diff --git a/garr/shib2common/manifests/definitions/updatesecurity.pp b/garr/shib2common/manifests/definitions/updatesecurity.pp
new file mode 100644
index 0000000000000000000000000000000000000000..681c43f286e285026f1cd00a745688a32c56fb5d
--- /dev/null
+++ b/garr/shib2common/manifests/definitions/updatesecurity.pp
@@ -0,0 +1,43 @@
+# == Class: shib2common::updatesecurity
+#
+# This configures unattended upgrades to perform security updated automatically.
+# Parameters:
+# +disable_reboot+:: This parameter permits to specify if all packages requiring a reboot must
+#                    be excluded from security updates.
+#
+# Actions:
+#
+# Requires:
+#
+# Sample Usage:
+# This class file is not called directly.
+#
+define shib2common::updatesecurity(
+  $disable_reboot          = true,
+) {
+
+  package { 'unattended-upgrades':
+     ensure => 'present',
+  }
+  
+  if ($::disable_reboot) {
+    file { '/etc/apt/apt.conf.d/50unattended-upgrades':
+      ensure  => present,
+      owner   => 'root',
+      group   => 'root',
+      mode    => '0644',
+      content => template("shib2common/50unattended-upgrades.erb"),
+      require => Package['unattended-upgrades'],
+    }
+  }
+  
+  file { '/usr/share/unattended-upgrades/20auto-upgrades-disabled':
+    ensure  => present,
+    owner   => 'root',
+    group   => 'root',
+    mode    => '0644',
+    content => join(['APT::Periodic::Update-Package-Lists "1";',
+                     'APT::Periodic::Unattended-Upgrade "1";'], "\n"),
+    require => Package['unattended-upgrades'],
+  }
+}
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diff --git a/garr/shib2common/templates/50unattended-upgrades.erb b/garr/shib2common/templates/50unattended-upgrades.erb
new file mode 100644
index 0000000000000000000000000000000000000000..47a77499d3691fdf39a2598c7c411d3595f75120
--- /dev/null
+++ b/garr/shib2common/templates/50unattended-upgrades.erb
@@ -0,0 +1,59 @@
+// Automatically upgrade packages from these (origin:archive) pairs
+Unattended-Upgrade::Allowed-Origins {
+        "${distro_id}:${distro_codename}-security";
+//      "${distro_id}:${distro_codename}-updates";
+//      "${distro_id}:${distro_codename}-proposed";
+//      "${distro_id}:${distro_codename}-backports";
+};
+
+// List of packages to not update
+Unattended-Upgrade::Package-Blacklist {
+//      "vim";
+//      "libc6";
+//      "libc6-dev";
+//      "libc6-i686";
+<% if @disable_reboot==true -%>
+        "linux-*";
+        "grub-*";
+<% end -%>
+};
+
+// This option allows you to control if on a unclean dpkg exit
+// unattended-upgrades will automatically run
+//   dpkg --force-confold --configure -a
+// The default is true, to ensure updates keep getting installed
+//Unattended-Upgrade::AutoFixInterruptedDpkg "false";
+
+// Split the upgrade into the smallest possible chunks so that
+// they can be interrupted with SIGUSR1. This makes the upgrade
+// a bit slower but it has the benefit that shutdown while a upgrade
+// is running is possible (with a small delay)
+//Unattended-Upgrade::MinimalSteps "true";
+
+// Install all unattended-upgrades when the machine is shuting down
+// instead of doing it in the background while the machine is running
+// This will (obviously) make shutdown slower
+//Unattended-Upgrade::InstallOnShutdown "true";
+
+// Send email to this address for problems or packages upgrades
+// If empty or unset then no email is sent, make sure that you
+// have a working mail setup on your system. A package that provides
+// 'mailx' must be installed.
+//Unattended-Upgrade::Mail "root@localhost";
+
+// Set this value to "true" to get emails only on errors. Default
+// is to always send a mail if Unattended-Upgrade::Mail is set
+//Unattended-Upgrade::MailOnlyOnError "true";
+
+// Do automatic removal of new unused dependencies after the upgrade
+// (equivalent to apt-get autoremove)
+//Unattended-Upgrade::Remove-Unused-Dependencies "false";
+
+// Automatically reboot *WITHOUT CONFIRMATION* if a
+// the file /var/run/reboot-required is found after the upgrade
+Unattended-Upgrade::Automatic-Reboot "false";
+
+
+// Use apt bandwidth limit feature, this example limits the download
+// speed to 70kb/sec
+//Acquire::http::Dl-Limit "70";
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