diff --git a/Setting-up-a-Hub.md b/Setting-up-a-Hub.md
index d9eb218..35da64b 100644
--- a/Setting-up-a-Hub.md
+++ b/Setting-up-a-Hub.md
@@ -133,7 +133,7 @@ open the following ports in your firewall
 - `22` for ssh
 - `9246` for lbcd
 - `50001` for herald
-- `2113` and `2113` for prometheus monitoring
+- `2113` and `2113` for prometheus (if you want external monitoring)
 
 ## Monitoring