diff --git a/adminfront/src/app/routes.tsx b/adminfront/src/app/routes.tsx
index 44a2c5b0..913491e2 100644
--- a/adminfront/src/app/routes.tsx
+++ b/adminfront/src/app/routes.tsx
@@ -7,6 +7,7 @@ import AuthPage from "../features/auth/AuthPage";
 import DashboardPage from "../features/dashboard/DashboardPage";
 import GlobalOverviewPage from "../features/overview/GlobalOverviewPage";
 import LoginPage from "../features/auth/LoginPage";
+import AuthCallbackPage from "../features/auth/AuthCallbackPage";
 import TenantGroupCreatePage from "../features/tenant-groups/routes/TenantGroupCreatePage";
 import TenantGroupDetailPage from "../features/tenant-groups/routes/TenantGroupDetailPage";
 import TenantGroupListPage from "../features/tenant-groups/routes/TenantGroupListPage";
@@ -29,6 +30,10 @@ export const router = createBrowserRouter(
       path: "/login",
       element: <LoginPage />,
     },
+    {
+      path: "/auth/callback",
+      element: <AuthCallbackPage />,
+    },
     {
       path: "/",
       element: <AppLayout />,
diff --git a/adminfront/src/features/auth/AuthCallbackPage.tsx b/adminfront/src/features/auth/AuthCallbackPage.tsx
new file mode 100644
index 00000000..fb98fa68
--- /dev/null
+++ b/adminfront/src/features/auth/AuthCallbackPage.tsx
@@ -0,0 +1,34 @@
+import { useEffect } from "react";
+import { useNavigate, useSearchParams } from "react-router-dom";
+import { ShieldHalf } from "lucide-react";
+
+function AuthCallbackPage() {
+  const navigate = useNavigate();
+  const [searchParams] = useSearchParams();
+
+  useEffect(() => {
+    const token = searchParams.get("token");
+    if (token) {
+      window.localStorage.setItem("admin_session", token);
+      // Redirect to home after a short delay or immediately
+      navigate("/", { replace: true });
+    } else {
+      console.error("No token found in callback URL");
+      navigate("/login", { replace: true });
+    }
+  }, [navigate, searchParams]);
+
+  return (
+    <div className="flex min-h-screen items-center justify-center bg-background">
+      <div className="flex flex-col items-center gap-4">
+        <div className="flex h-16 w-16 items-center justify-center rounded-2xl bg-primary/15 text-primary shadow-lg animate-pulse">
+          <ShieldHalf size={32} />
+        </div>
+        <div className="text-lg font-semibold">인증 완료 중...</div>
+        <p className="text-sm text-muted-foreground">세션을 동기화하고 있습니다.</p>
+      </div>
+    </div>
+  );
+}
+
+export default AuthCallbackPage;
diff --git a/adminfront/src/features/auth/LoginPage.tsx b/adminfront/src/features/auth/LoginPage.tsx
index 3e553d80..1897dc57 100644
--- a/adminfront/src/features/auth/LoginPage.tsx
+++ b/adminfront/src/features/auth/LoginPage.tsx
@@ -29,10 +29,16 @@ function LoginPage() {
     return () => window.removeEventListener("message", handleMessage);
   }, [navigate]);
 
-  const handleSSOLogin = () => {
+  const handleSSOLogin = (mode: "popup" | "redirect" = "popup") => {
     const userfrontUrl = import.meta.env.USERFRONT_URL || "https://sso.hmac.kr";
-    const loginUrl = `${userfrontUrl}/ssologin?source=adminfront`;
+    const callbackUrl = `${window.location.origin}/auth/callback`;
+    const loginUrl = `${userfrontUrl}/ssologin?source=adminfront&redirect_uri=${encodeURIComponent(callbackUrl)}`;
     
+    if (mode === "redirect") {
+        window.location.href = loginUrl;
+        return;
+    }
+
     const width = 500;
     const height = 700;
     const left = window.screen.width / 2 - width / 2;
@@ -54,7 +60,8 @@ function LoginPage() {
         }
       }, 1000);
     } else {
-      alert("팝업 차단이 설정되어 있습니다. 팝업 허용 후 다시 시도해 주세요.");
+      // If popup blocked, fallback to redirect
+      window.location.href = loginUrl;
     }
   };
 
@@ -83,9 +90,9 @@ function LoginPage() {
               Baron 통합 인증(SSO)을 통해 관리자 페이지에 접속합니다.
             </CardDescription>
           </CardHeader>
-          <CardContent className="pt-4 pb-8">
+          <CardContent className="pt-4 pb-8 space-y-3">
             <Button 
-                onClick={handleSSOLogin} 
+                onClick={() => handleSSOLogin("popup")} 
                 className="w-full h-14 text-lg font-semibold flex gap-3 shadow-lg"
                 disabled={isLoggingIn}
             >
@@ -97,11 +104,20 @@ function LoginPage() {
               ) : (
                 <>
                   <ShieldHalf size={22} />
-                  SSO 계정으로 로그인
+                  팝업창으로 로그인
                   <ExternalLink size={16} className="opacity-50" />
                 </>
               )}
             </Button>
+
+            <Button 
+                variant="outline"
+                onClick={() => handleSSOLogin("redirect")} 
+                className="w-full h-12 text-base font-medium flex gap-3"
+                disabled={isLoggingIn}
+            >
+              현재 창에서 로그인 (리다이렉트)
+            </Button>
             
             <p className="mt-6 text-xs text-center text-muted-foreground leading-relaxed">
               관리자 전역 세션은 보안을 위해 15분간 유지됩니다.<br />
diff --git a/userfront/lib/core/services/web_auth_integration_web.dart b/userfront/lib/core/services/web_auth_integration_web.dart
index 7e227de3..ab5c0a3d 100644
--- a/userfront/lib/core/services/web_auth_integration_web.dart
+++ b/userfront/lib/core/services/web_auth_integration_web.dart
@@ -5,6 +5,21 @@ import 'dart:html' as html;
 import 'package:flutter/foundation.dart';
 
 void implSendLoginSuccess(String token) {
+  final uri = Uri.parse(html.window.location.href);
+  final redirectUri = uri.queryParameters['redirect_uri'];
+
+  if (redirectUri != null && redirectUri.isNotEmpty) {
+    // Redirection flow
+    final target = Uri.parse(redirectUri);
+    final query = Map<String, String>.from(target.queryParameters);
+    query['token'] = token;
+    final finalUri = target.replace(queryParameters: query);
+    
+    debugPrint('Redirecting to: ${finalUri.toString()}');
+    html.window.location.href = finalUri.toString();
+    return;
+  }
+
   final message = {'type': 'LOGIN_SUCCESS', 'token': token};
   
   if (html.window.opener != null) {
diff --git a/userfront/lib/main.dart b/userfront/lib/main.dart
index 5c94c1b1..3138ef12 100644
--- a/userfront/lib/main.dart
+++ b/userfront/lib/main.dart
@@ -98,6 +98,13 @@ final _router = GoRouter(
         return LoginScreen(key: state.pageKey, loginChallenge: loginChallenge);
       },
     ),
+    GoRoute(
+      path: '/ssologin',
+      builder: (context, state) {
+        _routerLogger.info("Navigating to /ssologin");
+        return LoginScreen(key: state.pageKey);
+      },
+    ),
     GoRoute(
       path: '/login',
       builder: (context, state) {