added ufw

modules/firewall.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+echo
+echo "  => Firewall"
+echo
+
+dpkg -l ufw > /dev/null 2>&1
+if [ $? -ne 0 ]; then
+    apt-get install ufw -y
+    ufw enable
+fi