diff --git a/Centos7-Dockerfile b/Centos7-Dockerfile
index dfbd115..d566e41 100644
--- a/Centos7-Dockerfile
+++ b/Centos7-Dockerfile
@@ -1,2 +1,3 @@
 FROM docker.io/pycontribs/centos:7
-RUN yum install -y iproute
\ No newline at end of file
+RUN yum install -y iproute firewalld python-firewall net-tools && \
+    systemctl enable firewalld
diff --git a/Centos8-Dockerfile b/Centos8-Dockerfile
new file mode 100644
index 0000000..1cc77c5
--- /dev/null
+++ b/Centos8-Dockerfile
@@ -0,0 +1,6 @@
+# Centos8-Dockerfile
+FROM docker.io/pycontribs/centos:8
+RUN yum install -y iproute firewalld net-tools && \
+    systemctl disable nftables && \
+    systemctl enable firewalld && \
+    
diff --git a/handlers/main.yml b/handlers/main.yml
index c06eae5..6ad9bc6 100644
--- a/handlers/main.yml
+++ b/handlers/main.yml
@@ -8,4 +8,15 @@
 
 - name: cmk fresh install
   set_fact:
-    cmk_fresh_install: True
\ No newline at end of file
+    cmk_fresh_install: True
+
+- name: ensure firewall open
+  firewalld:
+    port: 6556/tcp
+    state: enabled
+    permanent: yes
+    immediate: yes
+
+- name: ensure firewall reloaded
+  command: firewall-cmd --reload
+  changed_when: false
diff --git a/tasks/RedHat.yml b/tasks/RedHat.yml
index 7cc2742..f6a4cb5 100644
--- a/tasks/RedHat.yml
+++ b/tasks/RedHat.yml
@@ -24,6 +24,8 @@
       notify:
         - restart xinetd
         - cmk fresh install
+        - ensure firewall open
+        - ensure firewall reloaded
 
     - name: Remove agent Download
       file: