diff --git a/core/config.py b/core/config.py
index 1b2cacb..f99d024 100644
--- a/core/config.py
+++ b/core/config.py
@@ -21,6 +21,8 @@ if not os.path.exists('config'):
           },
           "disabled_plugins": [],
           "disabled_commands": [],
+          "enabled_commands": [],
+          "enabled_commands_propagate": 0,
           "acls": {},
           "api_keys": {},
           "censored_strings":
diff --git a/plugins/sieve.py b/plugins/sieve.py
index 108390e..334fd9f 100644
--- a/plugins/sieve.py
+++ b/plugins/sieve.py
@@ -12,6 +12,10 @@ def sieve_suite(bot, input, func, kind, args):
     if kind == "command":
         if input.trigger in bot.config.get('disabled_commands', []):
             return None
+        if bot.config.get('enabled_commands_propagate'):
+            if input.trigger not in bot.config.get('enabled_commands', []):
+                return None
+

         ignored = bot.config.get('ignored', [])
         if input.host in ignored or input.nick in ignored: