diff --git a/core/permissions.py b/core/permissions.py
index 7e6f4e5..c80f763 100644
--- a/core/permissions.py
+++ b/core/permissions.py
@@ -9,3 +9,12 @@ class IsAuthorOrReadOnly(BasePermission):
             and request.user.is_authenticated
             and obj.author == request.user
         )
+
+
+class IsAdminUserOrReadOnly(BasePermission):
+    def has_permission(self, request, view):
+        return bool(
+            request.method in SAFE_METHODS
+            or request.user
+            and request.user.is_staff
+        )
diff --git a/market/serializers.py b/market/serializers.py
index 4a11c8f..c986148 100644
--- a/market/serializers.py
+++ b/market/serializers.py
@@ -38,6 +38,14 @@ class ProductSerializer(ModelSerializer):
         fields = ("id", "name", "brand", "colors", "storages")
 
 
+class ProductListSerializer(ModelSerializer):
+    brand = serializers.CharField(source="brand.name")
+
+    class Meta:
+        model = Product
+        fields = ("id", "name", "brand")
+
+
 class ImageSerializer(ModelSerializer):
     class Meta:
         model = Image
@@ -45,8 +53,10 @@ class ImageSerializer(ModelSerializer):
 
 
 class PostSerializer(ModelSerializer):
+    product = ProductListSerializer(read_only=True)
     nickname = serializers.CharField(source="author.nickname")
     images = ImageSerializer(many=True, read_only=True)
+    storage = serializers.CharField(source="storage.storage")
 
     class Meta:
         model = Post
diff --git a/market/viewsets.py b/market/viewsets.py
index be08e12..fb21962 100644
--- a/market/viewsets.py
+++ b/market/viewsets.py
@@ -4,7 +4,7 @@ from rest_framework.response import Response
 from rest_framework.viewsets import ModelViewSet
 
 from core.mixins import ActionBasedMixin
-from core.permissions import IsAuthorOrReadOnly
+from core.permissions import IsAuthorOrReadOnly, IsAdminUserOrReadOnly
 from market.models import Brand, Product, Post
 from market.serializers import (
     BrandSerializer,
@@ -19,15 +19,11 @@ class BrandViewset(ActionBasedMixin, ModelViewSet):
     serializer_class_map = {
         "products": ProductSerializer,
     }
-    permission_classes = [IsAdminUser]
-    permission_classes_map = {
-        "list": [AllowAny],
-        "retrieve": [AllowAny],
-    }
+    permission_classes = [IsAdminUserOrReadOnly]
     pagination_class = None
 
     @action(detail=True, methods=["GET"])
-    def products(self, request, pk):
+    def product(self, request, pk):
         brand = self.get_object()
         serializer = self.get_serializer(brand.products.all(), many=True)
         return Response(serializer.data)
@@ -39,11 +35,7 @@ class ProductViewset(ActionBasedMixin, ModelViewSet):
     serializer_class_map = {
         "posts": PostSerializer,
     }
-    permission_classes = [IsAdminUser]
-    permission_classes_map = {
-        "list": [AllowAny],
-        "retrieve": [AllowAny],
-    }
+    permission_classes = [IsAdminUserOrReadOnly]
 
     @action(detail=True, methods=["GET"])
     def posts(self, request, pk):