diff --git a/.gitignore b/.gitignore
index ed408701..e6fce2a6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,5 +4,3 @@
 /src/node_modules
 .DS_Store
 *.swp
-# lowdb data file
-db.json
\ No newline at end of file
diff --git a/src/app/app.vue b/src/app/app.vue
index 860b7031..a8f0a0f7 100644
--- a/src/app/app.vue
+++ b/src/app/app.vue
@@ -8,13 +8,8 @@
 
 <script setup lang="ts">
 const globalStore = useGlobalStore();
-globalStore.fetchTrafficStats();
-globalStore.fetchChartType();
+globalStore.fetchFeatures();
 globalStore.fetchRelease();
-globalStore.fetchOneTimeLinks();
-globalStore.fetchSortClients();
-globalStore.fetchExpireTime();
-globalStore.fetchRememberMe();
 useHead({
   bodyAttrs: {
     class: 'bg-gray-50 dark:bg-neutral-800',
diff --git a/src/app/components/Client/Charts.vue b/src/app/components/Client/Charts.vue
index 4dbf0f72..1b64bdf7 100644
--- a/src/app/components/Client/Charts.vue
+++ b/src/app/components/Client/Charts.vue
@@ -1,13 +1,13 @@
 <template>
   <div
-    v-if="globalStore.uiChartType"
-    :class="`absolute z-0 bottom-0 left-0 right-0 h-6 ${globalStore.uiChartType === 1 && 'line-chart'}`"
+    v-if="globalStore.features.trafficStats.type"
+    :class="`absolute z-0 bottom-0 left-0 right-0 h-6 ${globalStore.features.trafficStats.type === 1 && 'line-chart'}`"
   >
     <UiChart :options="chartOptionsTX" :series="client.transferTxSeries" />
   </div>
   <div
-    v-if="globalStore.uiChartType"
-    :class="`absolute z-0 top-0 left-0 right-0 h-6 ${globalStore.uiChartType === 1 && 'line-chart'}`"
+    v-if="globalStore.features.trafficStats.type"
+    :class="`absolute z-0 top-0 left-0 right-0 h-6 ${globalStore.features.trafficStats.type === 1 && 'line-chart'}`"
   >
     <UiChart
       :options="chartOptionsRX"
@@ -32,8 +32,10 @@ const chartOptionsTX = computed(() => {
     ...chartOptions,
     colors: [CHART_COLORS.tx[theme.value]],
   };
-  opts.chart.type = UI_CHART_TYPES[globalStore.uiChartType]?.type || undefined;
-  opts.stroke.width = UI_CHART_TYPES[globalStore.uiChartType]?.strokeWidth ?? 0;
+  opts.chart.type =
+    UI_CHART_TYPES[globalStore.features.trafficStats.type]?.type || undefined;
+  opts.stroke.width =
+    UI_CHART_TYPES[globalStore.features.trafficStats.type]?.strokeWidth ?? 0;
   return opts;
 });
 
@@ -42,8 +44,10 @@ const chartOptionsRX = computed(() => {
     ...chartOptions,
     colors: [CHART_COLORS.rx[theme.value]],
   };
-  opts.chart.type = UI_CHART_TYPES[globalStore.uiChartType]?.type || undefined;
-  opts.stroke.width = UI_CHART_TYPES[globalStore.uiChartType]?.strokeWidth ?? 0;
+  opts.chart.type =
+    UI_CHART_TYPES[globalStore.features.trafficStats.type]?.type || undefined;
+  opts.stroke.width =
+    UI_CHART_TYPES[globalStore.features.trafficStats.type]?.strokeWidth ?? 0;
   return opts;
 });
 
diff --git a/src/app/components/Client/Client.vue b/src/app/components/Client/Client.vue
index 77c5031c..71bd6b4c 100644
--- a/src/app/components/Client/Client.vue
+++ b/src/app/components/Client/Client.vue
@@ -14,7 +14,7 @@
           >
             <ClientAddress :client="client" />
             <ClientInlineTransfer
-              v-if="!globalStore.uiTrafficStats"
+              v-if="!globalStore.features.trafficStats.enabled"
               :client="client"
             />
             <ClientLastSeen :client="client" />
@@ -25,7 +25,7 @@
 
         <!-- Info -->
         <div
-          v-if="globalStore.uiTrafficStats"
+          v-if="globalStore.features.trafficStats.enabled"
           class="flex gap-2 items-center shrink-0 text-gray-400 dark:text-neutral-400 text-xs mt-px justify-end"
         >
           <ClientTransfer :client="client" />
diff --git a/src/app/components/Client/ExpireDate.vue b/src/app/components/Client/ExpireDate.vue
index 0381e4b8..c36f4a58 100644
--- a/src/app/components/Client/ExpireDate.vue
+++ b/src/app/components/Client/ExpireDate.vue
@@ -1,6 +1,6 @@
 <template>
   <div
-    v-show="globalStore.enableExpireTime"
+    v-show="globalStore.features.clientExpiration.enabled"
     class="block md:inline-block pb-1 md:pb-0 text-gray-500 dark:text-neutral-400 text-xs"
   >
     <span class="group">
@@ -24,7 +24,7 @@
       <span
         v-show="clientEditExpireDateId !== client.id"
         class="inline-block"
-        >{{ expiredDateFormat(client.expireAt) }}</span
+        >{{ expiredDateFormat(client.expiresAt) }}</span
       >
 
       <!-- Edit -->
@@ -32,8 +32,8 @@
         v-show="clientEditExpireDateId !== client.id"
         class="cursor-pointer opacity-0 group-hover:opacity-100 transition-opacity"
         @click="
-          clientEditExpireDate = client.expireAt
-            ? client.expireAt.slice(0, 10)
+          clientEditExpireDate = client.expiresAt
+            ? client.expiresAt.slice(0, 10)
             : 'yyyy-mm-dd';
           clientEditExpireDateId = client.id;
           nextTick(() => clientExpireDateInput?.select());
diff --git a/src/app/components/Client/LastSeen.vue b/src/app/components/Client/LastSeen.vue
index aec14361..50a00c93 100644
--- a/src/app/components/Client/LastSeen.vue
+++ b/src/app/components/Client/LastSeen.vue
@@ -4,7 +4,7 @@
     class="text-gray-400 dark:text-neutral-500 whitespace-nowrap"
     :title="$t('lastSeen') + dateTime(new Date(client.latestHandshakeAt))"
   >
-    {{ !globalStore.uiTrafficStats ? ' · ' : ''
+    {{ !globalStore.features.trafficStats.enabled ? ' · ' : ''
     }}{{ timeago(new Date(client.latestHandshakeAt)) }}
   </span>
 </template>
diff --git a/src/app/components/Client/OneTimeLink.vue b/src/app/components/Client/OneTimeLink.vue
index 2fb0a858..f859cd1c 100644
--- a/src/app/components/Client/OneTimeLink.vue
+++ b/src/app/components/Client/OneTimeLink.vue
@@ -1,9 +1,7 @@
 <template>
   <div
     v-if="
-      globalStore.enableOneTimeLinks &&
-      client.oneTimeLink !== null &&
-      client.oneTimeLink !== ''
+      globalStore.features.oneTimeLinks.enabled && client.oneTimeLink !== null
     "
     :ref="'client-' + client.id + '-link'"
     class="text-gray-400 text-xs"
diff --git a/src/app/components/Client/OneTimeLinkBtn.vue b/src/app/components/Client/OneTimeLinkBtn.vue
index 284a17d1..c6d21158 100644
--- a/src/app/components/Client/OneTimeLinkBtn.vue
+++ b/src/app/components/Client/OneTimeLinkBtn.vue
@@ -1,6 +1,6 @@
 <template>
   <button
-    v-if="globalStore.enableOneTimeLinks"
+    v-if="globalStore.features.oneTimeLinks.enabled"
     :disabled="!client.downloadableConfig"
     class="align-middle inline-block bg-gray-100 dark:bg-neutral-600 dark:text-neutral-300 p-2 rounded transition"
     :class="{
diff --git a/src/app/components/Clients/CreateDialog.vue b/src/app/components/Clients/CreateDialog.vue
index 81affb69..14847bf9 100644
--- a/src/app/components/Clients/CreateDialog.vue
+++ b/src/app/components/Clients/CreateDialog.vue
@@ -71,7 +71,10 @@
                   />
                 </p>
               </div>
-              <div v-show="globalStore.enableExpireTime" class="mt-2">
+              <div
+                v-show="globalStore.features.clientExpiration.enabled"
+                class="mt-2"
+              >
                 <p class="text-sm text-gray-500">
                   <label
                     class="block text-gray-900 dark:text-neutral-200 text-sm font-bold mb-2"
diff --git a/src/app/components/Clients/Sort.vue b/src/app/components/Clients/Sort.vue
index bf1002be..0a7204c1 100644
--- a/src/app/components/Clients/Sort.vue
+++ b/src/app/components/Clients/Sort.vue
@@ -1,6 +1,6 @@
 <template>
   <button
-    v-if="globalStore.enableSortClient"
+    v-if="globalStore.features.sortClients.enabled"
     class="hover:bg-red-800 hover:border-red-800 hover:text-white text-gray-700 dark:text-neutral-200 max-md:border-x-0 border-2 border-gray-100 dark:border-neutral-600 py-2 px-4 md:rounded inline-flex items-center transition"
     @click="globalStore.sortClient = !globalStore.sortClient"
   >
diff --git a/src/app/layouts/Header.vue b/src/app/layouts/Header.vue
index 4f278c74..ace34acf 100644
--- a/src/app/layouts/Header.vue
+++ b/src/app/layouts/Header.vue
@@ -36,7 +36,7 @@
         </button>
         <!-- Show / hide charts -->
         <label
-          v-if="globalStore.uiChartType > 0"
+          v-if="globalStore.features.trafficStats.type > 0"
           class="inline-flex items-center justify-center cursor-pointer w-8 h-8 rounded-full bg-gray-200 hover:bg-gray-300 dark:bg-neutral-700 dark:hover:bg-neutral-600 whitespace-nowrap transition group"
           :title="$t('toggleCharts')"
         >
@@ -96,8 +96,6 @@ const currentRelease = ref<null | number>(null);
 const latestRelease = ref<null | { version: number; changelog: string }>(null);
 
 const theme = useTheme();
-
-globalStore.fetchChartType();
 const uiShowCharts = ref(getItem('uiShowCharts') === '1');
 
 function toggleTheme() {
diff --git a/src/app/pages/login.vue b/src/app/pages/login.vue
index d034ee3a..11a5ae85 100644
--- a/src/app/pages/login.vue
+++ b/src/app/pages/login.vue
@@ -37,7 +37,6 @@
       />
 
       <label
-        v-if="globalStore.rememberMeEnabled"
         class="inline-block mb-5 cursor-pointer whitespace-nowrap"
         :title="$t('titleRememberMe')"
       >
@@ -89,7 +88,6 @@ const remember = ref(false);
 const username = ref<null | string>(null);
 const password = ref<null | string>(null);
 const authStore = useAuthStore();
-const globalStore = useGlobalStore();
 
 async function login(e: Event) {
   e.preventDefault();
diff --git a/src/app/stores/auth.ts b/src/app/stores/auth.ts
index 06af7b36..c7b09590 100644
--- a/src/app/stores/auth.ts
+++ b/src/app/stores/auth.ts
@@ -5,7 +5,7 @@ export const useAuthStore = defineStore('Auth', () => {
    * @throws if unsuccessful
    */
   async function signup(username: string, password: string) {
-    const response = await api.newAccount({ username, password });
+    const response = await api.createAccount({ username, password });
     return response.success;
   }
 
diff --git a/src/app/stores/clients.ts b/src/app/stores/clients.ts
index 65b24d64..49adaed1 100644
--- a/src/app/stores/clients.ts
+++ b/src/app/stores/clients.ts
@@ -108,7 +108,10 @@ export const useClientsStore = defineStore('Clients', () => {
       };
     });
 
-    if (globalStore.enableSortClient && transformedClients !== undefined) {
+    if (
+      globalStore.features.sortClients.enabled &&
+      transformedClients !== undefined
+    ) {
       transformedClients = sortByProperty(
         transformedClients,
         'name',
diff --git a/src/app/stores/global.ts b/src/app/stores/global.ts
index d8bfcd62..80a19e25 100644
--- a/src/app/stores/global.ts
+++ b/src/app/stores/global.ts
@@ -1,17 +1,26 @@
 import { defineStore } from 'pinia';
 
 export const useGlobalStore = defineStore('Global', () => {
-  const uiChartType = ref(0);
   const uiShowCharts = ref(getItem('uiShowCharts') === '1');
   const currentRelease = ref<null | number>(null);
   const latestRelease = ref<null | { version: number; changelog: string }>(
     null
   );
-  const uiTrafficStats = ref(false);
-  const rememberMeEnabled = ref(false);
-  const enableExpireTime = ref(false);
-  const enableOneTimeLinks = ref(false);
-  const enableSortClient = ref(false);
+  const features = ref({
+    trafficStats: {
+      enabled: false,
+      type: 0,
+    },
+    sortClients: {
+      enabled: false,
+    },
+    clientExpiration: {
+      enabled: false,
+    },
+    oneTimeLinks: {
+      enabled: false,
+    },
+  });
   const sortClient = ref(true); // Sort clients by name, true = asc, false = desc
 
   const { availableLocales, locale } = useI18n();
@@ -40,56 +49,23 @@ export const useGlobalStore = defineStore('Global', () => {
     latestRelease.value = release.value!.latestRelease;
   }
 
-  async function fetchChartType() {
-    const { data: chartType } = await api.getChartType();
-    uiChartType.value = chartType.value ?? 0;
-  }
-
-  async function fetchTrafficStats() {
-    const { data: trafficStats } = await api.getTrafficStats();
-    uiTrafficStats.value = trafficStats.value ?? false;
-  }
-
-  async function fetchOneTimeLinks() {
-    const { data: oneTimeLinks } = await api.getEnableOneTimeLinks();
-    enableOneTimeLinks.value = oneTimeLinks.value ?? false;
-  }
-
-  async function fetchSortClients() {
-    const { data: sortClients } = await api.getSortClients();
-    enableSortClient.value = sortClients.value ?? false;
-  }
-
-  async function fetchExpireTime() {
-    const { data: expireTime } = await api.getEnableExpireTime();
-    enableExpireTime.value = expireTime.value ?? false;
-  }
-
-  async function fetchRememberMe() {
-    const { data: rememberMe } = await api.getRememberMeEnabled();
-    rememberMeEnabled.value = rememberMe.value ?? false;
+  async function fetchFeatures() {
+    const { data: apiFeatures } = await api.getFeatures();
+    if (apiFeatures.value) {
+      features.value = apiFeatures.value;
+    }
   }
 
   const updateCharts = computed(() => {
-    return uiChartType.value > 0 && uiShowCharts.value;
+    return features.value.trafficStats.type > 0 && uiShowCharts.value;
   });
 
   return {
-    uiChartType,
     uiShowCharts,
-    uiTrafficStats,
     updateCharts,
-    rememberMeEnabled,
-    enableSortClient,
     sortClient,
-    enableExpireTime,
-    enableOneTimeLinks,
+    features,
     fetchRelease,
-    fetchChartType,
-    fetchTrafficStats,
-    fetchOneTimeLinks,
-    fetchSortClients,
-    fetchExpireTime,
-    fetchRememberMe,
+    fetchFeatures,
   };
 });
diff --git a/src/app/utils/api.ts b/src/app/utils/api.ts
index 3a8423b2..8172f2f0 100644
--- a/src/app/utils/api.ts
+++ b/src/app/utils/api.ts
@@ -11,36 +11,6 @@ class API {
     });
   }
 
-  async getRememberMeEnabled() {
-    return useFetch('/api/remember-me', {
-      method: 'get',
-    });
-  }
-
-  async getTrafficStats() {
-    return useFetch('/api/ui-traffic-stats', {
-      method: 'get',
-    });
-  }
-
-  async getChartType() {
-    return useFetch('/api/ui-chart-type', {
-      method: 'get',
-    });
-  }
-
-  async getEnableOneTimeLinks() {
-    return useFetch('/api/wg-enable-one-time-links', {
-      method: 'get',
-    });
-  }
-
-  async getEnableExpireTime() {
-    return useFetch('/api/wg-enable-expire-time', {
-      method: 'get',
-    });
-  }
-
   async getSession() {
     // TODO?: use useFetch
     return $fetch('/api/session', {
@@ -158,13 +128,7 @@ class API {
     });
   }
 
-  async getSortClients() {
-    return useFetch('/api/ui-sort-clients', {
-      method: 'get',
-    });
-  }
-
-  async newAccount({
+  async createAccount({
     username,
     password,
   }: {
@@ -176,6 +140,12 @@ class API {
       body: { username, password },
     });
   }
+
+  async getFeatures() {
+    return useFetch('/api/features', {
+      method: 'get',
+    });
+  }
 }
 
 type WGClientReturn = Awaited<
diff --git a/src/server/api/cnf/[clientOneTimeLink].ts b/src/server/api/cnf/[oneTimeLink].ts
similarity index 60%
rename from src/server/api/cnf/[clientOneTimeLink].ts
rename to src/server/api/cnf/[oneTimeLink].ts
index 5e2a058b..ffb0eb8b 100644
--- a/src/server/api/cnf/[clientOneTimeLink].ts
+++ b/src/server/api/cnf/[oneTimeLink].ts
@@ -1,30 +1,32 @@
 export default defineEventHandler(async (event) => {
   const system = await Database.getSystem();
-  if (!system)
-    throw createError({
-      statusCode: 500,
-      statusMessage: 'Invalid',
-    });
   if (!system.oneTimeLinks.enabled) {
     throw createError({
-      status: 404,
-      message: 'Invalid state',
+      statusCode: 404,
+      statusMessage: 'Invalid state',
     });
   }
-  // TODO: validate with zod
-  const clientOneTimeLink = getRouterParam(event, 'clientOneTimeLink');
+  const { oneTimeLink } = await getValidatedRouterParams(
+    event,
+    validateZod(oneTimeLinkType)
+  );
   const clients = await WireGuard.getClients();
   const client = clients.find(
-    (client) => client.oneTimeLink === clientOneTimeLink
+    (client) => client.oneTimeLink?.oneTimeLink === oneTimeLink
   );
-  if (!client) return;
+  if (!client) {
+    throw createError({
+      statusCode: 404,
+      statusMessage: 'Invalid One Time Link',
+    });
+  }
   const clientId = client.id;
   const config = await WireGuard.getClientConfiguration({ clientId });
   await WireGuard.eraseOneTimeLink({ clientId });
   setHeader(
     event,
     'Content-Disposition',
-    `attachment; filename="${clientOneTimeLink}.conf"`
+    `attachment; filename="${client.name}.conf"`
   );
   setHeader(event, 'Content-Type', 'text/plain');
   return config;
diff --git a/src/server/api/features.get.ts b/src/server/api/features.get.ts
new file mode 100644
index 00000000..c2868ede
--- /dev/null
+++ b/src/server/api/features.get.ts
@@ -0,0 +1,9 @@
+export default defineEventHandler(async () => {
+  const system = await Database.getSystem();
+  return {
+    trafficStats: system.trafficStats,
+    sortClients: system.sortClients,
+    clientExpiration: system.clientExpiration,
+    oneTimeLinks: system.oneTimeLinks,
+  };
+});
diff --git a/src/server/api/release.get.ts b/src/server/api/release.get.ts
index 6fe97555..ebca8838 100644
--- a/src/server/api/release.get.ts
+++ b/src/server/api/release.get.ts
@@ -1,11 +1,5 @@
 export default defineEventHandler(async () => {
   const system = await Database.getSystem();
-  if (!system)
-    throw createError({
-      statusCode: 500,
-      statusMessage: 'Invalid',
-    });
-
   const latestRelease = await fetchLatestRelease();
   return {
     currentRelease: system.release,
diff --git a/src/server/api/remember-me.get.ts b/src/server/api/remember-me.get.ts
deleted file mode 100644
index cf08d59f..00000000
--- a/src/server/api/remember-me.get.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-export default defineEventHandler(async (event) => {
-  setHeader(event, 'Content-Type', 'application/json');
-  // TODO: enable by default
-  return MAX_AGE > 0;
-});
diff --git a/src/server/api/session.post.ts b/src/server/api/session.post.ts
index c0250ff6..c4a9b7e3 100644
--- a/src/server/api/session.post.ts
+++ b/src/server/api/session.post.ts
@@ -23,17 +23,13 @@ export default defineEventHandler(async (event) => {
   }
 
   const system = await Database.getSystem();
-  if (!system)
-    throw createError({
-      statusCode: 500,
-      statusMessage: 'Invalid',
-    });
 
   const conf: SessionConfig = system.sessionConfig;
-  if (MAX_AGE && remember) {
+
+  if (remember) {
     conf.cookie = {
       ...(system.sessionConfig.cookie ?? {}),
-      maxAge: MAX_AGE,
+      maxAge: system.cookieMaxAge * 60,
     };
   }
 
diff --git a/src/server/api/ui-chart-type.get.ts b/src/server/api/ui-chart-type.get.ts
deleted file mode 100644
index 48ade476..00000000
--- a/src/server/api/ui-chart-type.get.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-export default defineEventHandler(async (event) => {
-  setHeader(event, 'Content-Type', 'application/json');
-  const system = await Database.getSystem();
-  if (!system)
-    throw createError({
-      statusCode: 500,
-      statusMessage: 'Invalid',
-    });
-
-  return system.trafficStats.type;
-});
diff --git a/src/server/api/ui-sort-clients.get.ts b/src/server/api/ui-sort-clients.get.ts
deleted file mode 100644
index 37262888..00000000
--- a/src/server/api/ui-sort-clients.get.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-export default defineEventHandler(async (event) => {
-  setHeader(event, 'Content-Type', 'application/json');
-  const system = await Database.getSystem();
-  if (!system)
-    throw createError({
-      statusCode: 500,
-      statusMessage: 'Invalid',
-    });
-
-  return system.sortClients.enabled;
-});
diff --git a/src/server/api/ui-traffic-stats.get.ts b/src/server/api/ui-traffic-stats.get.ts
deleted file mode 100644
index 12d969c8..00000000
--- a/src/server/api/ui-traffic-stats.get.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-export default defineEventHandler(async (event) => {
-  setHeader(event, 'Content-Type', 'application/json');
-  const system = await Database.getSystem();
-  if (!system)
-    throw createError({
-      statusCode: 500,
-      statusMessage: 'Invalid',
-    });
-
-  return system.trafficStats.enabled;
-});
diff --git a/src/server/api/wg-enable-expire-time.get.ts b/src/server/api/wg-enable-expire-time.get.ts
deleted file mode 100644
index 74389a00..00000000
--- a/src/server/api/wg-enable-expire-time.get.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-export default defineEventHandler(async (event) => {
-  setHeader(event, 'Content-Type', 'application/json');
-  const system = await Database.getSystem();
-  if (!system)
-    throw createError({
-      statusCode: 500,
-      statusMessage: 'Invalid',
-    });
-
-  return system.clientExpiration.enabled;
-});
diff --git a/src/server/api/wg-enable-one-time-links.get.ts b/src/server/api/wg-enable-one-time-links.get.ts
deleted file mode 100644
index 7b474c76..00000000
--- a/src/server/api/wg-enable-one-time-links.get.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-export default defineEventHandler(async (event) => {
-  setHeader(event, 'Content-Type', 'application/json');
-  const system = await Database.getSystem();
-  if (!system)
-    throw createError({
-      statusCode: 500,
-      statusMessage: 'Invalid',
-    });
-
-  return system.oneTimeLinks.enabled;
-});
diff --git a/src/server/api/wireguard/client/[clientId]/generateOneTimeLink.post.ts b/src/server/api/wireguard/client/[clientId]/generateOneTimeLink.post.ts
index 3af1dfda..b55f8be1 100644
--- a/src/server/api/wireguard/client/[clientId]/generateOneTimeLink.post.ts
+++ b/src/server/api/wireguard/client/[clientId]/generateOneTimeLink.post.ts
@@ -1,5 +1,6 @@
 export default defineEventHandler(async (event) => {
-  if (WG_ENABLE_ONE_TIME_LINKS === 'false') {
+  const system = await Database.getSystem();
+  if (!system.oneTimeLinks.enabled) {
     throw createError({
       status: 404,
       message: 'Invalid state',
diff --git a/src/server/middleware/session.ts b/src/server/middleware/session.ts
index 91ee154a..356862ba 100644
--- a/src/server/middleware/session.ts
+++ b/src/server/middleware/session.ts
@@ -2,12 +2,12 @@ export default defineEventHandler(async (event) => {
   const url = getRequestURL(event);
   if (
     !url.pathname.startsWith('/api/') ||
+    // TODO: only allowed on onboarding!
     url.pathname === '/api/account/new' ||
     url.pathname === '/api/session' ||
     url.pathname === '/api/lang' ||
     url.pathname === '/api/release' ||
-    url.pathname === '/api/ui-chart-type' ||
-    url.pathname === '/api/ui-traffic-stats'
+    url.pathname === '/api/features'
   ) {
     return;
   }
diff --git a/src/server/middleware/setup.ts b/src/server/middleware/setup.ts
index d0e3a3e9..ede7f88e 100644
--- a/src/server/middleware/setup.ts
+++ b/src/server/middleware/setup.ts
@@ -4,7 +4,8 @@ export default defineEventHandler(async (event) => {
 
   if (
     url.pathname.startsWith('/setup') ||
-    url.pathname === '/api/account/new'
+    url.pathname === '/api/account/new' ||
+    url.pathname === '/api/features'
   ) {
     return;
   }
diff --git a/src/server/utils/Database.ts b/src/server/utils/Database.ts
index b240f6f8..3de346d9 100644
--- a/src/server/utils/Database.ts
+++ b/src/server/utils/Database.ts
@@ -13,5 +13,4 @@ provider.connect().catch((err) => {
 });
 
 // TODO: check if old config exists and tell user about migration path
-
 export default provider;
diff --git a/src/server/utils/WireGuard.ts b/src/server/utils/WireGuard.ts
index e72c2d95..0715de20 100644
--- a/src/server/utils/WireGuard.ts
+++ b/src/server/utils/WireGuard.ts
@@ -1,127 +1,39 @@
 import fs from 'node:fs/promises';
 import path from 'path';
-import debug_logger from 'debug';
+import debug from 'debug';
 import crypto from 'node:crypto';
 import QRCode from 'qrcode';
 import CRC32 from 'crc-32';
 
-const debug = debug_logger('WireGuard');
-
-type Server = {
-  privateKey: string;
-  publicKey: string;
-  address: string;
-};
-
-type Client = {
-  id: string;
-  name: string;
-  address: string;
-  privateKey: string;
-  publicKey: string;
-  preSharedKey: string;
-  createdAt: string;
-  updatedAt: string;
-  expireAt: string | null;
-  endpoint: string | null;
-  enabled: boolean;
-  allowedIPs?: never;
-  oneTimeLink: string | null;
-  oneTimeLinkExpiresAt: string | null;
-};
-
-type Config = {
-  server: Server;
-  clients: Record<string, Client>;
-};
+import type { NewClient } from '~~/services/database/repositories/client';
 
-class WireGuard {
-  #configCache: Config | null = null;
-  async __buildConfig() {
-    if (!WG_HOST) {
-      throw new Error('WG_HOST Environment Variable Not Set!');
-    }
-
-    debug('Loading configuration...');
-    this.#configCache = null;
-    try {
-      const config = await fs.readFile(path.join(WG_PATH, 'wg0.json'), 'utf8');
-      const parsedConfig = JSON.parse(config);
-      debug('Configuration loaded.');
-      return parsedConfig as Config;
-    } catch {
-      const privateKey = await exec('wg genkey');
-      const publicKey = await exec(`echo ${privateKey} | wg pubkey`, {
-        log: 'echo ***hidden*** | wg pubkey',
-      });
-      const address = WG_DEFAULT_ADDRESS.replace('x', '1');
-
-      const config: Config = {
-        server: {
-          privateKey,
-          publicKey,
-          address,
-        },
-        clients: {},
-      };
-      debug('Configuration generated.');
-      return config;
-    }
-  }
-
-  async getConfig(): Promise<Config> {
-    if (this.#configCache !== null) {
-      return this.#configCache;
-    }
-    const config = await this.__buildConfig();
-
-    await this.__saveConfig(config);
-    await exec('wg-quick down wg0').catch(() => {});
-    await exec('wg-quick up wg0').catch((err) => {
-      if (
-        err &&
-        err.message &&
-        err.message.includes('Cannot find device "wg0"')
-      ) {
-        throw new Error(
-          'WireGuard exited with the error: Cannot find device "wg0"\nThis usually means that your host\'s kernel does not support WireGuard!'
-        );
-      }
-
-      throw err;
-    });
-    // await Util.exec(`iptables -t nat -A POSTROUTING -s ${WG_DEFAULT_ADDRESS.replace('x', '0')}/24 -o ' + WG_DEVICE + ' -j MASQUERADE`);
-    // await Util.exec('iptables -A INPUT -p udp -m udp --dport 51820 -j ACCEPT');
-    // await Util.exec('iptables -A FORWARD -i wg0 -j ACCEPT');
-    // await Util.exec('iptables -A FORWARD -o wg0 -j ACCEPT');
-    await this.__syncConfig();
-    this.#configCache = config;
-    return this.#configCache;
-  }
+const DEBUG = debug('WireGuard');
 
+class WireGuard {
   async saveConfig() {
-    const config = await this.getConfig();
-    await this.__saveConfig(config);
-    await this.__syncConfig();
+    await this.#saveWireguardConfig();
+    await this.#syncWireguardConfig();
   }
 
-  async __saveConfig(config: Config) {
+  async #saveWireguardConfig() {
+    const system = await Database.getSystem();
+    const clients = await Database.getClients();
     let result = `
 # Note: Do not edit this file directly.
 # Your changes will be overwritten!
 
 # Server
 [Interface]
-PrivateKey = ${config.server.privateKey}
-Address = ${config.server.address}/24
-ListenPort = ${WG_PORT}
-PreUp = ${WG_PRE_UP}
-PostUp = ${WG_POST_UP}
-PreDown = ${WG_PRE_DOWN}
-PostDown = ${WG_POST_DOWN}
+PrivateKey = ${system.interface.privateKey}
+Address = ${system.interface.address}/24
+ListenPort = ${system.wgPort}
+PreUp = ${system.iptables.PreUp}
+PostUp = ${system.iptables.PostUp}
+PreDown = ${system.iptables.PreDown}
+PostDown = ${system.iptables.PostDown}
 `;
 
-    for (const [clientId, client] of Object.entries(config.clients)) {
+    for (const [clientId, client] of Object.entries(clients)) {
       if (!client.enabled) continue;
 
       result += `
@@ -134,49 +46,39 @@ ${
 }AllowedIPs = ${client.address}/32`;
     }
 
-    debug('Config saving...');
-    await fs.writeFile(
-      path.join(WG_PATH, 'wg0.json'),
-      JSON.stringify(config, undefined, 2),
-      {
-        mode: 0o660,
-      }
-    );
-    await fs.writeFile(path.join(WG_PATH, 'wg0.conf'), result, {
+    DEBUG('Config saving...');
+    await fs.writeFile(path.join('/etc/wireguard', 'wg0.conf'), result, {
       mode: 0o600,
     });
-    debug('Config saved.');
+    DEBUG('Config saved.');
   }
 
-  async __syncConfig() {
-    debug('Config syncing...');
+  async #syncWireguardConfig() {
+    DEBUG('Config syncing...');
     await exec('wg syncconf wg0 <(wg-quick strip wg0)');
-    debug('Config synced.');
+    DEBUG('Config synced.');
   }
 
   async getClients() {
-    const config = await this.getConfig();
-    const clients = Object.entries(config.clients).map(
-      ([clientId, client]) => ({
-        id: clientId,
-        name: client.name,
-        enabled: client.enabled,
-        address: client.address,
-        publicKey: client.publicKey,
-        createdAt: new Date(client.createdAt),
-        updatedAt: new Date(client.updatedAt),
-        expireAt: client.expireAt !== null ? new Date(client.expireAt) : null,
-        allowedIPs: client.allowedIPs,
-        oneTimeLink: client.oneTimeLink ?? null,
-        oneTimeLinkExpiresAt: client.oneTimeLinkExpiresAt ?? null,
-        downloadableConfig: 'privateKey' in client,
-        persistentKeepalive: null as string | null,
-        latestHandshakeAt: null as Date | null,
-        endpoint: null as string | null,
-        transferRx: null as number | null,
-        transferTx: null as number | null,
-      })
-    );
+    const dbClients = await Database.getClients();
+    const clients = Object.entries(dbClients).map(([clientId, client]) => ({
+      id: clientId,
+      name: client.name,
+      enabled: client.enabled,
+      address: client.address,
+      publicKey: client.publicKey,
+      createdAt: new Date(client.createdAt),
+      updatedAt: new Date(client.updatedAt),
+      expiresAt: client.expiresAt,
+      allowedIPs: client.allowedIPs,
+      oneTimeLink: client.oneTimeLink,
+      downloadableConfig: 'privateKey' in client,
+      persistentKeepalive: null as string | null,
+      latestHandshakeAt: null as Date | null,
+      endpoint: null as string | null,
+      transferRx: null as number | null,
+      transferTx: null as number | null,
+    }));
 
     // Loop WireGuard status
     const dump = await exec('wg show wg0 dump', {
@@ -215,8 +117,7 @@ ${
   }
 
   async getClient({ clientId }: { clientId: string }) {
-    const config = await this.getConfig();
-    const client = config.clients[clientId];
+    const client = await Database.getClient(clientId);
     if (!client) {
       throw createError({
         statusCode: 404,
@@ -228,23 +129,22 @@ ${
   }
 
   async getClientConfiguration({ clientId }: { clientId: string }) {
-    const config = await this.getConfig();
+    const system = await Database.getSystem();
     const client = await this.getClient({ clientId });
 
     return `
 [Interface]
 PrivateKey = ${client.privateKey ? `${client.privateKey}` : 'REPLACE_ME'}
 Address = ${client.address}/24
-${WG_DEFAULT_DNS ? `DNS = ${WG_DEFAULT_DNS}\n` : ''}\
-${WG_MTU ? `MTU = ${WG_MTU}\n` : ''}\
+DNS = ${system.userConfig.defaultDns.join(',')}
+MTU = ${system.userConfig.mtu}
 
 [Peer]
-PublicKey = ${config.server.publicKey}
-${
-  client.preSharedKey ? `PresharedKey = ${client.preSharedKey}\n` : ''
-}AllowedIPs = ${WG_ALLOWED_IPS}
-PersistentKeepalive = ${WG_PERSISTENT_KEEPALIVE}
-Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
+PublicKey = ${system.interface.publicKey}
+PresharedKey = ${client.preSharedKey}
+AllowedIPs = ${client.allowedIPs}
+PersistentKeepalive = ${client.persistentKeepalive}
+Endpoint = ${system.wgHost}:${system.wgConfigPort}`;
   }
 
   async getClientQRCodeSVG({ clientId }: { clientId: string }) {
@@ -266,7 +166,8 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
       throw new Error('Missing: Name');
     }
 
-    const config = await this.getConfig();
+    const system = await Database.getSystem();
+    const clients = await Database.getClients();
 
     const privateKey = await exec('wg genkey');
     const publicKey = await exec(`echo ${privateKey} | wg pubkey`, {
@@ -274,15 +175,19 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
     });
     const preSharedKey = await exec('wg genpsk');
 
+    // TODO: cidr
     // Calculate next IP
     let address;
     for (let i = 2; i < 255; i++) {
-      const client = Object.values(config.clients).find((client) => {
-        return client.address === WG_DEFAULT_ADDRESS.replace('x', i.toString());
+      const client = Object.values(clients).find((client) => {
+        return (
+          client.address ===
+          system.userConfig.addressRange.replace('x', i.toString())
+        );
       });
 
       if (!client) {
-        address = WG_DEFAULT_ADDRESS.replace('x', i.toString());
+        address = system.userConfig.addressRange.replace('x', i.toString());
         break;
       }
     }
@@ -293,22 +198,20 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
 
     // Create Client
     const id = crypto.randomUUID();
-    const client: Client = {
+
+    const client: NewClient = {
       id,
       name,
       address,
       privateKey,
       publicKey,
       preSharedKey,
-
-      createdAt: new Date().toISOString(),
-      updatedAt: new Date().toISOString(),
-
       endpoint: null,
       oneTimeLink: null,
-      oneTimeLinkExpiresAt: null,
-      expireAt: null,
+      expiresAt: null,
       enabled: true,
+      allowedIPs: system.userConfig.allowedIps,
+      persistentKeepalive: system.userConfig.persistentKeepalive,
     };
 
     if (expireDate) {
@@ -316,10 +219,10 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
       date.setHours(23);
       date.setMinutes(59);
       date.setSeconds(59);
-      client.expireAt = date.toISOString();
+      client.expiresAt = date;
     }
 
-    config.clients[id] = client;
+    await Database.createClient(client);
 
     await this.saveConfig();
 
@@ -327,48 +230,34 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
   }
 
   async deleteClient({ clientId }: { clientId: string }) {
-    const config = await this.getConfig();
-
-    if (config.clients[clientId]) {
-      // eslint-disable-next-line @typescript-eslint/no-dynamic-delete
-      delete config.clients[clientId];
-      await this.saveConfig();
-    }
+    await Database.deleteClient(clientId);
+    await this.saveConfig();
   }
 
   async enableClient({ clientId }: { clientId: string }) {
-    const client = await this.getClient({ clientId });
-
-    client.enabled = true;
-    client.updatedAt = new Date().toISOString();
+    await Database.toggleClient(clientId, true);
 
     await this.saveConfig();
   }
 
   async generateOneTimeLink({ clientId }: { clientId: string }) {
-    const client = await this.getClient({ clientId });
     const key = `${clientId}-${Math.floor(Math.random() * 1000)}`;
-    client.oneTimeLink = Math.abs(CRC32.str(key)).toString(16);
-    client.oneTimeLinkExpiresAt = new Date(
-      Date.now() + 5 * 60 * 1000
-    ).toISOString();
-    client.updatedAt = new Date().toISOString();
+    const oneTimeLink = Math.abs(CRC32.str(key)).toString(16);
+    const expiresAt = new Date(Date.now() + 5 * 60 * 1000);
+    await Database.createOneTimeLink(clientId, {
+      oneTimeLink,
+      expiresAt,
+    });
     await this.saveConfig();
   }
 
   async eraseOneTimeLink({ clientId }: { clientId: string }) {
-    const client = await this.getClient({ clientId });
-    client.oneTimeLink = null;
-    client.oneTimeLinkExpiresAt = null;
-    client.updatedAt = new Date().toISOString();
+    await Database.deleteOneTimeLink(clientId);
     await this.saveConfig();
   }
 
   async disableClient({ clientId }: { clientId: string }) {
-    const client = await this.getClient({ clientId });
-
-    client.enabled = false;
-    client.updatedAt = new Date().toISOString();
+    await Database.toggleClient(clientId, false);
 
     await this.saveConfig();
   }
@@ -380,10 +269,7 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
     clientId: string;
     name: string;
   }) {
-    const client = await this.getClient({ clientId });
-
-    client.name = name;
-    client.updatedAt = new Date().toISOString();
+    await Database.updateClientName(clientId, name);
 
     await this.saveConfig();
   }
@@ -395,8 +281,6 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
     clientId: string;
     address: string;
   }) {
-    const client = await this.getClient({ clientId });
-
     if (!isValidIPv4(address)) {
       throw createError({
         statusCode: 400,
@@ -404,8 +288,7 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
       });
     }
 
-    client.address = address;
-    client.updatedAt = new Date().toISOString();
+    await Database.updateClientAddress(clientId, address);
 
     await this.saveConfig();
   }
@@ -417,42 +300,81 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
     clientId: string;
     expireDate: string | null;
   }) {
-    const client = await this.getClient({ clientId });
+    let updatedDate: Date | null = null;
 
     if (expireDate) {
       const date = new Date(expireDate);
       date.setHours(23);
       date.setMinutes(59);
       date.setSeconds(59);
-      client.expireAt = date.toISOString();
-    } else {
-      client.expireAt = null;
+      updatedDate = date;
     }
-    client.updatedAt = new Date().toISOString();
 
-    await this.saveConfig();
-  }
+    await Database.updateClientExpirationDate(clientId, updatedDate);
 
-  async __reloadConfig() {
-    await this.__buildConfig();
-    await this.__syncConfig();
+    await this.saveConfig();
   }
 
-  async restoreConfiguration(config: string) {
-    debug('Starting configuration restore process.');
+  // TODO: reimplement database restore
+  async restoreConfiguration(_config: string) {
+    /* DEBUG('Starting configuration restore process.');
     // TODO: sanitize config
     const _config = JSON.parse(config);
     await this.__saveConfig(_config);
     await this.__reloadConfig();
-    debug('Configuration restore process completed.');
+    DEBUG('Configuration restore process completed.'); */
   }
 
+  // TODO: reimplement database restore
   async backupConfiguration() {
-    debug('Starting configuration backup.');
+    /* DEBUG('Starting configuration backup.');
     const config = await this.getConfig();
     const backup = JSON.stringify(config, null, 2);
-    debug('Configuration backup completed.');
-    return backup;
+    DEBUG('Configuration backup completed.');
+    return backup; */
+  }
+
+  async Startup() {
+    // TODO: improve this
+    await new Promise((res) => {
+      function wait() {
+        if (Database.connected) {
+          return res(true);
+        }
+      }
+      setTimeout(wait, 1000);
+    });
+    DEBUG('Starting Wireguard');
+    await this.#saveWireguardConfig();
+    await exec('wg-quick down wg0').catch(() => {});
+    await exec('wg-quick up wg0').catch((err) => {
+      if (
+        err &&
+        err.message &&
+        err.message.includes('Cannot find device "wg0"')
+      ) {
+        throw new Error(
+          'WireGuard exited with the error: Cannot find device "wg0"\nThis usually means that your host\'s kernel does not support WireGuard!'
+        );
+      }
+
+      throw err;
+    });
+    await this.#syncWireguardConfig();
+    DEBUG('Wireguard started successfully');
+
+    DEBUG('Starting Cron Job');
+    await this.startCronJob();
+  }
+
+  async startCronJob() {
+    await this.cronJob().catch((err) => {
+      DEBUG('Running Cron Job failed.');
+      console.error(err);
+    });
+    setTimeout(() => {
+      this.startCronJob();
+    }, 60 * 1000);
   }
 
   // Shutdown wireguard
@@ -460,47 +382,31 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
     await exec('wg-quick down wg0').catch(() => {});
   }
 
-  async cronJobEveryMinute() {
-    const config = await this.getConfig();
+  async cronJob() {
+    const clients = await Database.getClients();
     const system = await Database.getSystem();
-    if (!system) {
-      throw new Error('Invalid Database');
-    }
-    let needSaveConfig = false;
     // Expires Feature
     if (system.clientExpiration.enabled) {
-      for (const client of Object.values(config.clients)) {
+      for (const client of Object.values(clients)) {
         if (client.enabled !== true) continue;
-        if (
-          client.expireAt !== null &&
-          new Date() > new Date(client.expireAt)
-        ) {
-          debug(`Client ${client.id} expired.`);
-          needSaveConfig = true;
-          client.enabled = false;
-          client.updatedAt = new Date().toISOString();
+        if (client.expiresAt !== null && new Date() > client.expiresAt) {
+          DEBUG(`Client ${client.id} expired.`);
+          await Database.toggleClient(client.id, false);
         }
       }
     }
     // One Time Link Feature
     if (system.oneTimeLinks.enabled) {
-      for (const client of Object.values(config.clients)) {
+      for (const client of Object.values(clients)) {
         if (
           client.oneTimeLink !== null &&
-          client.oneTimeLinkExpiresAt !== null &&
-          new Date() > new Date(client.oneTimeLinkExpiresAt)
+          new Date() > client.oneTimeLink.expiresAt
         ) {
-          debug(`Client ${client.id} One Time Link expired.`);
-          needSaveConfig = true;
-          client.oneTimeLink = null;
-          client.oneTimeLinkExpiresAt = null;
-          client.updatedAt = new Date().toISOString();
+          DEBUG(`Client ${client.id} One Time Link expired.`);
+          await Database.deleteOneTimeLink(client.id);
         }
       }
     }
-    if (needSaveConfig) {
-      await this.saveConfig();
-    }
   }
 
   async getMetrics() {
@@ -578,15 +484,9 @@ Endpoint = ${WG_HOST}:${WG_CONFIG_PORT}`;
 }
 
 const inst = new WireGuard();
-
-// This also has to also start the WireGuard Server
-async function cronJobEveryMinute() {
-  await inst.cronJobEveryMinute().catch((err) => {
-    debug('Running Cron Job failed.');
-    console.error(err);
-  });
-  setTimeout(cronJobEveryMinute, 60 * 1000);
-}
-cronJobEveryMinute();
+inst.Startup().catch((v) => {
+  console.error(v);
+  process.exit(1);
+});
 
 export default inst;
diff --git a/src/server/utils/config.ts b/src/server/utils/config.ts
deleted file mode 100644
index 6f74f162..00000000
--- a/src/server/utils/config.ts
+++ /dev/null
@@ -1,69 +0,0 @@
-import type { SessionConfig } from 'h3';
-
-import debug from 'debug';
-
-export const MAX_AGE = process.env.MAX_AGE
-  ? parseInt(process.env.MAX_AGE, 10) * 60
-  : 0;
-export const WG_PATH = process.env.WG_PATH || '/etc/wireguard/';
-export const WG_DEVICE = process.env.WG_DEVICE || 'eth0';
-export const WG_HOST = process.env.WG_HOST;
-export const WG_PORT = process.env.WG_PORT || '51820';
-export const WG_CONFIG_PORT =
-  process.env.WG_CONFIG_PORT || process.env.WG_PORT || '51820';
-export const WG_MTU = process.env.WG_MTU || null;
-export const WG_PERSISTENT_KEEPALIVE =
-  process.env.WG_PERSISTENT_KEEPALIVE || '0';
-export const WG_DEFAULT_ADDRESS = process.env.WG_DEFAULT_ADDRESS || '10.8.0.x';
-export const WG_DEFAULT_DNS =
-  typeof process.env.WG_DEFAULT_DNS === 'string'
-    ? process.env.WG_DEFAULT_DNS
-    : '1.1.1.1';
-export const WG_ALLOWED_IPS = process.env.WG_ALLOWED_IPS || '0.0.0.0/0, ::/0';
-
-export const WG_PRE_UP = process.env.WG_PRE_UP || '';
-export const WG_POST_UP =
-  process.env.WG_POST_UP ||
-  `
-iptables -t nat -A POSTROUTING -s ${WG_DEFAULT_ADDRESS.replace('x', '0')}/24 -o ${WG_DEVICE} -j MASQUERADE;
-iptables -A INPUT -p udp -m udp --dport ${WG_PORT} -j ACCEPT;
-iptables -A FORWARD -i wg0 -j ACCEPT;
-iptables -A FORWARD -o wg0 -j ACCEPT;
-`
-    .split('\n')
-    .join(' ');
-
-export const WG_PRE_DOWN = process.env.WG_PRE_DOWN || '';
-export const WG_POST_DOWN =
-  process.env.WG_POST_DOWN ||
-  `
-iptables -t nat -D POSTROUTING -s ${WG_DEFAULT_ADDRESS.replace('x', '0')}/24 -o ${WG_DEVICE} -j MASQUERADE;
-iptables -D INPUT -p udp -m udp --dport ${WG_PORT} -j ACCEPT;
-iptables -D FORWARD -i wg0 -j ACCEPT;
-iptables -D FORWARD -o wg0 -j ACCEPT;
-`
-    .split('\n')
-    .join(' ');
-export const LANG = process.env.LANG || 'en';
-export const UI_TRAFFIC_STATS = process.env.UI_TRAFFIC_STATS || 'false';
-export const UI_CHART_TYPE = process.env.UI_CHART_TYPE || '0';
-export const WG_ENABLE_ONE_TIME_LINKS =
-  process.env.WG_ENABLE_ONE_TIME_LINKS || 'false';
-export const UI_ENABLE_SORT_CLIENTS =
-  process.env.UI_ENABLE_SORT_CLIENTS || 'false';
-export const WG_ENABLE_EXPIRES_TIME =
-  process.env.WG_ENABLE_EXPIRES_TIME || 'false';
-export const ENABLE_PROMETHEUS_METRICS =
-  process.env.ENABLE_PROMETHEUS_METRICS || 'false';
-export const PROMETHEUS_METRICS_PASSWORD =
-  process.env.PROMETHEUS_METRICS_PASSWORD;
-
-export const REQUIRES_PROMETHEUS_PASSWORD = !!PROMETHEUS_METRICS_PASSWORD;
-
-export const SESSION_CONFIG = {
-  password: getRandomHex(256),
-  name: 'wg-easy',
-  cookie: undefined,
-} satisfies SessionConfig;
-
-export const SERVER_DEBUG = debug('Server');
diff --git a/src/server/utils/logger.ts b/src/server/utils/logger.ts
new file mode 100644
index 00000000..0bc77549
--- /dev/null
+++ b/src/server/utils/logger.ts
@@ -0,0 +1,3 @@
+import debug from 'debug';
+
+export const SERVER_DEBUG = debug('Server');
diff --git a/src/server/utils/types.ts b/src/server/utils/types.ts
index 1b09c115..c0f54988 100644
--- a/src/server/utils/types.ts
+++ b/src/server/utils/types.ts
@@ -42,6 +42,11 @@ const expireDate = z
   .pipe(safeStringRefine)
   .nullable();
 
+const oneTimeLink = z
+  .string({ message: 'oneTimeLink must be a valid string' })
+  .min(1, 'oneTimeLink must be at least 1 Character')
+  .pipe(safeStringRefine);
+
 export const clientIdType = z.object(
   {
     clientId: id,
@@ -70,6 +75,13 @@ export const expireDateType = z.object(
   { message: 'Body must be a valid object' }
 );
 
+export const oneTimeLinkType = z.object(
+  {
+    oneTimeLink: oneTimeLink,
+  },
+  { message: 'Body must be a valid object' }
+);
+
 export const createType = z.object(
   {
     name: name,
diff --git a/src/services/database/lowdb.ts b/src/services/database/lowdb.ts
index 7ed7fbbb..a9c9ffd5 100644
--- a/src/services/database/lowdb.ts
+++ b/src/services/database/lowdb.ts
@@ -13,16 +13,17 @@ import type { Low } from 'lowdb';
 import type { User } from './repositories/user';
 import type { Database } from './repositories/database';
 import { migrationRunner } from './migrations';
+import type { Client, NewClient, OneTimeLink } from './repositories/client';
 
 const DEBUG = debug('LowDB');
 
 export default class LowDB extends DatabaseProvider {
   #db!: Low<Database>;
+  #connected = false;
 
   // is this really needed?
   private async __init() {
-    // TODO: assume path to db file
-    const dbFilePath = join(WG_PATH, 'db.json');
+    const dbFilePath = join('/etc/wireguard', 'db.json');
     this.#db = await JSONFilePreset(dbFilePath, DEFAULT_DATABASE);
   }
 
@@ -30,6 +31,9 @@ export default class LowDB extends DatabaseProvider {
    * @throws
    */
   async connect() {
+    if (this.#connected) {
+      return;
+    }
     try {
       await this.__init();
       DEBUG('Running Migrations');
@@ -39,11 +43,16 @@ export default class LowDB extends DatabaseProvider {
       DEBUG(e);
       throw new DatabaseError(DatabaseError.ERROR_INIT);
     }
-
+    this.#connected = true;
     DEBUG('Connected successfully');
   }
 
+  get connected() {
+    return this.#connected;
+  }
+
   async disconnect() {
+    this.#connected = false;
     DEBUG('Disconnected successfully');
   }
 
@@ -57,6 +66,7 @@ export default class LowDB extends DatabaseProvider {
     return system;
   }
 
+  // TODO: return copy to avoid mutation (everywhere)
   async getUsers() {
     return this.#db.data.users;
   }
@@ -78,6 +88,7 @@ export default class LowDB extends DatabaseProvider {
       throw new DatabaseError(DatabaseError.ERROR_PASSWORD_REQ);
     }
 
+    // TODO: multiple names are no problem
     const isUserExist = this.#db.data.users.find(
       (user) => user.username === username
     );
@@ -98,15 +109,16 @@ export default class LowDB extends DatabaseProvider {
       updatedAt: now,
     };
 
-    this.#db.update((data) => data.users.push(newUser));
+    await this.#db.update((data) => data.users.push(newUser));
   }
 
   async updateUser(user: User) {
+    // TODO: avoid mutation, prefer .update, updatedAt
     let oldUser = await this.getUser(user.id);
     if (oldUser) {
       DEBUG('Update User');
       oldUser = user;
-      this.#db.write();
+      await this.#db.write();
     }
   }
 
@@ -114,7 +126,89 @@ export default class LowDB extends DatabaseProvider {
     DEBUG('Delete User');
     const idx = this.#db.data.users.findIndex((user) => user.id === id);
     if (idx !== -1) {
-      this.#db.update((data) => data.users.splice(idx, 1));
+      await this.#db.update((data) => data.users.splice(idx, 1));
     }
   }
+
+  async getClients() {
+    DEBUG('GET Clients');
+    return this.#db.data.clients;
+  }
+
+  async getClient(id: string) {
+    DEBUG('Get Client');
+    return this.#db.data.clients[id];
+  }
+
+  async createClient(client: NewClient) {
+    DEBUG('Create Client');
+    const now = new Date();
+    const newClient: Client = { ...client, createdAt: now, updatedAt: now };
+    await this.#db.update((data) => {
+      data.clients[client.id] = newClient;
+    });
+  }
+
+  async deleteClient(id: string) {
+    DEBUG('Delete Client');
+    await this.#db.update((data) => {
+      // TODO: find something better than delete
+      // eslint-disable-next-line @typescript-eslint/no-dynamic-delete
+      delete data.clients[id];
+    });
+  }
+
+  async toggleClient(id: string, enable: boolean) {
+    DEBUG('Toggle Client');
+    await this.#db.update((data) => {
+      if (data.clients[id]) {
+        data.clients[id].enabled = enable;
+      }
+    });
+  }
+
+  async updateClientName(id: string, name: string) {
+    DEBUG('Update Client Name');
+    await this.#db.update((data) => {
+      if (data.clients[id]) {
+        data.clients[id].name = name;
+      }
+    });
+  }
+
+  async updateClientAddress(id: string, address: string) {
+    DEBUG('Update Client Address');
+    await this.#db.update((data) => {
+      if (data.clients[id]) {
+        data.clients[id].address = address;
+      }
+    });
+  }
+
+  async updateClientExpirationDate(id: string, expirationDate: Date | null) {
+    DEBUG('Update Client Address');
+    await this.#db.update((data) => {
+      if (data.clients[id]) {
+        data.clients[id].expiresAt = expirationDate;
+      }
+    });
+  }
+
+  async deleteOneTimeLink(id: string) {
+    DEBUG('Update Client Address');
+    await this.#db.update((data) => {
+      if (data.clients[id]) {
+        data.clients[id].oneTimeLink = null;
+      }
+    });
+  }
+
+  async createOneTimeLink(id: string, oneTimeLink: OneTimeLink) {
+    DEBUG('Update Client Address');
+    await this.#db.update((data) => {
+      if (data.clients[id]) {
+        data.clients[id].oneTimeLink = oneTimeLink;
+      }
+    });
+  }
 }
diff --git a/src/services/database/migrations/1.ts b/src/services/database/migrations/1.ts
index 7da1a511..e36300cc 100644
--- a/src/services/database/migrations/1.ts
+++ b/src/services/database/migrations/1.ts
@@ -3,61 +3,43 @@ import type { Database } from '../repositories/database';
 import packageJson from '@@/package.json';
 import { ChartType } from '../repositories/system';
 
-// TODO: use variables inside up/down script
-const DEFAULT_ADDRESS = '10.8.0.x';
-const DEFAULT_DEVICE = 'eth0';
-const DEFAULT_WG_PORT = 51820;
-const DEFAULT_POST_UP = `
-iptables -t nat -A POSTROUTING -s ${DEFAULT_ADDRESS.replace('x', '0')}/24 -o ${DEFAULT_DEVICE} -j MASQUERADE;
-iptables -A INPUT -p udp -m udp --dport ${DEFAULT_WG_PORT} -j ACCEPT;
-iptables -A FORWARD -i wg0 -j ACCEPT;
-iptables -A FORWARD -o wg0 -j ACCEPT;
-`
-  .split('\n')
-  .join(' ');
-const DEFAULT_POST_DOWN = `
-iptables -t nat -D POSTROUTING -s ${DEFAULT_ADDRESS.replace('x', '0')}/24 -o ${DEFAULT_DEVICE} -j MASQUERADE;
-iptables -D INPUT -p udp -m udp --dport ${DEFAULT_WG_PORT} -j ACCEPT;
-iptables -D FORWARD -i wg0 -j ACCEPT;
-iptables -D FORWARD -o wg0 -j ACCEPT;
-`
-  .split('\n')
-  .join(' ');
-
 export async function run1(db: Low<Database>) {
   const privateKey = await exec('wg genkey');
   const publicKey = await exec(`echo ${privateKey} | wg pubkey`, {
     log: 'echo ***hidden*** | wg pubkey',
   });
+  const addressRange = '10.8.0.x';
   const database: Database = {
     migrations: [],
     system: {
+      // TODO: move to var, no need for database
       release: packageJson.release.version,
       interface: {
         privateKey: privateKey,
         publicKey: publicKey,
-        address: DEFAULT_ADDRESS.replace('x', '1'),
+        address: addressRange.replace('x', '1'),
       },
       sessionTimeout: 3600, // 1 hour
       lang: 'en',
       userConfig: {
         mtu: 1420,
         persistentKeepalive: 0,
-        // TODO: assume handle CIDR to compute next ip in WireGuard
-        rangeAddress: '10.8.0.0/24',
+        // TODO: handle CIDR to compute next ip in WireGuard
+        //addressRange: '10.8.0.0/24',
+        addressRange: addressRange,
         defaultDns: ['1.1.1.1'],
         allowedIps: ['0.0.0.0/0', '::/0'],
       },
-      wgPath: WG_PATH,
-      wgDevice: DEFAULT_DEVICE,
-      wgHost: WG_HOST || '',
-      wgPort: DEFAULT_WG_PORT,
+      wgDevice: 'wg0',
+      // TODO: wgHost has to be configured when onboarding
+      wgHost: '',
+      wgPort: 51820,
       wgConfigPort: 51820,
       iptables: {
         PreUp: '',
-        PostUp: DEFAULT_POST_UP,
+        PostUp: '',
         PreDown: '',
-        PostDown: DEFAULT_POST_DOWN,
+        PostDown: '',
       },
       trafficStats: {
         enabled: false,
@@ -79,12 +61,32 @@ export async function run1(db: Low<Database>) {
       sessionConfig: {
         password: getRandomHex(256),
         name: 'wg-easy',
-        cookie: undefined,
+        cookie: {},
       },
+      cookieMaxAge: 24 * 60,
     },
     users: [],
+    clients: {},
   };
 
+  // TODO: use variables inside up/down script
+  database.system.iptables.PostUp = `
+iptables -t nat -A POSTROUTING -s ${database.system.userConfig.addressRange.replace('x', '0')}/24 -o ${database.system.wgDevice} -j MASQUERADE;
+iptables -A INPUT -p udp -m udp --dport ${database.system.wgPort} -j ACCEPT;
+iptables -A FORWARD -i wg0 -j ACCEPT;
+iptables -A FORWARD -o wg0 -j ACCEPT;
+`
+    .split('\n')
+    .join(' ');
+  database.system.iptables.PostDown = `
+iptables -t nat -D POSTROUTING -s ${database.system.userConfig.addressRange.replace('x', '0')}/24 -o ${database.system.wgDevice} -j MASQUERADE;
+iptables -D INPUT -p udp -m udp --dport ${database.system.wgPort} -j ACCEPT;
+iptables -D FORWARD -i wg0 -j ACCEPT;
+iptables -D FORWARD -o wg0 -j ACCEPT;
+`
+    .split('\n')
+    .join(' ');
+
   db.data = database;
   db.write();
 }
diff --git a/src/services/database/repositories/client.ts b/src/services/database/repositories/client.ts
new file mode 100644
index 00000000..a84faa72
--- /dev/null
+++ b/src/services/database/repositories/client.ts
@@ -0,0 +1,43 @@
+export type OneTimeLink = {
+  oneTimeLink: string;
+  expiresAt: Date;
+};
+
+export type Client = {
+  id: string;
+  name: string;
+  address: string;
+  privateKey: string;
+  publicKey: string;
+  preSharedKey: string;
+  expiresAt: Date | null;
+  endpoint: string | null;
+  allowedIPs: string[];
+  oneTimeLink: OneTimeLink | null;
+  createdAt: Date;
+  updatedAt: Date;
+  enabled: boolean;
+  persistentKeepalive: number;
+};
+
+export type NewClient = Omit<Client, 'createdAt' | 'updatedAt'>;
+
+/**
+ * Interface for client-related database operations.
+ * This interface provides methods for managing client data.
+ */
+export interface ClientRepository {
+  getClients(): Promise<Record<string, Client>>;
+  getClient(id: string): Promise<Client | undefined>;
+  createClient(client: NewClient): Promise<void>;
+  deleteClient(id: string): Promise<void>;
+  toggleClient(id: string, enable: boolean): Promise<void>;
+  updateClientName(id: string, name: string): Promise<void>;
+  updateClientAddress(id: string, address: string): Promise<void>;
+  updateClientExpirationDate(
+    id: string,
+    expirationDate: Date | null
+  ): Promise<void>;
+  deleteOneTimeLink(id: string): Promise<void>;
+  createOneTimeLink(id: string, oneTimeLink: OneTimeLink): Promise<void>;
+}
diff --git a/src/services/database/repositories/database.ts b/src/services/database/repositories/database.ts
index ce1c6505..1e7ca39c 100644
--- a/src/services/database/repositories/database.ts
+++ b/src/services/database/repositories/database.ts
@@ -1,3 +1,9 @@
+import type {
+  ClientRepository,
+  Client,
+  NewClient,
+  OneTimeLink,
+} from './client';
 import type { System, SystemRepository } from './system';
 import type { User, UserRepository } from './user';
 
@@ -6,12 +12,14 @@ export type Database = {
   migrations: string[];
   system: System;
   users: User[];
+  clients: Record<string, Client>;
 };
 
 export const DEFAULT_DATABASE: Database = {
   migrations: [],
   system: null as never,
   users: [],
+  clients: {},
 };
 
 /**
@@ -22,7 +30,7 @@ export const DEFAULT_DATABASE: Database = {
  *
  */
 export abstract class DatabaseProvider
-  implements SystemRepository, UserRepository
+  implements SystemRepository, UserRepository, ClientRepository
 {
   /**
    * Connects to the database.
@@ -44,6 +52,23 @@ export abstract class DatabaseProvider
   ): Promise<void>;
   abstract updateUser(user: User): Promise<void>;
   abstract deleteUser(id: string): Promise<void>;
+
+  abstract getClients(): Promise<Record<string, Client>>;
+  abstract getClient(id: string): Promise<Client | undefined>;
+  abstract createClient(client: NewClient): Promise<void>;
+  abstract deleteClient(id: string): Promise<void>;
+  abstract toggleClient(id: string, enable: boolean): Promise<void>;
+  abstract updateClientName(id: string, name: string): Promise<void>;
+  abstract updateClientAddress(id: string, address: string): Promise<void>;
+  abstract updateClientExpirationDate(
+    id: string,
+    expirationDate: Date | null
+  ): Promise<void>;
+  abstract deleteOneTimeLink(id: string): Promise<void>;
+  abstract createOneTimeLink(
+    id: string,
+    oneTimeLink: OneTimeLink
+  ): Promise<void>;
 }
 
 /**
diff --git a/src/services/database/repositories/system.ts b/src/services/database/repositories/system.ts
index 06538600..6ba9cfac 100644
--- a/src/services/database/repositories/system.ts
+++ b/src/services/database/repositories/system.ts
@@ -18,7 +18,7 @@ export type WGInterface = {
 export type WGConfig = {
   mtu: number;
   persistentKeepalive: number;
-  rangeAddress: string;
+  addressRange: string;
   defaultDns: string[];
   allowedIps: string[];
 };
@@ -57,7 +57,6 @@ export type System = {
 
   userConfig: WGConfig;
 
-  wgPath: string;
   wgDevice: string;
   wgHost: string;
   wgPort: number;
@@ -72,6 +71,7 @@ export type System = {
 
   prometheus: Prometheus;
   sessionConfig: SessionConfig;
+  cookieMaxAge: number;
 };
 
 /**