diff --git a/assets/scripts/auth.js b/assets/scripts/auth.js
index 5d582a3..71d4de4 100644
--- a/assets/scripts/auth.js
+++ b/assets/scripts/auth.js
@@ -33,6 +33,7 @@
   async function authFetch(input, options = {}) {
     const response = await fetch(input, {
       ...options,
+      credentials: options.credentials || "same-origin",
       headers: authHeaders(options.headers),
     });
 
@@ -47,6 +48,7 @@
   async function login(username, password) {
     const response = await fetch("/api/auth/login", {
       method: "POST",
+      credentials: "same-origin",
       headers: { "Content-Type": "application/json" },
       body: JSON.stringify({ username, password }),
     });
@@ -60,6 +62,18 @@
     return data.token;
   }
 
+  async function hasServerSession() {
+    if (token()) return true;
+
+    const response = await fetch("/api/auth/check", {
+      method: "GET",
+      credentials: "same-origin",
+      cache: "no-store",
+    });
+
+    return response.status === 204;
+  }
+
   function initLoginForm() {
     const form = document.getElementById("login-form");
     if (!form) return;
@@ -91,15 +105,19 @@
     fetch: authFetch,
     headers: authHeaders,
     token,
-    logout: () => {
+    logout: async () => {
+      await fetch("/api/auth/logout", {
+        method: "POST",
+        credentials: "same-origin",
+      }).catch(() => {});
       window.localStorage.removeItem(TOKEN_KEY);
       redirectToLogin();
     },
   };
 
-  document.addEventListener("DOMContentLoaded", () => {
+  document.addEventListener("DOMContentLoaded", async () => {
     initLoginForm();
-    if (!isLoginPage() && !token()) {
+    if (!isLoginPage() && !(await hasServerSession())) {
       redirectToLogin();
     }
   });
diff --git a/posts/posts-list.org b/posts/posts-list.org
index c0ec23e..90d111b 100644
--- a/posts/posts-list.org
+++ b/posts/posts-list.org
@@ -4,7 +4,7 @@
 See the categories: @@html:<a href="../home/categories.html">Categories</a>@@
 
 * Posts:
-- [[file:career/career-list.org][Career List]] @@html:<span class="post-date">09-05-2026 00:54</span>@@ 
+- [[file:career/career-list.org][Career List]] @@html:<span class="post-date">09-05-2026 01:10</span>@@ 
 - [[file:posts-list.sync-conflict-20260509-005434-VT6366A.org][Posts List]] @@html:<span class="post-date">09-05-2026 00:54</span>@@ 
 - [[file:posts-list.sync-conflict-20260417-233432-VT6366A.org][Posts List]] @@html:<span class="post-date">14-04-2026 16:36</span>@@ 
 - [[file:career/ha-dr.org][High Availability, Disaster Recovery and Business Continuity]] @@html:<span class="post-date">11-03-2026 17:18</span>@@ @@html:<a href="/tags/learning.html"><span class="post-tag">learning</span></a>@@ @@html:<a href="/tags/notes.html"><span class="post-tag">notes</span></a>@@
diff --git a/sitemap.org b/sitemap.org
index 767257a..66bd71d 100644
--- a/sitemap.org
+++ b/sitemap.org
@@ -13,12 +13,12 @@
   - [[file:tags/notes.org][Tag: notes]]
   - [[file:tags/review.org][Tag: review]]
   - [[file:tags/website.org][Tag: website]]
-  - [[file:tags/life.org][Tag: life]]
   - [[file:tags/update.org][Tag: update]]
-  - [[file:tags/insights.org][Tag: insights]]
-  - [[file:tags/emacs.org][Tag: emacs]]
+  - [[file:tags/life.org][Tag: life]]
   - [[file:tags/education.org][Tag: education]]
+  - [[file:tags/insights.org][Tag: insights]]
   - [[file:tags/reading.org][Tag: reading]]
+  - [[file:tags/emacs.org][Tag: emacs]]
   - [[file:tags/maths.org][Tag: maths]]
 - books
   - [[file:books/books-list.org][Books List]]