dead link fix

content/rancher/v2.x/en/installation/references/_index.md

@@ -0,0 +1,9 @@
+---
+title: Port Requirements
+aliases:
+  - /rancher/v2.x/en/hosts/amazon/#required-ports-for-rancher-to-work
+---
+
+To operate properly, Rancher requires the following ports to be open on your nodes. During creation of clusters using a cloud service (like Amazon EC2 or DigitalOcean), Rancher opens these ports for you.
+
+{{< requirements_ports >}}