diff --git a/server/web/Flask_server.py b/server/web/Flask_server.py
index c902570..b2c4efe 100755
--- a/server/web/Flask_server.py
+++ b/server/web/Flask_server.py
@@ -60,6 +60,13 @@ def is_valid_ip(ip):
     except ValueError:
         return False
 
+def is_valid_network(ip_network):
+    try:
+        ipaddress.ip_network(ip_network)
+        return True
+    except ValueError:
+        return False
+
 # server_management input handler
 def get_server_management_input_handler_value(value):
     if value is not None:
@@ -303,6 +310,7 @@ def unblacklist_uuid():
 def blacklist_ip():
     ip = request.args.get('ip')
     user = request.args.get('redirect')
+
     if is_valid_ip(ip):
         res = redis_server_metadata.sadd('blacklist_ip', ip)
         if user:
@@ -310,6 +318,14 @@ def blacklist_ip():
                 return redirect(url_for('server_management', blacklisted_ip=2))
             else:
                 return redirect(url_for('server_management', blacklisted_ip=1))
+    elif is_valid_network(ip):
+        for addr in ipaddress.ip_network(ip):
+            res = redis_server_metadata.sadd('blacklist_ip', str(addr))
+        if user:
+            if res==0:
+                return redirect(url_for('server_management', blacklisted_ip=2))
+            else:
+                return redirect(url_for('server_management', blacklisted_ip=1))
     else:
         if user:
             return redirect(url_for('server_management', blacklisted_ip=0))
@@ -326,6 +342,14 @@ def unblacklist_ip():
                 return redirect(url_for('server_management', unblacklisted_ip=2))
             else:
                 return redirect(url_for('server_management', unblacklisted_ip=1))
+    elif is_valid_network(ip):
+        for addr in ipaddress.ip_network(ip):
+            res = redis_server_metadata.srem('blacklist_ip', str(addr))
+        if user:
+            if res==0:
+                return redirect(url_for('server_management', unblacklisted_ip=2))
+            else:
+                return redirect(url_for('server_management', unblacklisted_ip=1))
     else:
         if user:
             return redirect(url_for('server_management', unblacklisted_ip=0))
diff --git a/server/web/static/img/cef.png b/server/web/static/img/cef.png
index 9d29cf7..a4a8e4f 100644
Binary files a/server/web/static/img/cef.png and b/server/web/static/img/cef.png differ
diff --git a/server/web/templates/index.html b/server/web/templates/index.html
index 31a2049..b628433 100644
--- a/server/web/templates/index.html
+++ b/server/web/templates/index.html
@@ -6,6 +6,7 @@
 	<link rel="icon" href="{{ url_for('static', filename='img/d4-logo.png')}}">
 	<!-- Core CSS -->
 	<link href="{{ url_for('static', filename='css/bootstrap.min.css') }}" rel="stylesheet">
+	<link href="{{ url_for('static', filename='font-awesome/css/font-awesome.css') }}" rel="stylesheet">
 
 	<!-- JS -->
 	<script src="{{ url_for('static', filename='js/bootstrap.min.js')}}"></script>
@@ -56,13 +57,13 @@
 	    <li class="nav-item active">
 	      <a class="nav-link mr-3" href="{{ url_for('index') }}">Home <span class="sr-only">(current)</span></a>
 	    </li>
-	      <li class="nav-item" mr-3>
-	        <a class="nav-link mr-3" href="{{ url_for('sensors_status') }}">Sensors Status</a>
-	      </li>
-	      <li class="nav-item mr-3">
-	        <a class="nav-link" href="{{ url_for('server_management') }}" tabindex="-1" aria-disabled="true">Server Management</a>
-	      </li>
-	    </ul>
+	    <li class="nav-item" mr-3>
+	      <a class="nav-link mr-3" href="{{ url_for('sensors_status') }}">Sensors Status</a>
+	    </li>
+      <li class="nav-item mr-3">
+	      <a class="nav-link" href="{{ url_for('server_management') }}" tabindex="-1" aria-disabled="true">Server Management</a>
+	    </li>
+	  </ul>
 	</nav>
 
 
@@ -94,17 +95,15 @@
 				</div>
 			</div>
 		</div>
-		<div class="d-flex justify-content-center mt-4">
-			<img src="{{ url_for('static', filename='img/circl.png')}}" alt="circl" class="h-75 mt-4">
-			<img src="{{ url_for('static', filename='img/cef.png')}}" alt="cef">
-		</div>
+
 		<div class="d-flex justify-content-center">
 			<a href="{{ url_for('delete_data') }}">
-				<button type="button" class="btn btn-primary mt-3">Delete All Data (Demo)</button>
+				<button type="button" class="btn btn-primary mt-3 mb-2">Delete All Data (Demo)</button>
 			</a>
 		</div>
 
 
+	{% include 'navfooter.html' %}
 </body>
 
 <script>
diff --git a/server/web/templates/navfooter.html b/server/web/templates/navfooter.html
new file mode 100644
index 0000000..bae6ef5
--- /dev/null
+++ b/server/web/templates/navfooter.html
@@ -0,0 +1,19 @@
+  <hr/ class="mb-0">
+	<nav class="navbar bottom navbar-expand-sm navbar-light bg-light">
+		<a class="navbar-brand" href="https://www.circl.lu/">
+	    <img src="{{ url_for('static', filename='img/circl.png')}}" alt="circl" class="h-100" style="width: 180px;">
+	  </a>
+	  <img src="{{ url_for('static', filename='img/cef.png')}}" alt="cef" class="h-100" style="width: 500px;">
+		<ul class="navbar-nav ml-auto">
+	    <li class="nav-item">
+				<a class="navbar-brand" href="https://www.d4-project.org/">
+		      <img src="{{ url_for('static', filename='img/d4-logo.png')}}" alt="D4 Project" style="width:70px;">
+		    </a>
+	    </li>
+	    <li class="nav-item">
+				<a class="navbar-brand" href="https://github.com/D4-project/d4-core">
+		      <i class="fa fa-github fa-3x mt-1"></i>
+		    </a>
+	    </li>
+	  </ul>
+	</nav>
diff --git a/server/web/templates/sensors_status.html b/server/web/templates/sensors_status.html
index fa405ea..03e676c 100644
--- a/server/web/templates/sensors_status.html
+++ b/server/web/templates/sensors_status.html
@@ -114,9 +114,5 @@
 		</div>
 	{% endfor %}
 
-	<script>
-		var res = $('#show_active_connection').val();
-		console.log(res)
-	</script>
-
+	{% include 'navfooter.html' %}
 </body>
diff --git a/server/web/templates/server_management.html b/server/web/templates/server_management.html
index d468328..6ed5c37 100644
--- a/server/web/templates/server_management.html
+++ b/server/web/templates/server_management.html
@@ -6,6 +6,7 @@
 	<link rel="icon" href="{{ url_for('static', filename='img/d4-logo.png')}}">
 	<!-- Core CSS -->
 	<link href="{{ url_for('static', filename='css/bootstrap.min.css') }}" rel="stylesheet">
+	<link href="{{ url_for('static', filename='font-awesome/css/font-awesome.css') }}" rel="stylesheet">
 	<link href="{{ url_for('static', filename='css/dataTables.bootstrap.min.css') }}" rel="stylesheet">
 
 	<!-- JS -->
@@ -39,7 +40,7 @@
 	    </ul>
 	</nav>
 
-	<div class="card-deck justify-content-center">
+	<div class="card-deck justify-content-center ml-0 mr-0">
 		<div class="card text-center mt-3 ml-4">
 			<div class="card-header bg-danger text-white">
 				Blacklist IP
@@ -145,7 +146,7 @@
 		</div>
 	</div>
 
-	<div class="card-deck justify-content-center">
+	<div class="card-deck justify-content-center ml-0 mr-0">
 		<div class="card border-dark mt-3 ml-4 mr-4">
 			<div class="card-header bg-dark text-white">
 				Header Accepted Types
@@ -193,6 +194,7 @@
 
 	</div>
 
+	{% include 'navfooter.html' %}
 </body>
 
 <script>
diff --git a/server/web/templates/uuid_management.html b/server/web/templates/uuid_management.html
index 28bd42c..3e783fc 100644
--- a/server/web/templates/uuid_management.html
+++ b/server/web/templates/uuid_management.html
@@ -157,6 +157,7 @@
 		</div>
 	</div>
 
+	{% include 'navfooter.html' %}
 </body>
 
 <script>