diff --git a/CONFIGURATION.md b/config/CONFIGURATION.md
similarity index 81%
rename from CONFIGURATION.md
rename to config/CONFIGURATION.md
index c6b85dc..2c35d71 100644
--- a/CONFIGURATION.md
+++ b/config/CONFIGURATION.md
@@ -7,6 +7,8 @@ site:
   # Informations du site
 theme:
   # Apparence
+authentication:
+  # Authentification (optionnel)
 sections:
   # Liste des sections et liens
 ```
@@ -46,6 +48,24 @@ theme:
   background: "gradient"
 ```
 
+## `authentication`
+
+Configuration optionnelle pour l'authentification via un reverse proxy (Authelia, Authentik, etc.).
+
+| Champ | Requis | Type | Défaut | Description |
+|---|---|---|---|---|
+| `logout_url` | Oui | chaîne (URL) | — | URL de déconnexion (ex: `"https://auth.example.com/logout"`) |
+| `header_format` | Non | chaîne | `"Remote-User"` | Nom de l'en-tête HTTP indiquant que l'utilisateur est connecté |
+| `username` | Non | chaîne | — | Nom de l'en-tête HTTP contenant le nom d'utilisateur (ex: `"Remote-User"`). Affiche le nom dans le header quand renseigné. |
+
+Quand l'en-tête défini par `header_format` est présent dans la requête, un bouton de déconnexion apparaît à droite du bouton thème.
+
+```yaml
+authentication:
+  logout_url: "https://auth.example.com/logout"
+  header_format: "Remote-User"
+```
+
 ## `sections`
 
 Tableau de sections. Chaque section contient :
@@ -124,6 +144,10 @@ theme:
   accent: "#8b5cf6"
   background: "gradient"
 
+authentication:
+  logout_url: "https://auth.example.com/logout"
+  header_format: "Remote-User"
+
 sections:
   - id: "services"
     title: "Services"
diff --git a/config/dashboard.yml b/config/dashboard.yml
index 819e1b6..028e9af 100644
--- a/config/dashboard.yml
+++ b/config/dashboard.yml
@@ -1,7 +1,8 @@
 site:
   name: "Soch Family"
-  title: "Les applications de la famille"
-  #logoUrl: ""
+  title: " "
+  #title: "Les applications de la famille"
+  logoUrl: "https://immich.socheleau.fr/api/assets/e010423f-ca95-45a4-a9ee-9bb1a5a48688/thumbnail?slug=us_6&size=preview&c=IhgKJYiHg4ZfhXh6h5aJp5eAdQlJ&edited=true"
   #description: "Accès rapide à nos services"
   showFooter: false
 
@@ -10,10 +11,16 @@ theme:
   accent: "#8b5cf6"
   background: "gradient"
 
+authentication:
+  logout_url: "https://auth.socheleau.fr/logout"
+  header_format: "Remote-User"
+  username: "Remote-User"
+
 sections:
   - id: "global"
     title: "Global"
     description: "Services accessibles à toute la famille"
+    cardLayout: "horizontal"
     links:
       - id: "nextcloud"
         name: "Nextcloud"
diff --git a/src/app/page.tsx b/src/app/page.tsx
index 49ff2f8..351ccf8 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -1,3 +1,4 @@
+import { headers } from "next/headers"
 import { getConfig } from "@/lib/config"
 import { Dashboard } from "@/components/dashboard/Dashboard"
 import { ErrorDisplay } from "@/components/ui/ErrorDisplay"
@@ -18,12 +19,25 @@ function getConfigResult() {
   }
 }
 
-export default function Home() {
+export default async function Home() {
   const result = getConfigResult()
 
   if (!result.ok) {
     return <ErrorDisplay message={result.message} />
   }
 
-  return <Dashboard config={result.config} />
+  const { config } = result
+  const authHeader = config.authentication?.header_format ?? "Remote-User"
+  const usernameHeader = config.authentication?.username
+  const headersList = await headers()
+  const isAuthenticated = config.authentication != null && headersList.has(authHeader)
+  const username = isAuthenticated && usernameHeader ? headersList.get(usernameHeader) ?? null : null
+
+  return (
+    <Dashboard
+      config={config}
+      isAuthenticated={isAuthenticated}
+      username={username}
+    />
+  )
 }
diff --git a/src/components/dashboard/Dashboard.tsx b/src/components/dashboard/Dashboard.tsx
index bea442b..0acb7fe 100644
--- a/src/components/dashboard/Dashboard.tsx
+++ b/src/components/dashboard/Dashboard.tsx
@@ -4,12 +4,20 @@ import type { DashboardConfig } from "@/types/config"
 
 interface DashboardProps {
   config: DashboardConfig
+  isAuthenticated?: boolean
+  username?: string | null
 }
 
-export function Dashboard({ config }: DashboardProps) {
+export function Dashboard({ config, isAuthenticated = false, username = null }: DashboardProps) {
   return (
     <div className="dashboard-root mx-auto flex w-full max-w-7xl flex-col px-4 py-8 sm:px-6 lg:px-8">
-      <DashboardHeader site={config.site} initialTheme={config.theme.mode} />
+      <DashboardHeader
+        site={config.site}
+        initialTheme={config.theme.mode}
+        authentication={config.authentication}
+        isAuthenticated={isAuthenticated}
+        username={username}
+      />
       <main className="flex flex-col gap-12">
         {config.sections.map((section, index) => (
           <DashboardSection key={section.id} section={section} sectionIndex={index} />
diff --git a/src/components/dashboard/DashboardHeader.tsx b/src/components/dashboard/DashboardHeader.tsx
index 9337cc2..b357b18 100644
--- a/src/components/dashboard/DashboardHeader.tsx
+++ b/src/components/dashboard/DashboardHeader.tsx
@@ -1,14 +1,17 @@
 "use client"
 
 import { useState, useEffect } from "react"
-import type { SiteConfig } from "@/types/config"
+import type { SiteConfig, AuthenticationConfig } from "@/types/config"
 
 interface DashboardHeaderProps {
   site: SiteConfig
   initialTheme: "dark" | "light"
+  authentication?: AuthenticationConfig
+  isAuthenticated?: boolean
+  username?: string | null
 }
 
-export function DashboardHeader({ site, initialTheme }: DashboardHeaderProps) {
+export function DashboardHeader({ site, initialTheme, authentication, isAuthenticated = false, username = null }: DashboardHeaderProps) {
   const [isLight, setIsLight] = useState(initialTheme === "light")
 
   useEffect(() => {
@@ -47,10 +50,10 @@ export function DashboardHeader({ site, initialTheme }: DashboardHeaderProps) {
           </div>
         </div>
         <div className="flex items-center gap-3">
-          {site.description && (
-            <p className="hidden text-sm text-[var(--text-tertiary)] lg:block">
-              {site.description}
-            </p>
+          {isAuthenticated && username && (
+            <span className="hidden text-sm text-[var(--text-secondary)] lg:block">
+              {username}
+            </span>
           )}
           <button
             type="button"
@@ -103,11 +106,40 @@ export function DashboardHeader({ site, initialTheme }: DashboardHeaderProps) {
               </svg>
             )}
           </button>
+          {isAuthenticated && authentication && (
+            <a
+              href={authentication.logout_url}
+              className="flex size-10 items-center justify-center rounded-lg border transition-colors hover:opacity-80 active:opacity-60 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-[var(--focus-ring)] sm:size-9"
+              style={{
+                backgroundColor: "rgba(128,128,128,0.15)",
+                borderColor: "rgba(128,128,128,0.25)",
+                color: "var(--text-tertiary)",
+              }}
+              aria-label="Déconnexion"
+            >
+              <svg
+                xmlns="http://www.w3.org/2000/svg"
+                width="18"
+                height="18"
+                viewBox="0 0 24 24"
+                fill="none"
+                stroke="currentColor"
+                strokeWidth="2"
+                strokeLinecap="round"
+                strokeLinejoin="round"
+                aria-hidden="true"
+              >
+                <path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4" />
+                <polyline points="16 17 21 12 16 7" />
+                <line x1="21" x2="9" y1="12" y2="12" />
+              </svg>
+            </a>
+          )}
         </div>
       </div>
-      {site.description && (
-        <p className="text-sm text-[var(--text-tertiary)] lg:hidden">
-          {site.description}
+      {isAuthenticated && username && (
+        <p className="text-sm text-[var(--text-secondary)] lg:hidden">
+          {username}
         </p>
       )}
     </header>
diff --git a/src/lib/validation.ts b/src/lib/validation.ts
index 8b2c089..64543f0 100644
--- a/src/lib/validation.ts
+++ b/src/lib/validation.ts
@@ -39,6 +39,12 @@ export const siteSchema = z.object({
   showFooter: z.boolean().optional().default(true),
 })
 
+export const authenticationSchema = z.object({
+  logout_url: z.string().url("Invalid logout URL").min(1, "Logout URL is required"),
+  header_format: z.string().optional().default("Remote-User"),
+  username: z.string().optional(),
+})
+
 export const dashboardConfigSchema = z.object({
   site: siteSchema,
   theme: themeSchema.optional().default({
@@ -46,5 +52,6 @@ export const dashboardConfigSchema = z.object({
     accent: "#8b5cf6",
     background: "gradient",
   }),
+  authentication: authenticationSchema.optional(),
   sections: z.array(sectionSchema).default([]),
 })
diff --git a/src/types/config.ts b/src/types/config.ts
index d4c1151..ef2d241 100644
--- a/src/types/config.ts
+++ b/src/types/config.ts
@@ -32,8 +32,15 @@ export interface SectionConfig {
   links: LinkConfig[]
 }
 
+export interface AuthenticationConfig {
+  logout_url: string
+  header_format?: string
+  username?: string
+}
+
 export interface DashboardConfig {
   site: SiteConfig
   theme: ThemeConfig
+  authentication?: AuthenticationConfig
   sections: SectionConfig[]
 }