diff --git a/moto/core/__init__.py b/moto/core/__init__.py
index 9e2c1e70..9406a7ea 100644
--- a/moto/core/__init__.py
+++ b/moto/core/__init__.py
@@ -1,4 +1,6 @@
 from __future__ import unicode_literals
-from .models import BaseModel, BaseBackend, moto_api_backend  # flake8: noqa
+
+from .models import BaseModel, BaseBackend, moto_api_backend, set_initial_no_auth_action_count  # flake8: noqa
 
 moto_api_backends = {"global": moto_api_backend}
+set_initial_no_auth_action_count = set_initial_no_auth_action_count
diff --git a/moto/core/models.py b/moto/core/models.py
index 9fe1e96b..68f799e3 100644
--- a/moto/core/models.py
+++ b/moto/core/models.py
@@ -27,6 +27,22 @@ os.environ.setdefault("AWS_ACCESS_KEY_ID", "foobar_key")
 os.environ.setdefault("AWS_SECRET_ACCESS_KEY", "foobar_secret")
 
 
+def set_initial_no_auth_action_count(initial_no_auth_action_count):
+    def decorator(function):
+        def wrapper(*args, **kwargs):
+            original_initial_no_auth_action_count = settings.INITIAL_NO_AUTH_ACTION_COUNT
+            settings.INITIAL_NO_AUTH_ACTION_COUNT = initial_no_auth_action_count
+            result = function(*args, **kwargs)
+            settings.INITIAL_NO_AUTH_ACTION_COUNT = original_initial_no_auth_action_count
+            return result
+
+        functools.update_wrapper(wrapper, function)
+        wrapper.__wrapped__ = function
+        return wrapper
+
+    return decorator
+
+
 class BaseMockAWS(object):
     nested_count = 0
 
diff --git a/moto/core/responses.py b/moto/core/responses.py
index 6cd9e24f..9f2f61fd 100644
--- a/moto/core/responses.py
+++ b/moto/core/responses.py
@@ -24,7 +24,7 @@ from werkzeug.exceptions import HTTPException
 import boto3
 from moto.compat import OrderedDict
 from moto.core.utils import camelcase_to_underscores, method_names_from_class
-from moto.settings import INITIAL_NO_AUTH_ACTION_COUNT
+from moto import settings
 
 log = logging.getLogger(__name__)
 
@@ -110,7 +110,7 @@ class ActionAuthenticatorMixin(object):
     request_count = 0
 
     def _authenticate_action(self, iam_request_cls):
-        if ActionAuthenticatorMixin.request_count >= INITIAL_NO_AUTH_ACTION_COUNT:
+        if ActionAuthenticatorMixin.request_count >= settings.INITIAL_NO_AUTH_ACTION_COUNT:
             iam_request = iam_request_cls(method=self.method, path=self.path, data=self.data, headers=self.headers)
             iam_request.check_signature()
             iam_request.check_action_permitted()