diff --git a/server.js b/server.js
index 0d71b86..e34dd3b 100644
--- a/server.js
+++ b/server.js
@@ -2,10 +2,17 @@ var express = require('express');
 var app = express();
 var webpack = require('webpack');
 var WebpackDevServer = require('webpack-dev-server');
-var config = require('./webpack.config');
+var buildConfig = require('./webpack.config')
+
+
+var host = 'react-koans-etherealite.c9users.io';
+var webpackPort = 8081;
+var webpackHostname= `${host}:${webpackPort}`;
+var config = buildConfig(webpackHostname);
+
 
 app.get('/app.js', function (req, res) {
-  res.redirect('//localhost:9090/build/app.js');
+  res.redirect(`//${webpackHostname}/build/app.js`);
 });
 
 app.get('/', function (req, res) {
@@ -19,7 +26,7 @@ new WebpackDevServer(webpack(config), {
     hot: true,
     noInfo: true,
     historyApiFallback: true
-  }).listen(9090, 'localhost', function (err, result) {
+  }).listen(webpackPort, process.env.IP, function (err, result) {
       if (err) {
         console.log(err);
       }
diff --git a/webpack.config.js b/webpack.config.js
index cd0d77b..50de477 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -1,32 +1,33 @@
 var webpack = require('webpack');
 var path = require('path');
 
-module.exports = {
-
-  entry: [
-    'webpack-dev-server/client?http://localhost:9090',
-    'webpack/hot/only-dev-server',
-    './exercises/main'
-  ],
-
-  output: {
-    path:       __dirname + '/build/',
-    filename:   'app.js',
-    publicPath: 'http://localhost:9090/build/'
-  },
-
-  module: {
-    loaders: [
-      { test: path.join(__dirname, 'exercises'), loaders: ['react-hot', 'babel-loader']}
+module.exports = function(hostname) {
+ return {
+    entry: [
+      'webpack-dev-server/client?' + `http://${hostname}`,
+      'webpack/hot/only-dev-server',
+      './exercises/main'
+    ],
+  
+    output: {
+      path:       __dirname + '/build/',
+      filename:   'app.js',
+      publicPath: 'http://' + hostname + '/build/',
+    },
+  
+    module: {
+      loaders: [
+        { test: path.join(__dirname, 'exercises'), loaders: ['react-hot', 'babel-loader']}
+      ]
+    },
+  
+    resolve: {
+      extensions: ['', '.js', '.jsx']
+    },
+  
+    plugins: [
+      new webpack.HotModuleReplacementPlugin(),
+      new webpack.NoErrorsPlugin()
     ]
-  },
-
-  resolve: {
-    extensions: ['', '.js', '.jsx']
-  },
-
-  plugins: [
-    new webpack.HotModuleReplacementPlugin(),
-    new webpack.NoErrorsPlugin()
-  ]
-}
+  }
+}
\ No newline at end of file