makefile b/js/Makefile
index f11537a..9d1cbf3 100644
--- a/js/Makefile
+++ b/js/Makefile
@@ -1,5 +1,6 @@
 JSSRC=							\
 	Utils.js					\
+	FilterProxy.js					\
 	LoginView.js					\
 	RoleSelector.js					\
 	ServerStatus.js					\