diff --git a/modules/labs_common_variables/outputs.tf b/modules/labs_common_variables/outputs.tf
index 9fe8e91..c1595ca 100644
--- a/modules/labs_common_variables/outputs.tf
+++ b/modules/labs_common_variables/outputs.tf
@@ -87,3 +87,4 @@ output "flavor_list" {
 output "default_security_group_name" {
   value = var.default_security_group_name
 }
+
diff --git a/modules/labs_private_net_and_dns_zone/main_network_dns_zone.tf b/modules/labs_private_net_and_dns_zone/main_network_dns_zone.tf
index 7380fc4..b21450e 100644
--- a/modules/labs_private_net_and_dns_zone/main_network_dns_zone.tf
+++ b/modules/labs_private_net_and_dns_zone/main_network_dns_zone.tf
@@ -13,10 +13,10 @@ resource "openstack_networking_network_v2" "main-private-network" {
   external       = "false"
   description = var.main_private_network.description
   dns_domain = var.dns_zone.zone_name
-  mtu            = module.common_variables.mtu_size
+  mtu            = module.labs_common_variables.mtu_size
   port_security_enabled = true
   shared = false
-  region = module.common_variables.main_region
+  region = module.labs_common_variables.main_region
   tenant_id = var.os_project_data.id
 }
 
@@ -26,7 +26,7 @@ resource "openstack_networking_subnet_v2" "main-private-subnet" {
   network_id      = openstack_networking_network_v2.main-private-network.id
   cidr            = var.main_private_subnet.cidr
   gateway_ip      = var.main_private_subnet.gateway_ip
-  dns_nameservers = module.common_variables.resolvers_ip
+  dns_nameservers = module.labs_common_variables.resolvers_ip
   ip_version = 4
   enable_dhcp = true
   tenant_id = var.os_project_data.id
@@ -37,9 +37,9 @@ resource "openstack_networking_subnet_v2" "main-private-subnet" {
 }
 
 resource "openstack_networking_router_v2" "external-router" {
-  name                = module.common_variables.external_router.name
+  name                = var.external_router.name
   description = var.external_router.description
-  external_network_id = module.common_variables.external_network.id
+  external_network_id = module.labs_common_variables.external_network.id
   tenant_id = var.os_project_data.id
   enable_snat = true
    vendor_options {
@@ -57,7 +57,7 @@ resource "openstack_networking_router_interface_v2" "private-network-routing" {
 #
 # This is the security group that should be added to every instance
 resource "openstack_networking_secgroup_v2" "default" {
-  name                 = var.default_security_group_name
+  name                 = module.labs_common_variables.default_security_group_name
   delete_default_rules = "true"
   description          = "Default security group with rules that allow ssh access from the ISTI networks, http, https"
 }
diff --git a/modules/labs_private_net_and_dns_zone/terraform-provider.tf b/modules/labs_private_net_and_dns_zone/terraform-provider.tf
index c597bdd..5f67cf4 100644
--- a/modules/labs_private_net_and_dns_zone/terraform-provider.tf
+++ b/modules/labs_private_net_and_dns_zone/terraform-provider.tf
@@ -15,7 +15,7 @@ module "ssh_settings" {
 }
 
 # Module used
-module "common_variables" {
-  source = "../../modules/common_variables"
+module "labs_common_variables" {
+  source = "../../modules/labs_common_variables"
 }
 
diff --git a/modules/labs_private_net_and_dns_zone/variables_main_network_dns.tf b/modules/labs_private_net_and_dns_zone/variables_main_network_dns.tf
index 4165713..12278a2 100644
--- a/modules/labs_private_net_and_dns_zone/variables_main_network_dns.tf
+++ b/modules/labs_private_net_and_dns_zone/variables_main_network_dns.tf
@@ -54,9 +54,9 @@ variable "default_firewall_rules_map" {
   default = {
     "ssh_from_isti_net" = {
       description = "SSH from the ISTI network"
-      source      = module.labs_common_variables.ssh_sources.isti_net_cidr
+      source      = "146.48.80.0/21"
       port_min    = 22
       port_max    = 22
     }
   }
-}
\ No newline at end of file
+}