Protocol Port Source Destination Description
TCP 80 Load Balancer / Reverse Proxy HTTP traffic to Rancher UI / API.
TCP 443 Load Balancer / Reverse Proxy

Otherwise IPs of all cluster nodes and other Rancher API / UI clients.
HTTPS traffic to Rancher UI / API.
TCP 443 35.160.43.145
35.167.242.46
52.33.59.17
Rancher catalog (git.rancher.io).
TCP 22 Any node created using node driver. SSH provisioning of node by node driver.
TCP 2376 Any node created using node driver. Docker daemon TLS port used by node driver.
TCP Provider Dependent Port of the Kubernetes API endpoint in hosted clusters. Kubernetes API.