diff --git a/tasks/main.yml b/tasks/main.yml
index 3759bea..4275a1b 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -15,8 +15,9 @@
   iptables:
     action: append
     chain: INPUT
-    protocol: tcp
+    protocol: "tcp"
     destination_port: "{{ destination_port }}"
+    source: "! {{ private_address }}"
     in_interface: eth0
     policy: DROP
-    state: absent
\ No newline at end of file
+    state: present
\ No newline at end of file