diff --git a/tasks/configure_iptables_externalusers.yml b/tasks/configure_iptables_externalusers.yml
index f979f95cca3042b64b65c31d02a8325f7f1f851f..b107c285945a8dffe4bd9e6465b5578c995125ca 100644
--- a/tasks/configure_iptables_externalusers.yml
+++ b/tasks/configure_iptables_externalusers.yml
@@ -1,7 +1,7 @@
 ---
 - name: iptables-Regeln setzen (ZIH der TU Dresden)
   ansible.builtin.iptables:
-    action: insert
+    action: append
     chain: INPUT
     comment: "{{ item.comment }}"
     destination: "{{ item.dest | default(omit) }}"