diff --git a/lib/arguments.js b/lib/arguments.js
index f495fad..577e397 100644
--- a/lib/arguments.js
+++ b/lib/arguments.js
@@ -35,7 +35,12 @@ var optimistOptions = {
     },
     method: {
         description: 'Add method to Access-Control-Allow-Methods response header'
+    },
+    public: {
+        description: 'Allow external requests',
+        default: false
     }
+
 };
 
 exports.getArgv = function() {
diff --git a/lib/setup.js b/lib/setup.js
index d048b0d..c90f35b 100644
--- a/lib/setup.js
+++ b/lib/setup.js
@@ -13,6 +13,10 @@ exports.startServer = function (argv, app, cb) {
             console.log('   STEALTH MODE     '.grey.bold.inverse, 'running silently'.grey);
         }
 
+        if (argv.public) {
+            console.log('   PUBLIC MODE     '.grey.bold.inverse, 'running publicly'.grey);
+        }
+
         if (cb) {
           cb();
         }
@@ -25,9 +29,18 @@ exports.startServer = function (argv, app, cb) {
             cert: fs.readFileSync(argv.sslCrtFile, 'utf8' ),
             rejectUnauthorized: false
         };
-        return https.createServer(sslOptions, app).listen(argv.serverPort, 'localhost', startCb);
+
+        if (argv.public === true) {
+            return https.createServer(sslOptions, app).listen(argv.serverPort, startCb);
+        } else {
+            return https.createServer(sslOptions, app).listen(argv.serverPort, 'localhost', startCb);
+        }
     } else {
-        return app.listen(argv.serverPort, 'localhost', startCb);
+        if (argv.public === true) {
+            return app.listen(argv.serverPort, startCb);
+        } else {
+            return app.listen(argv.serverPort, 'localhost', startCb);
+        }
     }
 
 };