diff --git a/variables.tf b/variables.tf
index acd2ef9..42ec972 100644
--- a/variables.tf
+++ b/variables.tf
@@ -20,6 +20,21 @@ variable "namespace" {
   default     = "istio-system"
 }
 
+variable "extra_listener_ports" {
+  description = "A list of additional ports that the ingress load balancer should listen to, 9094 for kafka as an example."
+  type = list(object({
+    name = string
+    port = string
+  }))
+  default = []
+}
+
+variable "tags" {
+  description = "Tags to be added to the load balancer in AWS."
+  type        = map(string)
+  default     = {}
+}
+
 # helm repo add istio https://istio-release.storage.googleapis.com/charts
 # helm search repo istio/istiod
 variable "istio_chart_version" {