feat: 공지 탭 추가

frontend/nginx.conf

@@ -1,3 +1,6 @@
+# IP당 로그인 요청 제한 (분당 5회)
+limit_req_zone $binary_remote_addr zone=login_limit:10m rate=5r/m;
+
 server {
     listen 80;
     root /usr/share/nginx/html;
@@ -7,6 +10,19 @@ server {
         try_files $uri $uri/ /index.html;
     }
 
+    # 로그인 API - rate limiting 적용
+    location /api/auth/login {
+        limit_req zone=login_limit burst=3 nodelay;
+        limit_req_status 429;
+
+        proxy_pass http://backend-service.web-portal.svc.cluster.local:8000/api/auth/login;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_read_timeout 60s;
+        proxy_connect_timeout 10s;
+    }
+
     location /api/ {
         proxy_pass http://backend-service.web-portal.svc.cluster.local:8000/api/;
         proxy_set_header Host $host;
@@ -19,4 +35,4 @@ server {
     location /health {
         proxy_pass http://backend-service.web-portal.svc.cluster.local:8000/health;
     }
-}
+}