diff --git a/.travis.yml b/.travis.yml
index 2da5439..2da99d7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,10 +1,10 @@
-language: python 
-python:
-  - 2.6
-  - 2.7
-before_install:
-  - sudo apt-get update -qq
-  - sudo apt-get install -qq libevent-dev python-gevent
-  - pip install gevent
-script:
-  - python test.py
+language: python
+python:
+  - 2.6
+  - 2.7
+before_install:
+  - sudo apt-get update -qq
+  - sudo apt-get install -qq libevent-dev python-gevent python-m2crypto
+  - pip install gevent
+script:
+  - python test.py
diff --git a/config.json b/config.json
index 25879b1..5c9656b 100644
--- a/config.json
+++ b/config.json
@@ -1,9 +1,9 @@
 {
-    "server":"localhost",
+    "server":"0.0.0.0",
     "server_port":8388,
     "local_port":1080,
     "password":"barfoo!",
-    "timeout":600,
+    "timeout":300,
     "method":"table",
     "local_address":"127.0.0.1",
     "fast_open":false
diff --git a/shadowsocks/utils.py b/shadowsocks/utils.py
index 9e2fe14..4da4a8b 100644
--- a/shadowsocks/utils.py
+++ b/shadowsocks/utils.py
@@ -36,14 +36,20 @@ def find_config():
 
 
 def check_config(config):
+    if config.get('local_address', '') in ['0.0.0.0']:
+        logging.warn('warning: local set to listen 0.0.0.0, which is not safe')
     if config.get('server', '') in ['127.0.0.1', 'localhost']:
-        logging.warn('Server is set to "%s", maybe it\'s not correct' %
-                     config['server'])
-        logging.warn('Notice server will listen at %s:%s' %
+        logging.warn('warning: server set to listen %s:%s, are you sure?' %
                      (config['server'], config['server_port']))
     if (config.get('method', '') or '').lower() == 'rc4':
-        logging.warn('RC4 is not safe; please use a safer cipher, '
+        logging.warn('warning: RC4 is not safe; please use a safer cipher, '
                      'like AES-256-CFB')
+    if (config.get('timeout', 600) or 600) < 100:
+        logging.warn('warning: your timeout %d seems too short' %
+                     config.get('timeout'))
+    if (config.get('timeout', 600) or 600) > 600:
+        logging.warn('warning: your timeout %d seems too long' %
+                     config.get('timeout'))
 
 
 def print_local_help():
diff --git a/test.py b/test.py
index 4e2edb1..e2b6f16 100755
--- a/test.py
+++ b/test.py
@@ -82,9 +82,9 @@ decrypt_table = string.maketrans(encrypt_table, string.maketrans('', ''))
 for i in range(0, 256):
     assert(target2[0][i] == ord(encrypt_table[i]))
     assert(target2[1][i] == ord(decrypt_table[i]))
-p1 = Popen(['python', 'shadowsocks/server.py'], shell=False, bufsize=0, stdin=PIPE, 
+p1 = Popen(['python', 'shadowsocks/server.py', '-c', 'test/config.json'], shell=False, bufsize=0, stdin=PIPE, 
     stdout=PIPE, stderr=PIPE, close_fds=True)
-p2 = Popen(['python', 'shadowsocks/local.py'], shell=False, bufsize=0, stdin=PIPE,
+p2 = Popen(['python', 'shadowsocks/local.py', '-c', 'test/config.json'], shell=False, bufsize=0, stdin=PIPE,
     stdout=PIPE, stderr=PIPE, close_fds=True)
 p3 = None
 
diff --git a/test/config.json b/test/config.json
new file mode 100644
index 0000000..42ba376
--- /dev/null
+++ b/test/config.json
@@ -0,0 +1,10 @@
+{
+    "server":"127.0.0.1",
+    "server_port":8388,
+    "local_port":1080,
+    "password":"barfoo!",
+    "timeout":300,
+    "method":"aes-256-cfb",
+    "local_address":"127.0.0.1",
+    "fast_open":false
+}