Fixes +6222. Default to auth

configs/standalone.js

@@ -84,6 +84,9 @@ module.exports = function(config, optimist) {
     if (testing && argv.k)
         require("child_process").exec("tmux -L cloud91.9 kill-server", function(){});
 
+    var isLocalhost = host == "localhost" || host == "127.0.0.1";
+    if (argv.auth == ":" && !isLocalhost)
+        argv.auth = "admin:admin";
     var auth = argv.auth.split(":");
 
     var plugins = [