diff --git a/docker/prod/docker-compose.backend.prod.yml b/docker/prod/docker-compose.backend.prod.yml
index 78e5e994..3cded048 100644
--- a/docker/prod/docker-compose.backend.prod.yml
+++ b/docker/prod/docker-compose.backend.prod.yml
@@ -5,20 +5,17 @@ services:
       context: ../../backend-node
       dockerfile: ../docker/prod/backend.Dockerfile # 운영용 Dockerfile
     container_name: pms-backend-prod
-    ports:
-      - "8080:8080"
+    network_mode: "host" # 호스트 네트워크 모드
     environment:
       - NODE_ENV=production
       - PORT=8080
+      - HOST=0.0.0.0 # 모든 인터페이스에서 바인딩
       - DATABASE_URL=postgresql://postgres:ph0909!!@39.117.244.52:11132/plm
       - JWT_SECRET=ilshin-plm-super-secret-jwt-key-2024
       - JWT_EXPIRES_IN=24h
       - CORS_ORIGIN=http://192.168.0.70:5555,http://39.117.244.52:5555
       - CORS_CREDENTIALS=true
       - LOG_LEVEL=info
-    # 운영용에서는 볼륨 마운트 없음 (보안상 이유)
-    networks:
-      - pms-network
     restart: unless-stopped
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:8080/health"]
diff --git a/frontend/lib/api/client.ts b/frontend/lib/api/client.ts
index a141be3f..659a512a 100644
--- a/frontend/lib/api/client.ts
+++ b/frontend/lib/api/client.ts
@@ -1,7 +1,6 @@
 import axios, { AxiosResponse, AxiosError } from "axios";
 
-// API 기본 URL 설정 - 모든 접근에서 내부 IP 사용 (Option B)
-export const API_BASE_URL = "http://192.168.0.70:8080/api";
+export const API_BASE_URL = "http://39.117.244.52:8080/api";
 
 // JWT 토큰 관리 유틸리티
 const TokenManager = {
diff --git a/frontend/next.config.mjs b/frontend/next.config.mjs
index d9ef4ce9..50f2755d 100644
--- a/frontend/next.config.mjs
+++ b/frontend/next.config.mjs
@@ -43,7 +43,7 @@ const nextConfig = {
 
   // 환경 변수 (런타임에 읽기) - 내부 IP로 통일
   env: {
-    NEXT_PUBLIC_API_URL: process.env.NEXT_PUBLIC_API_URL || "http://192.168.0.70:8080/api",
+    NEXT_PUBLIC_API_URL: process.env.NEXT_PUBLIC_API_URL || "http://39.117.244.52:8080/api",
   },
 };