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Endpoints have a binding, which dictates how traffic can access it.

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Public Endpoints

Endpoints with a public binding have a publicly addressable URL that receives traffic from the internet via the ngrok cloud service’s global points of presence. for example, These endpoints might use an ngrok subdomain or a custom domain. Example URLs:
  • https://example.ngrok.app
  • https://blog.example.com.
Learn more about Public Endpoints.

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Internal Endpoints

Endpoints with an internal binding can only receive traffic forwarded to them from other Endpoints in your ngrok account via the forward-internal Traffic Policy action. Internal endpoints have URLs that end in .internal. Example URLs:
  • https://example.internal
  • tcp://ssh.internal:22
Learn more about Internal Endpoints.

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Kubernetes Endpoints

Endpoints with a kubernetes binding are private endpoints that are only available inside of Kubernetes clusters where you installed the ngrok Kubernetes Operator. Example URLs:
  • http://service.namespace
  • tcp://db.controlplane:5432
Learn more about Kubernetes Endpoints.