diff --git a/code/config.json b/code/config.json
deleted file mode 100644
index c1f207f..0000000
--- a/code/config.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-    "ports": {
-        "radius_authentication": 1812,
-        "radius_accounting": 1813 
-    },
-    "client_secret": "password",
-    "storage": "json:./data.json",
-    "default_vlan_enabled": true,
-    "default_vlan_id": 90,
-    "mac_auth_only": true
-}
diff --git a/code/data.json b/code/data.json
index ef0372d..095a1ee 100644
--- a/code/data.json
+++ b/code/data.json
@@ -9,11 +9,6 @@
       "username": "AB:CD:EF:12:34:56",
       "password": "AB:CD:EF:12:34:56",
       "vlan": "123"
-    },
-    {
-      "username": "abcdef123456",
-      "password": "abcdef123456",
-      "vlan": "123"
     }
   ]
 }
\ No newline at end of file
diff --git a/code/lib/data.js b/code/lib/data.js
index 0c55441..e995e8f 100644
--- a/code/lib/data.js
+++ b/code/lib/data.js
@@ -1,4 +1,5 @@
 const fs = require ('fs');
+const timeauth = require ('./time.js');
 
 try {
     var data = JSON.parse (fs.readFileSync ('./data.json').toString ());
@@ -19,7 +20,9 @@ const persistData = () => {
         content.users.push ({
             username: user,
             password: users[user].password,
-            vlan: users[user].vlan
+            vlan: users[user].vlan,
+            description: users[user].description,
+            rules: users[user].rules
         });
     });
     fs.writeFileSync ('./data.json', JSON.stringify (content, null, 2));
@@ -29,7 +32,9 @@ users = {};
 data.users.forEach ((e) => {
     users[e.username] = {
         password: e.password,
-        vlan: e.vlan
+        vlan: e.vlan,
+        description: e.description,
+        rules: e.rules
     }
 });
 
@@ -40,9 +45,16 @@ module.exports = {
             password = password.toLowerCase ().replace (/[:-]/g, '');
         }
         if (users[username] && users[username].password == password) {
-            return { 
-                vlan: users[username].vlan 
-            };
+            // Check time
+            var rules = users[username].rules || [];
+            if (timeauth.checkAuth (rules)) {
+                return { 
+                    vlan: users[username].vlan 
+                };
+            }
+            else {
+                return false;
+            }
         }
         else {
             return false;
@@ -59,11 +71,13 @@ module.exports = {
                 password = password.toLowerCase ().replace (/[:-]/g, '');
             }
             var description = payload.description || "";
+            var rules = payload.rules || [];
             var vlan = payload.vlan;
             users[username] = {
                 password: password,
                 vlan: vlan,
-                description: description
+                description: description,
+                rules: rules
             };
             persistData ();
             callback ("OK\n\n", null);
diff --git a/code/lib/time.js b/code/lib/time.js
new file mode 100644
index 0000000..7ba7d13
--- /dev/null
+++ b/code/lib/time.js
@@ -0,0 +1,80 @@
+const rangeStringToArray = (str) => {
+    // Split the string by hyphen
+    const parts = str.split ("-");
+    // Validate input format (two numbers separated by hyphen)
+    if (parts.length !== 2 || isNaN (parts[0]) || isNaN (parts[1])) {
+        return null; // Return null for invalid format
+    }
+    // Convert strings to numbers
+    const start = parseInt (parts[0], 10);
+    const end = parseInt (parts[1], 10);
+    // Check if start is less than or equal to end (inclusive range)
+    if (start > end) {
+        return null; // Return null for invalid range
+    }
+    // Use Array.from() to create an array with sequence
+    return Array.from ({ length: end - start + 1 }, (_, i) => start + i);
+};
+
+const resolveRange = (str) => {
+    const numberSets = str.split (","); // Split by commas
+    const numbers = [];
+    for (const set of numberSets) {
+        // Check if it's a range
+        if (set.includes ("-")) {
+            const range = rangeStringToArray (set); // Use the previous function
+            if (range) {
+                numbers.push(...range); // Spread operator to add elements from range array
+            }
+            else {
+                const num = parseInt(set, 10);
+                // Check if conversion is successful (valid number)
+                if (!isNaN(num)) {
+                    numbers.push(num);
+                }
+            }
+        }
+    }
+    return numbers;
+}
+
+module.exports = {
+    checkAuth: (rules = []) => {
+        var authorised = false;
+        if (rules.length > 0) {
+            var now = new Date ();
+            var minuteOfDay = (now.getHours () * 60) + now.getMinutes (); // 0 - 1439
+            var day = now.getDay (); // 1 - 7
+            var date = now.getDate (); // 1 - 31
+            var month = now.getMonth () + 1; // 1 - 12
+            var actions = [];
+            rules.forEach ((rule) => {
+                var valid = false;
+                // Process rule
+                var r = {
+                    startMinute: parseInt (rule.startTime.split (":")[0] * 60) + parseInt (rule.startTime.split (":")[1]),
+                    endMinute: parseInt (rule.endTime.split (":")[0] * 60) + parseInt (rule.endTime.split (":")[1]),
+                    days: resolveRange (rule.weekdays),
+                    dates: resolveRange (rule.dates),
+                    months: resolveRange (rule.months)
+                }
+                if (
+                    minuteOfDay >= r.startMinute && 
+                    minuteOfDay <= r.endMinute &&
+                    r.days.indexOf (day) !== -1 &&
+                    r.dates.indexOf (date) !== -1 &&
+                    r.months.indexOf (month) !== -1
+                ) {
+                    actions.push (rule.action.toLowerCase ());
+                }
+            });
+            if (actions.indexOf ("allow")) {
+                authorised = true;
+            }
+            if (actions.indexOf ("deny")) {
+                authorised = false;
+            }
+        }
+        return authorised;
+    }
+}
\ No newline at end of file