diff --git a/group_vars/all.yaml.example b/group_vars/all.yaml.example
index 9359e90..d752485 100644
--- a/group_vars/all.yaml.example
+++ b/group_vars/all.yaml.example
@@ -1,37 +1,48 @@
 ---
-# Put here the public ip for your organisation
 public_ip: 0.0.0.0
-# Put here the domain for your organisation
 domain: "example.com"
-# Put here an email address to receive Let's Encrypt communications.
+organization: 'ExampleOrg'
 letsencrypt_email: 'admin@example.com'
 
-# Put the TLS X.509 Subject Prefix (before OU=)
-x509_subject_prefix: '/C=IT/L=Firenze/O=Example'
-# Here the same in LDAP (and reversed) format
-x509_ldap_suffix: 'o=Example,l=Firenze,c=it'
+# Put the TLS X.509 Subject Prefix elements (before OU)
+x509_subj_prefix:
+  C: 'IT'
+  #ST: ''
+  L: 'Firenze'
+  O: '{{ organization }}'
 
 # Put here the public key of the user CAs.
 # The first one will be used also to check if host certificate are
 # updated.
-user_ca_keys:
-  - "ssh-ed25519 AAAA(...) Active Production key"
+ssh_user_ca:
+  - "ssh-ed25519 AAAA(...) SSH User CA - Active Production key"
   - "ssh-ed25519 AAAA(...) Older not-expired key"
 #  - "ssh-ed25519 AAAA(...) Revoked key"
 
+ssh_server_ca: "ssh-ed25519 AAAA(...) SSH Server CA - Active Production key"
+
+monitoring_host: 'status'
+
+# Do not change -> probably will soon be moved elsewhere
+openssl_x509_prefix: >-
+  {% for k, v in x509_subj_prefix.items() %}/{{k}}={{v}}{% endfor %}
+
 # Put TLS Certificate of your Root Certification Authority
 tls_root_ca: |
   -----BEGIN CERTIFICATE-----
   #########################
   -----END CERTIFICATE-----
 # Put TLS Certificate for OpenVPN Server Intermediate CA
-tls_vpn_user_ca: |
+tls_intermediate_server_ca: |
   -----BEGIN CERTIFICATE-----
   #########################
   -----END CERTIFICATE-----
 # Put TLS Certificate for OpenVPN Users Intermediate CA
-tls_vpn_server_ca: |
+tls_intermediate_user_ca: |
   -----BEGIN CERTIFICATE-----
   ##########################
   -----END CERTIFICATE-----
 
+# Optionals customization
+#openvpn_tls_server_ca: '{{ tls_intermediate_server_ca }}'
+#openvpn_tls_user_ca: '{{ tls_intermediate_server_ca }}'
diff --git a/roles/openvpn/defaults/main.yaml b/roles/openvpn/defaults/main.yaml
index 9c49d19..83aa9b6 100644
--- a/roles/openvpn/defaults/main.yaml
+++ b/roles/openvpn/defaults/main.yaml
@@ -1,3 +1,5 @@
 ---
-server_fqdn: '{{ inventory_hostname }}.{{ domain }}'
+host_fqdn: '{{ inventory_hostname }}.dmz.{{ domain }}'
+openvpn_tls_server_ca: '{{ tls_intermediate_server_ca }}'
+openvpn_tls_user_ca: '{{ tls_intermediate_user_ca }}'
 ...
diff --git a/roles/openvpn/tasks/main.yaml b/roles/openvpn/tasks/main.yaml
index 092175b..3b91740 100644
--- a/roles/openvpn/tasks/main.yaml
+++ b/roles/openvpn/tasks/main.yaml
@@ -28,14 +28,14 @@
 
 - name: 'upload server ca'
   copy:
-    content: '{{ tls_vpn_server_ca }}{{ tls_root_ca }}'
+    content: '{{ openvpn_tls_server_ca }}{{ tls_root_ca }}'
     dest: '/etc/openvpn/server_ca.crt'
   tags:
     - 'tls_int'
 
 - name: 'upload user ca'
   copy:
-    content: '{{ tls_vpn_user_ca }}{{ tls_root_ca }}'
+    content: '{{ openvpn_tls_user_ca }}{{ tls_root_ca }}'
     dest: '/etc/openvpn/user_ca.crt'
   notify: 'reload openvpn'
   tags:
@@ -56,7 +56,7 @@
   shell: >
     openssl req
     -new
-    -subj "{{ x509_subject_prefix }}/OU=Server/CN={{ server_fqdn }}"
+    -subj "{{ openssl_x509_prefix }}/OU=Server/CN={{ host_fqdn }}"
     -key /etc/openvpn/openvpn.key
     -out /etc/openvpn/openvpn.csr
   when: openvpn_cert_is_valid.rc != 0
@@ -65,7 +65,7 @@
 
 - import_tasks: 'ca-signing-request.yaml'
   vars:
-    host: '{{ server_fqdn }}'
+    host: '{{ host_fqdn }}'
     request_path: '/etc/openvpn/openvpn.csr'
     output_path: '/etc/openvpn/openvpn.crt'
   when: openvpn_cert_is_valid.rc != 0
diff --git a/roles/ssh_server/templates/user_ca.pub.j2 b/roles/ssh_server/templates/user_ca.pub.j2
index 01175e7..fe55c72 100644
--- a/roles/ssh_server/templates/user_ca.pub.j2
+++ b/roles/ssh_server/templates/user_ca.pub.j2
@@ -1,4 +1,4 @@
-{% for key in user_ca_keys %}
+{% for key in ssh_user_ca %}
 {{ key }}
 {% endfor %}