diff --git a/shadowsocks/obfsplugin/auth.py b/shadowsocks/obfsplugin/auth.py
index 8edd6a0..4150aaa 100644
--- a/shadowsocks/obfsplugin/auth.py
+++ b/shadowsocks/obfsplugin/auth.py
@@ -1131,7 +1131,7 @@ class auth_aes128_sha1(auth_base):
     def set_server_info(self, server_info):
         self.server_info = server_info
         try:
-            max_client = int(server_info.protocol_param)
+            max_client = int(server_info.protocol_param.split('#')[0])
         except:
             max_client = 64
         self.server_info.data.set_max_client(max_client)
diff --git a/shadowsocks/tcprelay.py b/shadowsocks/tcprelay.py
index 763122d..8db91f9 100644
--- a/shadowsocks/tcprelay.py
+++ b/shadowsocks/tcprelay.py
@@ -1020,14 +1020,16 @@ class TCPRelay(object):
         self._listen_port = listen_port
 
         if config['protocol'] in ["auth_aes128_md5", "auth_aes128_sha1"]:
-            user_list = config['protocol_param'].split(',')
-            if user_list:
-                for user in user_list:
-                    items = user.split(':')
-                    if len(items) == 2:
-                        uid = struct.pack('<I', int(items[0]))
-                        passwd = items[1]
-                        self.add_user(uid, passwd)
+            param = config['protocol_param'].split('#')
+            if len(param) == 2:
+                user_list = param[1].split(',')
+                if user_list:
+                    for user in user_list:
+                        items = user.split(':')
+                        if len(items) == 2:
+                            uid = struct.pack('<I', int(items[0]))
+                            passwd = items[1]
+                            self.add_user(uid, passwd)
 
         addrs = socket.getaddrinfo(listen_addr, listen_port, 0,
                                    socket.SOCK_STREAM, socket.SOL_TCP)
diff --git a/shadowsocks/udprelay.py b/shadowsocks/udprelay.py
index e2784af..84cd8cc 100644
--- a/shadowsocks/udprelay.py
+++ b/shadowsocks/udprelay.py
@@ -902,14 +902,16 @@ class UDPRelay(object):
         self.server_user_transfer_dl = {}
 
         if config['protocol'] in ["auth_aes128_md5", "auth_aes128_sha1"]:
-            user_list = config['protocol_param'].split(',')
-            if user_list:
-                for user in user_list:
-                    items = user.split(':')
-                    if len(items) == 2:
-                        uid = struct.pack('<I', int(items[0]))
-                        passwd = items[1]
-                        self.add_user(uid, passwd)
+            param = config['protocol_param'].split('#')
+            if len(param) == 2:
+                user_list = param[1].split(',')
+                if user_list:
+                    for user in user_list:
+                        items = user.split(':')
+                        if len(items) == 2:
+                            uid = struct.pack('<I', int(items[0]))
+                            passwd = items[1]
+                            self.add_user(uid, passwd)
 
         self.protocol_data = obfs.obfs(config['protocol']).init_data()
         self._protocol = obfs.obfs(config['protocol'])