diff --git a/packages/angular-cli/commands/serve.ts b/packages/angular-cli/commands/serve.ts
index 7c16c49993b8..4c1f23061a94 100644
--- a/packages/angular-cli/commands/serve.ts
+++ b/packages/angular-cli/commands/serve.ts
@@ -39,7 +39,7 @@ const ServeCommand = Command.extend({
     {
       name: 'host',
       type: String,
-      default: 'localhost',
+      default: '0.0.0.0',
       aliases: ['H'],
       description: 'Listens only on localhost by default'
     },