diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c2658d7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+node_modules/
diff --git a/README.md b/README.md
index 7191d3e..63f2bad 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,9 @@ Look will be started as a web server on port `5959`, you can access it by pointi
 
   - `port` Listening port, defaulting to `5959`
   - `host` Listening host, defaulting to `0.0.0.0`
+  - `user` string of "username:password", if present enable http basic authentication, defaulting null
+  - `real` string for realm in basic auth, defaulting `mydomain`
 
 ```js
-require('look').start(3000, '127.0.0.1');
+require('look').start(3000, '127.0.0.1', 'username:password', 'example.org');
 ```
diff --git a/lib/look.js b/lib/look.js
index bce0bc4..c59a121 100644
--- a/lib/look.js
+++ b/lib/look.js
@@ -11,9 +11,9 @@ agentio.createClient = function () {
 	return agent;
 };
 
-module.exports.start = function (port, host) {
+module.exports.start = function (port, host, user, realm) {
 	if (cluster.isMaster) {
-		var observer = child_process.fork(__dirname + '/observer', [ port, host ]);
+		var observer = child_process.spawn('node', [__dirname + '/observer', port, host, user, realm ], {stdio: ['ipc', process.stdout, process.stderr], detached: false});
 
 		observer.on('message', function (data) {
 			if (data.cmd === 'init') {
@@ -23,6 +23,7 @@ module.exports.start = function (port, host) {
 			agent.request(data);
 			clusterhub.emit('request', data);
 		});
+		observer.unref();
 
 		agent.on('request', function (data) {
 			observer.send(data);
@@ -56,4 +57,4 @@ module.exports.start = function (port, host) {
 	});
 
 	nodetime.profile({ server: 'localhost', accountKey: 'session', silent: true, transactions: false });
-};
\ No newline at end of file
+};
diff --git a/lib/observer.js b/lib/observer.js
index 1bbfb2f..0bbccfe 100644
--- a/lib/observer.js
+++ b/lib/observer.js
@@ -1,6 +1,7 @@
 var connect = require('connect');
 var connectRoute = require('connect-route');
 var http = require('http');
+var auth = require('basic-auth')
 var app = connect();
 var server = http.createServer(app);
 var io = require('socket.io').listen(server, { log: false });
@@ -18,11 +19,31 @@ app.use(connectRoute(function(router) {
 }));
 
 
-app.use(connect.static(__dirname + '/web'));
-
 var port = (typeof(process.argv[2]) !== 'undefined' && process.argv[2] !== 'undefined') ? process.argv[2] : 5959;
 var host = (typeof(process.argv[3]) !== 'undefined' && process.argv[3] !== 'undefined') ? process.argv[3] : '0.0.0.0';
 
+app.use(function(req, res, next){
+	var user = (typeof(process.argv[4]) !== 'undefined' && process.argv[4] !== 'undefined') ? process.argv[4] : null;
+	var realm = (typeof(process.argv[5]) !== 'undefined' && process.argv[5] !== 'undefined') ? process.argv[5] : 'mydomain';
+
+	if( user == null ){
+		next();
+	} else{
+		var credentials = auth(req)
+		params = user.split(":");
+		if (!credentials || credentials.name !== params[0] || credentials.pass !== params[1]) {
+			res.writeHead(401, {
+				'WWW-Authenticate': 'Basic realm="'+realm+'"'
+			})
+			res.end();
+		} else {
+			next();
+		}
+	}
+});
+
+app.use(connect.static(__dirname + '/web'));
+
 console.log('Profiler listening on ' + host + ':' + port);
 
 server.listen(port, host);
@@ -39,4 +60,4 @@ io.sockets.on('connection', function (socket) {
 
 process.on('message', function (data) {
 	receiver.send(data);
-});
\ No newline at end of file
+});
diff --git a/lib/receiver.js b/lib/receiver.js
index c5363ab..9ce5581 100644
--- a/lib/receiver.js
+++ b/lib/receiver.js
@@ -30,7 +30,7 @@ Receiver.prototype.addSocket = function (socket) {
 };
 
 Receiver.prototype.send = function (data) {
-	if (data.cmd === 'init') {
+	if (data.cmd === 'init' && this.sockets[data.args.socket]) {
 		this.sockets[data.args.socket].emit('commands', [ data ]);
 		return;
 	}
@@ -41,4 +41,4 @@ Receiver.prototype.send = function (data) {
 	}
 };
 
-module.exports = Receiver;
\ No newline at end of file
+module.exports = Receiver;
diff --git a/package.json b/package.json
index 5aeb305..ffed3d7 100644
--- a/package.json
+++ b/package.json
@@ -1,39 +1,40 @@
 {
-	"name": "look",
-	"version": "0.1.3",
-	"description": "Performance profiler based on nodetime",
-	"keywords": [
-		"profiler",
-		"profiling",
-		"tracing",
-		"cpu",
-		"heap",
-		"performance",
-		"instrumentation",
-		"response time",
-		"performance",
-		"bottlenecks",
-		"monitoring",
-		"analytics",
-		"metrics"
-	],
-	"author": {
-		"name": "Vadim M. Baryshev",
-		"email": "vadimbaryshev@gmail.com"
-	},
-	"repository": {
-		"type": "git",
-		"url": "git://github.com/baryshev/look.git"
-	},
-	"main": "index",
-	"dependencies": {
-		"nodetime": "0.4.6",
-		"clusterhub": "0.2.1",
-		"connect": "2.7.4",
-		"connect-route": "0.1.3",
-		"socket.io": "0.9.14"
-	},
-	"engines": {
-		"node": ">= 0.8.0"
-	}
+  "name": "look",
+  "version": "0.1.3",
+  "description": "Performance profiler based on nodetime",
+  "keywords": [
+    "profiler",
+    "profiling",
+    "tracing",
+    "cpu",
+    "heap",
+    "performance",
+    "instrumentation",
+    "response time",
+    "performance",
+    "bottlenecks",
+    "monitoring",
+    "analytics",
+    "metrics"
+  ],
+  "author": {
+    "name": "Vadim M. Baryshev",
+    "email": "vadimbaryshev@gmail.com"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/baryshev/look.git"
+  },
+  "main": "index",
+  "dependencies": {
+    "basic-auth": "^1.0.0",
+    "clusterhub": "0.2.1",
+    "connect": "2.7.4",
+    "connect-route": "0.1.3",
+    "nodetime": "0.4.6",
+    "socket.io": "0.9.14"
+  },
+  "engines": {
+    "node": ">= 0.8.0"
+  }
 }