diff --git a/.env.example b/.env.example
index 502dbdde..3a82bc85 100644
--- a/.env.example
+++ b/.env.example
@@ -21,7 +21,3 @@ REFRESH_SECRET=
 
 # Gemini API Key
 JEMINI_KEY=
-
-# Ports
-BACKEND_PORT=54530
-FRONTEND_PORT=55110
diff --git a/docker-compose.yml b/docker-compose.yml
index 9438fca6..4acda645 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -7,8 +7,8 @@ services:
       POSTGRES_DB: ${DB_NAME:-report_db}
       POSTGRES_USER: ${DB_USER:-postgres}
       POSTGRES_PASSWORD: ${DB_PASSWORD:?DB_PASSWORD가 .env에 설정되어야 합니다}
-    ports:
-      - "5442:5432"
+    expose:
+      - "5432"
     volumes:
       - postgres-data:/var/lib/postgresql/data
     networks:
@@ -24,8 +24,8 @@ services:
     build: ./backend
     container_name: report-backend
     restart: always
-    ports:
-      - "${BACKEND_PORT:-54530}:3000"
+    expose:
+      - "3000"
     environment:
       - DB_HOST=${DB_HOST:-postgres}
       - DB_PORT=${DB_PORT:-5432}
@@ -44,21 +44,26 @@ services:
       - ./backend/img:/app/img
     networks:
       - app-network
+      - proxy
 
   frontend:
     build: ./frontend
     container_name: report-frontend
     restart: always
-    ports:
-      - "${FRONTEND_PORT:-55110}:80"
+    expose:
+      - "80"
     depends_on:
       - backend
     networks:
       - app-network
+      - proxy
 
 networks:
   app-network:
     driver: bridge
+  # npm(Nginx Proxy Manager)이 컨테이너 이름으로 라우팅하는 공용 네트워크
+  proxy:
+    external: true
 
 volumes:
   postgres-data:
\ No newline at end of file